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Liang Z, Shen D, Wei Y, Sun F, Xie Y, Wang L, Fu H. Modulating the Electronic Structure of Cobalt-Vanadium Bimetal Catalysts for High-Stable Anion Exchange Membrane Water Electrolyzer. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2408634. [PMID: 39148167 DOI: 10.1002/adma.202408634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2024] [Revised: 07/21/2024] [Indexed: 08/17/2024]
Abstract
Modulating the electronic structure of catalysts to effectively couple the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is essential for developing high-efficiency anion exchange membrane water electrolyzer (AEMWE). Herein, a coral-like nanoarray composed of nanosheets through the synergistic layering effect of cobalt and the 1D guiding of vanadium is synthesized, which promotes extensive contact between the active sites and electrolyte. The HER and OER activities can be enhanced by modulating the electronic structure through nitridation and phosphorization, respectively, enhancing the strength of metal-H bond to optimize hydrogen adsorption and facilitating the proton transfer to improve the transformation of oxygen-containing intermediates. Resultantly, the AEMWE achieves a current density of 500 mA cm-2 at 1.76 V for 1000 h in 1.0 M KOH at 70 °C. The energy consumption is 4.21 kWh Nm-3 with the producing hydrogen cost of $0.93 per kg H2. Operando synchrotron radiation and Bode phase angle analyses reveal that during the high-energy consumed OER, the dissolution of vanadium species transforms distorted Co-O octahedral into regular octahedral structures, accompanied by a shortening of the Co-Co bond length. This structural evolution facilitates the formation of oxygen intermediates, thus accelerating the reaction kinetics.
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Affiliation(s)
- Zhijian Liang
- Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin, 150080, China
| | - Di Shen
- Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin, 150080, China
| | - Yao Wei
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201204, China
- Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201204, China
| | - Fanfei Sun
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201204, China
- Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201204, China
| | - Ying Xie
- Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin, 150080, China
| | - Lei Wang
- Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin, 150080, China
| | - Honggang Fu
- Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin, 150080, China
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2
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Chen L, Yu C, Song X, Dong J, Han Y, Huang H, Zhu X, Xie Y, Qiu J. Microscopic-Level Insights into P-O-Induced Strong Electronic Coupling Over Nickel Phosphide with Efficient Benzyl Alcohol Electrooxidation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2306410. [PMID: 38456764 DOI: 10.1002/smll.202306410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 11/04/2023] [Indexed: 03/09/2024]
Abstract
Electrooxidation of biomass into fine chemicals coupled with energy-saving hydrogen production for a zero-carbon economy holds great promise. Advanced anode catalysts determine the cell voltage and electrocatalytic efficiency greatly, further the rational design and optimization of their active site coordination remains a challenge. Herein, a phosphorus-oxygen terminals-rich species (Ni2P-O-300) via an anion-assisted pyrolysis strategy is reported to induce strong electronic coupling and high valence state of active nickel sites over nickel phosphide. This ultimately facilitates the rapid yet in-situ formation of high-valence nickel with a high reaction activity under electrochemical conditions, and exhibits a low potential of 1.33 V vs. RHE at 10 mA cm-2, exceeding most of reported transition metal-based catalysts. Advanced spectroscopy, theoretical calculations, and experiments reveal that the functional P-O species can induce the favorable local bonding configurations for electronic coupling, promoting the electron transfer from Ni to P and the adsorption of benzyl alcohol (BA). Finally, the hydrogen production efficiency and kinetic constant of BA electrooxidation by Ni2P-O-300 are increased by 9- and 2.8- fold compared with the phosphorus-oxygen terminals-deficient catalysts (Ni2P-O-500). This provides an anion-assisted pyrolysis strategy to modulate the electronic environment of the Ni site, enabling a guideline for Ni-based energy/catalysis systems.
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Affiliation(s)
- Lin Chen
- State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Chang Yu
- State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Xuedan Song
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
| | - Junting Dong
- State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Yingnan Han
- State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Hongling Huang
- State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Xiuqing Zhu
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
| | - Yuanyang Xie
- State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Jieshan Qiu
- State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
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3
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Yang S, Liu X, Li S, Yuan W, Yang L, Wang T, Zheng H, Cao R, Zhang W. The mechanism of water oxidation using transition metal-based heterogeneous electrocatalysts. Chem Soc Rev 2024; 53:5593-5625. [PMID: 38646825 DOI: 10.1039/d3cs01031g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/23/2024]
Abstract
The water oxidation reaction, a crucial process for solar energy conversion, has garnered significant research attention. Achieving efficient energy conversion requires the development of cost-effective and durable water oxidation catalysts. To design effective catalysts, it is essential to have a fundamental understanding of the reaction mechanisms. This review presents a comprehensive overview of recent advancements in the understanding of the mechanisms of water oxidation using transition metal-based heterogeneous electrocatalysts, including Mn, Fe, Co, Ni, and Cu-based catalysts. It highlights the catalytic mechanisms of different transition metals and emphasizes the importance of monitoring of key intermediates to explore the reaction pathway. In addition, advanced techniques for physical characterization of water oxidation intermediates are also introduced, for the purpose of providing information for establishing reliable methodologies in water oxidation research. The study of transition metal-based water oxidation electrocatalysts is instrumental in providing novel insights into understanding both natural and artificial energy conversion processes.
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Affiliation(s)
- Shujiao Yang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China.
| | - Xiaohan Liu
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China.
| | - Sisi Li
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China.
| | - Wenjie Yuan
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China.
| | - Luna Yang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China.
| | - Ting Wang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China.
| | - Haoquan Zheng
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China.
| | - Rui Cao
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China.
| | - Wei Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China.
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Kayış Z, Akyüz D. A high-performance electrocatalyst via graphitic carbon nitride nanosheet-decorated bimetallic phosphide for alkaline water electrolysis. Phys Chem Chem Phys 2024; 26:14908-14918. [PMID: 38738576 DOI: 10.1039/d4cp00020j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2024]
Abstract
Developing renewable and clean energy systems for overall water electrolysis requires low-cost, highly efficient, and stable catalysts. With this motivation, nickel cobalt phosphorus (NiCoP) was electrodeposited onto nickel foam (NF) and then modified with graphitic carbon nitride (g-C3N4). The designed g-C3N4/NiCoP/NF electrode was used for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in alkaline water electrolysis. It exhibited a small overpotential of 80 mV@10 mA cm-2 with a Tafel slope of 89 mV dec-1 for the HER. It also exhibited an overpotential of 370 mV@10 mA cm-2 with a Tafel slope of 64 mV dec-1 for the OER. The g-C3N4/NiCoP catalyst exhibited satisfactory stability in an alkaline electrolyzer system, in which g-C3N4/NiCoP/NF was used as the anode and cathode. Meanwhile, the electrocatalyst requires only a cell voltage of 1.70 V to achieve 10 mA cm-2 current density for overall water electrolysis.
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Affiliation(s)
- Zehra Kayış
- Department of Chemistry, Faculty of Science, Gebze Technical University, Kocaeli, Turkey.
| | - Duygu Akyüz
- Department of Chemistry, Faculty of Science, Gebze Technical University, Kocaeli, Turkey.
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Zhao L, Zhong Y, Cao C, Tang T, Shao Z. Enhanced High-Temperature Cycling Stability of Garnet-Based All Solid-State Lithium Battery Using a Multi-Functional Catholyte Buffer Layer. NANO-MICRO LETTERS 2024; 16:124. [PMID: 38372899 PMCID: PMC10876510 DOI: 10.1007/s40820-024-01358-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Accepted: 01/03/2024] [Indexed: 02/20/2024]
Abstract
The pursuit of safer and high-performance lithium-ion batteries (LIBs) has triggered extensive research activities on solid-state batteries, while challenges related to the unstable electrode-electrolyte interface hinder their practical implementation. Polymer has been used extensively to improve the cathode-electrolyte interface in garnet-based all-solid-state LIBs (ASSLBs), while it introduces new concerns about thermal stability. In this study, we propose the incorporation of a multi-functional flame-retardant triphenyl phosphate additive into poly(ethylene oxide), acting as a thin buffer layer between LiNi0.8Co0.1Mn0.1O2 (NCM811) cathode and garnet electrolyte. Through electrochemical stability tests, cycling performance evaluations, interfacial thermal stability analysis and flammability tests, improved thermal stability (capacity retention of 98.5% after 100 cycles at 60 °C, and 89.6% after 50 cycles at 80 °C) and safety characteristics (safe and stable cycling up to 100 °C) are demonstrated. Based on various materials characterizations, the mechanism for the improved thermal stability of the interface is proposed. The results highlight the potential of multi-functional flame-retardant additives to address the challenges associated with the electrode-electrolyte interface in ASSLBs at high temperature. Efficient thermal modification in ASSLBs operating at elevated temperatures is also essential for enabling large-scale energy storage with safety being the primary concern.
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Affiliation(s)
- Leqi Zhao
- WA School of Mines: Minerals, Energy and Chemical Engineering, Curtin University, Perth, WA, 6102, Australia
| | - Yijun Zhong
- WA School of Mines: Minerals, Energy and Chemical Engineering, Curtin University, Perth, WA, 6102, Australia
| | - Chencheng Cao
- WA School of Mines: Minerals, Energy and Chemical Engineering, Curtin University, Perth, WA, 6102, Australia
| | - Tony Tang
- WA School of Mines: Minerals, Energy and Chemical Engineering, Curtin University, Perth, WA, 6102, Australia
| | - Zongping Shao
- WA School of Mines: Minerals, Energy and Chemical Engineering, Curtin University, Perth, WA, 6102, Australia.
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Liu S, Tan H, Huang YC, Zhang Q, Lin H, Li L, Hu Z, Huang WH, Pao CW, Lee JF, Kong Q, Shao Q, Xu Y, Huang X. Structurally-Distorted RuIr-Based Nanoframes for Long-Duration Oxygen Evolution Catalysis. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2305659. [PMID: 37620729 DOI: 10.1002/adma.202305659] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 07/26/2023] [Indexed: 08/26/2023]
Abstract
Oxygen evolution reaction (OER) plays a key role in proton exchange membrane water electrolysis (PEMWE), yet the electrocatalysts still suffer from the disadvantages of low activity and poor stability in acidic conditions. Here, a new class of CdRu2 IrOx nanoframes with distorted structure for acidic OER is successfully fabricated. Impressively, CdRu2 IrOx displays an ultralow overpotential of 189 mV and an ultralong stability of 1500 h at 10 mA cm⁻2 toward OER in 0.5 M H2 SO4 . Moreover, a PEMWE using the distorted CdRu2 IrOx can be steadily operated at 0.1 A cm⁻2 for 90 h. Microstructural analyses and X-ray absorption spectroscopy (XAS) demonstrate that the synergy between Ru and Ir in CdRu2 IrOx induces the distortion of Ru-O, Ir-O, and Ru-M (M = Ru, Ir) bonds. In situ XAS indicates that the applied potential leads to the deformation octahedral structure of RuOx /IrOx and the formation of stable Ru5+ species for OER. Theoretical calculations also reveal that the distorted structures can reduce the energy barrier of rate-limiting step during OER. This work provides an efficient strategy for constructing structural distortion to achieve significant enhancement on the activity and stability of OER catalysts.
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Affiliation(s)
- Shangheng Liu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Huang Tan
- Guangzhou Key Laboratory of Low-Dimensional Materials and Energy Storage Devices, Collaborative Innovation Center of Advanced Energy Materials, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, China
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an, 710119, China
| | - Yu-Cheng Huang
- Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu, 30010, Taiwan
| | - Qiaobao Zhang
- Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen, 361005, China
| | - Haiping Lin
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an, 710119, China
| | - Ling Li
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Jiangsu, 215123, China
| | - Zhiwei Hu
- Max Planck Institute for Chemical Physics of Solids, Nothnitzer Strasse 40, 01187, Dresden, Germany
| | - Wei-Hsiang Huang
- National Synchrotron Radiation Research Center, 101 Hsin-Ann Road, Hsinchu, 30076, Taiwan
| | - Chih-Wen Pao
- National Synchrotron Radiation Research Center, 101 Hsin-Ann Road, Hsinchu, 30076, Taiwan
| | - Jyh-Fu Lee
- National Synchrotron Radiation Research Center, 101 Hsin-Ann Road, Hsinchu, 30076, Taiwan
| | - Qingyu Kong
- Synchrotron Soleil, L'Orme des Merisiers, St-Aubin, Gif-sur-Yvette Cedex, 91192, France
| | - Qi Shao
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Jiangsu, 215123, China
| | - Yong Xu
- Guangzhou Key Laboratory of Low-Dimensional Materials and Energy Storage Devices, Collaborative Innovation Center of Advanced Energy Materials, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, China
| | - Xiaoqing Huang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
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Patil SS, Patil PS. 3D Bode analysis of nickel pyrophosphate electrode: A key to understanding the charge storage dynamics. Electrochim Acta 2023. [DOI: 10.1016/j.electacta.2023.142278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
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8
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Guo B, Ding Y, Huo H, Wen X, Ren X, Xu P, Li S. Recent Advances of Transition Metal Basic Salts for Electrocatalytic Oxygen Evolution Reaction and Overall Water Electrolysis. NANO-MICRO LETTERS 2023; 15:57. [PMID: 36862225 PMCID: PMC9981861 DOI: 10.1007/s40820-023-01038-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Accepted: 02/12/2023] [Indexed: 05/19/2023]
Abstract
Electrocatalytic oxygen evolution reaction (OER) has been recognized as the bottleneck of overall water splitting, which is a promising approach for sustainable production of H2. Transition metal (TM) hydroxides are the most conventional and classical non-noble metal-based electrocatalysts for OER, while TM basic salts [M2+(OH)2-x(Am-)x/m, A = CO32-, NO3-, F-, Cl-] consisting of OH- and another anion have drawn extensive research interest due to its higher catalytic activity in the past decade. In this review, we summarize the recent advances of TM basic salts and their application in OER and further overall water splitting. We categorize TM basic salt-based OER pre-catalysts into four types (CO32-, NO3-, F-, Cl-) according to the anion, which is a key factor for their outstanding performance towards OER. We highlight experimental and theoretical methods for understanding the structure evolution during OER and the effect of anion on catalytic performance. To develop bifunctional TM basic salts as catalyst for the practical electrolysis application, we also review the present strategies for enhancing its hydrogen evolution reaction activity and thereby improving its overall water splitting performance. Finally, we conclude this review with a summary and perspective about the remaining challenges and future opportunities of TM basic salts as catalysts for water electrolysis.
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Affiliation(s)
- Bingrong Guo
- Institute of Industrial Catalysis, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, 710049, People's Republic of China
| | - Yani Ding
- Institute of Industrial Catalysis, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, 710049, People's Republic of China
- Institute of Carbon Neutral Energy Technology, School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, 150001, People's Republic of China
| | - Haohao Huo
- Institute of Industrial Catalysis, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, 710049, People's Republic of China
| | - Xinxin Wen
- Institute of Industrial Catalysis, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, 710049, People's Republic of China
| | - Xiaoqian Ren
- Institute of Industrial Catalysis, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, 710049, People's Republic of China
| | - Ping Xu
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, People's Republic of China.
| | - Siwei Li
- Institute of Industrial Catalysis, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, 710049, People's Republic of China.
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Wen X, Zhou G, Liu J. Cobalt Pyrophosphate Nanosheets Effectively Boost Photoelectrochemical Water Splitting Efficiency of BiVO4 Photoanodes. Catal Letters 2023. [DOI: 10.1007/s10562-023-04293-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
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10
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Yang PZ, Wang X, Zhang LJ, Tong N, Wang XL. Electrochemically Reconstructed Vanadic Oxide-Doped Cobalt Pyrophosphate as an Electrocatalyst for the Oxygen Evolution Reaction. Inorg Chem 2023; 62:2317-2325. [PMID: 36696163 DOI: 10.1021/acs.inorgchem.2c04064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
More and more attention has been paid to the development of the efficient electrocatalysts for the oxygen evolution reaction (OER). Herein, a porous vanadic oxide-doped cobalt pyrophosphate electrocatalyst, namely V2O5-Co2P2O7, was exploited by using the electrochemical reconstruction method in the alkaline electrolyte and selecting a cobalt vanadium phosphate Co(H2O)4(VOPO4)2 as a precursor. The reconstructed vanadic oxide-doped cobalt pyrophosphate catalyst V2O5-Co2P2O7 exhibited efficient electrocatalytic activity for the OER in 1.0 M KOH, requiring a low overpotential of 199 mV at 10 mA cm-2, compared to the reported pyrophosphate electrocatalysts. The porous morphology and doping of vanadic oxide after electrochemical reconstruction were beneficial to enhance the electrocatalytic performance for the OER, through improving the surface area to bring in more accessibly active sites and regulating the electronic structures. The results provided a promising strategy to prepare the pyrophosphate electrocatalysts and improve the performance of the OER catalyst.
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Affiliation(s)
- Pei-Ze Yang
- College of Chemistry and Materials Engineering, Liaoning Professional Technology Innovation Center of Liaoning Province for Conversion Materials of Solar Cell, Bohai University, Jinzhou 121000, P. R. China
| | - Xiang Wang
- College of Chemistry and Materials Engineering, Liaoning Professional Technology Innovation Center of Liaoning Province for Conversion Materials of Solar Cell, Bohai University, Jinzhou 121000, P. R. China
| | - Ling-Jie Zhang
- College of Chemistry and Materials Engineering, Liaoning Professional Technology Innovation Center of Liaoning Province for Conversion Materials of Solar Cell, Bohai University, Jinzhou 121000, P. R. China
| | - Na Tong
- College of Chemistry and Materials Engineering, Liaoning Professional Technology Innovation Center of Liaoning Province for Conversion Materials of Solar Cell, Bohai University, Jinzhou 121000, P. R. China
| | - Xiu-Li Wang
- College of Chemistry and Materials Engineering, Liaoning Professional Technology Innovation Center of Liaoning Province for Conversion Materials of Solar Cell, Bohai University, Jinzhou 121000, P. R. China
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11
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Zan L, Amin HMA, Mostafa E, Abd-El-Latif AA, Iqbal S, Baltruschat H. Electrodeposited Cobalt Nanosheets on Smooth Silver as a Bifunctional Catalyst for OER and ORR: In Situ Structural and Catalytic Characterization. ACS APPLIED MATERIALS & INTERFACES 2022; 14:55458-55470. [PMID: 36490358 DOI: 10.1021/acsami.2c12163] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Developing earth-abundant, cost-effective, and active bifunctional electrocatalysts for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is key to boosting sustainable energy systems such as electrolyzers and lithium-air batteries. However, the performance of promising cobalt-based materials is impaired by the external effects of binders and carbon additives as well as inhomogeneous electrode fabrication. In this work, binder- and carbon-free flower-like Co-decorated Ag catalytic nanosheets were in situ-synthesized via a simple electrodeposition approach. The morphology, composition, and structure of Co/Ag before and after OER were characterized using scanning electron microscopy (SEM), energy-dispersive X-ray (EDX), X-ray photoelectron spectroscopy (XPS), and X-ray diffraction (XRD). Co/Ag thin film electrodes with various Co contents exhibited a bifunctional activity toward ORR and OER due to a synergistic effect. XPS analysis suggested the formation of Co3O4 as the main active species for OER. In particular, Co (83%)/Ag surface revealed a 60 mV lower ORR overpotential than a pure Ag surface and even lower than drop-casted Co3O4 nanoparticles on Ag surface. Only 1.5% peroxide was generated, suggesting a four-electron transfer ORR. In addition, the OER onset potential on Co/Ag is 60 mV less than Co3O4. Tafel slopes of 71 and 75 mV dec-1 were obtained for ORR and OER, respectively. Importantly, the three-dimensional (3D) growth mechanism of a cobalt layer (∼1 nm) on a well-defined atomic smooth Ag surface is unraveled by in situ electrochemical scanning tunneling microscopy (EC-STM). EC-STM suggests that Co prefers to nucleate at the step edges of Ag and grows in a 3D, forming nanoparticles, where the deposition/dissolution process of the Co adlayer on Ag is reversible. This investigation may provide insights into design strategies of efficient oxygen electrocatalysts.
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Affiliation(s)
- Lingxing Zan
- Institute of Physical and Theoretical Chemistry, University of Bonn, Bonn53117, Germany
- Key Laboratory of Chemical Reaction Engineering of Shaanxi Province, College of Chemistry & Chemical Engineering, Yan'an University, Yan'an716000, China
| | - Hatem M A Amin
- Institute of Physical and Theoretical Chemistry, University of Bonn, Bonn53117, Germany
- Chemistry Department, Faculty of Science, Cairo University, Giza12613, Egypt
| | - Ehab Mostafa
- Institute of Physical and Theoretical Chemistry, University of Bonn, Bonn53117, Germany
- Chemistry Department, Faculty of Science, Mansoura University, Mansoura35516, Egypt
| | - Abdelaziz A Abd-El-Latif
- Institute of Physical and Theoretical Chemistry, University of Bonn, Bonn53117, Germany
- Physical Chemistry Department, National Research Center, Cairo12311, Egypt
| | - Shahid Iqbal
- Institute of Physical and Theoretical Chemistry, University of Bonn, Bonn53117, Germany
| | - Helmut Baltruschat
- Institute of Physical and Theoretical Chemistry, University of Bonn, Bonn53117, Germany
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12
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Aromatic carboxylic acid derived bimetallic nickel/cobalt electrocatalysts for oxygen evolution reaction and hydrogen peroxide sensing applications. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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13
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Xia C, Li Y, Je M, Kim J, Cho SM, Choi CH, Choi H, Kim TH, Kim JK. Nanocrystalline Iron Pyrophosphate-Regulated Amorphous Phosphate Overlayer for Enhancing Solar Water Oxidation. NANO-MICRO LETTERS 2022; 14:209. [PMID: 36315297 PMCID: PMC9622969 DOI: 10.1007/s40820-022-00955-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Accepted: 09/25/2022] [Indexed: 06/16/2023]
Abstract
A rational regulation of the solar water splitting reaction pathway by adjusting the surface composition and phase structure of catalysts is a substantial approach to ameliorate the sluggish reaction kinetics and improve the energy conversion efficiency. In this study, we demonstrate a nanocrystalline iron pyrophosphate (Fe4(P2O7)3, FePy)-regulated hybrid overlayer with amorphous iron phosphate (FePO4, FePi) on the surface of metal oxide nanostructure with boosted photoelectrochemical (PEC) water oxidation. By manipulating the facile electrochemical surface treatment followed by the phosphating process, nanocrystalline FePy is localized in the FePi amorphous overlayer to form a heterogeneous hybrid structure. The FePy-regulated hybrid overlayer (FePy@FePi) results in significantly enhanced PEC performance with long-term durability. Compared with the homogeneous FePi amorphous overlayer, FePy@FePi can improve the charge transfer efficiency more significantly, from 60% of FePi to 79% of FePy@FePi. Our density-functional theory calculations reveal that the coexistence of FePi and FePy phases on the surface of metal oxide results in much better oxygen evolution reaction kinetics, where the FePi was found to have a typical down-hill reaction for the conversion from OH* to O2, while FePy has a low free energy for the formation of OH*.
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Affiliation(s)
- Chengkai Xia
- School of Chemical Engineering, Sungkyunkwan University (SKKU), 2066 Seobu-ro, Jangan-gu, Suwon, 16419, Republic of Korea
| | - Yuankai Li
- School of Chemical Engineering, Sungkyunkwan University (SKKU), 2066 Seobu-ro, Jangan-gu, Suwon, 16419, Republic of Korea
| | - Minyeong Je
- Theoretical Materials and Chemistry Group, Institute of Inorganic Chemistry, University of Cologne, Greinstr. 6, 50939, Cologne, Germany
| | - Jaekyum Kim
- School of Chemical Engineering, Sungkyunkwan University (SKKU), 2066 Seobu-ro, Jangan-gu, Suwon, 16419, Republic of Korea
| | - Sung Min Cho
- School of Chemical Engineering, Sungkyunkwan University (SKKU), 2066 Seobu-ro, Jangan-gu, Suwon, 16419, Republic of Korea
| | - Chang Hyuck Choi
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Heechae Choi
- Theoretical Materials and Chemistry Group, Institute of Inorganic Chemistry, University of Cologne, Greinstr. 6, 50939, Cologne, Germany
| | - Tae-Hoon Kim
- Department of Materials Science and Engineering, Engineering Research Center, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Jung Kyu Kim
- School of Chemical Engineering, Sungkyunkwan University (SKKU), 2066 Seobu-ro, Jangan-gu, Suwon, 16419, Republic of Korea.
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14
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Yu M, Weidenthaler C, Wang Y, Budiyanto E, Onur Sahin E, Chen M, DeBeer S, Rüdiger O, Tüysüz H. Surface Boron Modulation on Cobalt Oxide Nanocrystals for Electrochemical Oxygen Evolution Reaction. Angew Chem Int Ed Engl 2022; 61:e202211543. [PMID: 36001016 PMCID: PMC9826365 DOI: 10.1002/anie.202211543] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Indexed: 01/11/2023]
Abstract
Herein, we show that coupling boron with cobalt oxide tunes its structure and significantly boost its electrocatalytic performance for the oxygen evolution reaction (OER). Through a simple precipitation and thermal treatment process, a series of Co-B oxides with tunable morphologies and textural parameters were prepared. Detailed structural analysis supported first the formation of an disordered and partially amorphous material with nanosized Co3 BO5 and/or Co2 B2 O6 being present on the local atomic scale. The boron modulation resulted in a superior OER reactivity by delivering a large current and an overpotential of 338 mV to reach a current density of 10 mA cm-2 in 1 M KOH electrolyte. Identical location transmission electron microscopy and in situ electrochemical Raman spectroscopy studies revealed alteration and surface re-construction of materials, and formation of CoO2 and (oxy)hydroxide intermediate, which were found to be highly dependent on crystallinity of the samples.
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Affiliation(s)
- Mingquan Yu
- Max-Planck-Institut für KohlenforschungKaiser-Wilhelm-Platz 1D-45470Mülheim an der RuhrGermany
| | - Claudia Weidenthaler
- Max-Planck-Institut für KohlenforschungKaiser-Wilhelm-Platz 1D-45470Mülheim an der RuhrGermany
| | - Yue Wang
- Max-Planck-Institut für KohlenforschungKaiser-Wilhelm-Platz 1D-45470Mülheim an der RuhrGermany
| | - Eko Budiyanto
- Max-Planck-Institut für KohlenforschungKaiser-Wilhelm-Platz 1D-45470Mülheim an der RuhrGermany
| | - Ezgi Onur Sahin
- Max-Planck-Institut für KohlenforschungKaiser-Wilhelm-Platz 1D-45470Mülheim an der RuhrGermany
| | - Minmin Chen
- Max Planck Institute for Chemical Energy ConversionStiftstrasse 34–36D-45470Mülheim an der RuhrGermany
| | - Serena DeBeer
- Max Planck Institute for Chemical Energy ConversionStiftstrasse 34–36D-45470Mülheim an der RuhrGermany
| | - Olaf Rüdiger
- Max Planck Institute for Chemical Energy ConversionStiftstrasse 34–36D-45470Mülheim an der RuhrGermany
| | - Harun Tüysüz
- Max-Planck-Institut für KohlenforschungKaiser-Wilhelm-Platz 1D-45470Mülheim an der RuhrGermany
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15
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Structural Fine‐Tuning and In‐situ Generation of P, O Vacancies in Hollow Co‐Ferrocene‐MOFs Derived Phosphides for Efficient Water Oxidation. ChemCatChem 2022. [DOI: 10.1002/cctc.202200558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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16
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Chen Y, Seo JK, Sun Y, Wynn TA, Olguin M, Zhang M, Wang J, Xi S, Du Y, Yuan K, Chen W, Fisher AC, Wang M, Feng Z, Gracia J, Huang L, Du S, Gao HJ, Meng YS, Xu ZJ. Enhanced oxygen evolution over dual corner-shared cobalt tetrahedra. Nat Commun 2022; 13:5510. [PMID: 36127321 PMCID: PMC9489709 DOI: 10.1038/s41467-022-33000-w] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 08/25/2022] [Indexed: 11/30/2022] Open
Abstract
Developing efficient catalysts is of paramount importance to oxygen evolution, a sluggish anodic reaction that provides essential electrons and protons for various electrochemical processes, such as hydrogen generation. Here, we report that the oxygen evolution reaction (OER) can be efficiently catalyzed by cobalt tetrahedra, which are stabilized over the surface of a Swedenborgite-type YBCo4O7 material. We reveal that the surface of YBaCo4O7 possesses strong resilience towards structural amorphization during OER, which originates from its distinctive structural evolution toward electrochemical oxidation. The bulk of YBaCo4O7 composes of corner-sharing only CoO4 tetrahedra, which can flexibly alter their positions to accommodate the insertion of interstitial oxygen ions and mediate the stress during the electrochemical oxidation. The density functional theory calculations demonstrate that the OER is efficiently catalyzed by a binuclear active site of dual corner-shared cobalt tetrahedra, which have a coordination number switching between 3 and 4 during the reaction. We expect that the reported active structural motif of dual corner-shared cobalt tetrahedra in this study could enable further development of compounds for catalyzing the OER. Efficient oxygen evolution relies on the development of promising catalysts. Herein, the authors demonstrate that cobalt tetrahedra, stabilized over the surface of YBCo4O7 material, can catalyze oxygen evolution reaction efficiently.
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Affiliation(s)
- Yubo Chen
- School of Material Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore.,The Cambridge Centre for Advanced Research and Education in Singapore, 1 CREATE way, Singapore, 138602, Singapore.,Solar Fuels Laboratory, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore.,Energy Research Institute @ Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Joon Kyo Seo
- Department of Nano Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA.,Materials Science and Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA.,Gwangju Clean Energy Research Center, Korea Institute of Energy Research, Gwangju, 61003, Republic of Korea
| | - Yuanmiao Sun
- School of Material Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Thomas A Wynn
- Department of Nano Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA.,Materials Science and Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA
| | - Marco Olguin
- Department of Nano Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA.,Materials Science and Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA
| | - Minghao Zhang
- Department of Nano Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA.,Materials Science and Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA
| | - Jingxian Wang
- School of Material Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Shibo Xi
- Institute of Chemical and Engineering Sciences, A*STAR, 1 Pesek Road, Singapore, 627833, Singapore
| | - Yonghua Du
- Institute of Chemical and Engineering Sciences, A*STAR, 1 Pesek Road, Singapore, 627833, Singapore
| | - Kaidi Yuan
- Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore, 117542, Singapore
| | - Wei Chen
- Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore, 117542, Singapore
| | - Adrian C Fisher
- The Cambridge Centre for Advanced Research and Education in Singapore, 1 CREATE way, Singapore, 138602, Singapore.,Department of Chemical Engineering, University of Cambridge, Cambridge, CB2 3RA, UK
| | - Maoyu Wang
- School of Chemical, Biological, and Environmental Engineering, Oregon State University, Corvallis, OR, 97331, USA
| | - Zhenxing Feng
- School of Chemical, Biological, and Environmental Engineering, Oregon State University, Corvallis, OR, 97331, USA
| | - Jose Gracia
- MagnetoCat SL, General Polavieja 9 3I, Alicante, 03012, Spain
| | - Li Huang
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Science, Beijing, 100190, China
| | - Shixuan Du
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Science, Beijing, 100190, China
| | - Hong-Jun Gao
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Science, Beijing, 100190, China
| | - Ying Shirley Meng
- Department of Nano Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA. .,Materials Science and Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA. .,Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL, 60637, USA.
| | - Zhichuan J Xu
- School of Material Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore. .,The Cambridge Centre for Advanced Research and Education in Singapore, 1 CREATE way, Singapore, 138602, Singapore. .,Solar Fuels Laboratory, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore. .,Energy Research Institute @ Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore.
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17
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Gond R, Singh S, Zhao X, Singh D, Ahuja R, Fichtner M, Barpanda P. Pyrophosphate Na 2CoP 2O 7 Polymorphs as Efficient Bifunctional Oxygen Electrocatalysts for Zinc-Air Batteries. ACS APPLIED MATERIALS & INTERFACES 2022; 14:40761-40770. [PMID: 36065996 DOI: 10.1021/acsami.2c06944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Developing earth-abundant low-cost bifunctional oxygen electrocatalysts is a key approach to realizing efficient energy storage and conversion. By exploring Co-based sodium battery materials, here we have unveiled nanostructured pyrophosphate Na2CoP2O7 polymorphs displaying efficient bifunctional electrocatalytic activity. While the orthorhombic polymorph (o-NCPy) has superior oxygen evolution reaction (OER) activity, the triclinic polymorph (t-NCPy) delivers better oxygen reduction reaction (ORR) activity. Simply by tuning the annealing condition, these pyrophosphate polymorphs can be easily prepared at temperatures as low as 500 °C. The electrocatalytic activity is rooted in the Co redox center with the (100) active surface and stable structural framework as per ab initio calculations. It marks the first case of phospho-anionic systems with both polymorphs showing stable bifunctional activity with low combined overpotential (ca. ∼0.7 V) comparable to that of reported state-of-the-art catalysts. These nanoscale cobalt pyrophosphates can be implemented in rechargeable zinc-air batteries.
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Affiliation(s)
- Ritambhara Gond
- Faraday Materials Laboratory (FaMaL), Materials Research Centre, Indian Institute of Science, Bangalore 560012, India
- Department of Chemistry, Ångström Laboratory, Uppsala University, Box 516, 75120 Uppsala, Sweden
| | - Shashwat Singh
- Faraday Materials Laboratory (FaMaL), Materials Research Centre, Indian Institute of Science, Bangalore 560012, India
- Normandie University, ENSICAEN, UNICAEN, CNRS, CRISMAT, 14000 Caen, France
| | - Xiaofeng Zhao
- Condensed Matter Theory Group, Materials Theory Division, Department of Physics and Astronomy, Uppsala University, Box 516, 75120 Uppsala, Sweden
- State Key Laboratory of Environment-Friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, P. R. China
| | - Deobrat Singh
- Condensed Matter Theory Group, Materials Theory Division, Department of Physics and Astronomy, Uppsala University, Box 516, 75120 Uppsala, Sweden
| | - Rajeev Ahuja
- Condensed Matter Theory Group, Materials Theory Division, Department of Physics and Astronomy, Uppsala University, Box 516, 75120 Uppsala, Sweden
- Department of Physics, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India
| | - Maximilian Fichtner
- Helmholtz Institute Ulm (HIU), Electrochemical Energy Storage, Ulm 89081, Germany
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Karlsruhe 76021, Germany
| | - Prabeer Barpanda
- Faraday Materials Laboratory (FaMaL), Materials Research Centre, Indian Institute of Science, Bangalore 560012, India
- Helmholtz Institute Ulm (HIU), Electrochemical Energy Storage, Ulm 89081, Germany
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Karlsruhe 76021, Germany
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18
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Yu M, Weidenthaler C, Wang Y, Budiyanto E, Sahin EO, Chen M, DeBeer S, Rüdiger O, Tüysüz H. Surface boron modulation on cobalt oxide nanocrystals for electrochemical oxygen evolution reaction. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202211543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mingquan Yu
- Max-Planck-Institut für Kohlenforschung: Max-Planck-Institut fur Kohlenforschung Heterogeneous Catalysis GERMANY
| | - Claudia Weidenthaler
- Max-Planck-Institut für Kohlenforschung: Max-Planck-Institut fur Kohlenforschung Powder Diffraction and Surface Spectroscopy GERMANY
| | - Yue Wang
- Max-Planck-Institut für Kohlenforschung: Max-Planck-Institut fur Kohlenforschung Heterogeneous Catalysis GERMANY
| | - Eko Budiyanto
- Max-Planck-Institut für Kohlenforschung: Max-Planck-Institut fur Kohlenforschung Heterogeneous Catalysis GERMANY
| | - Ezgi Onur Sahin
- Max-Planck-Institut für Kohlenforschung: Max-Planck-Institut fur Kohlenforschung Powder Diffraction and Surface Spectroscopy GERMANY
| | - Minmin Chen
- Max-Planck-Institute for Chemical Energy Conversion: Max-Planck-Institut fur chemische Energiekonversion Inorganic Spectroscopy GERMANY
| | - Serena DeBeer
- Max-Planck-Institut für chemische Energiekonversion: Max-Planck-Institut fur chemische Energiekonversion Inorganic Spectroscopy GERMANY
| | - Olaf Rüdiger
- Max-Planck-Institut für chemische Energiekonversion: Max-Planck-Institut fur chemische Energiekonversion Inorganic Spectroscopy GERMANY
| | - Harun Tüysüz
- Max-Planck-Institut für Kohlenforschung: Max-Planck-Institut fur Kohlenforschung Heterogeneous Catalysis Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr GERMANY
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19
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Avcı ÖN, Sementa L, Fortunelli A. Mechanisms of the Oxygen Evolution Reaction on NiFe 2O 4 and CoFe 2O 4 Inverse-Spinel Oxides. ACS Catal 2022; 12:9058-9073. [PMID: 35966604 PMCID: PMC9361295 DOI: 10.1021/acscatal.2c01534] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 06/29/2022] [Indexed: 01/12/2023]
Abstract
![]()
Spinel ferrites, especially Nickel ferrite, NiFe2O4, and Cobalt ferrite, CoFe2O4, are efficient
and promising anode catalyst materials in the field of electrochemical
water splitting. Using density functional theory, we extensively investigate
and quantitatively model the mechanism and energetics of the oxygen
evolution reaction (OER) on the (001) facets of their inverse-spinel
structure, thought as the most abundant orientations under reaction
conditions. We catalogue a wide set of intermediates and mechanistic
pathways, including the lattice oxygen mechanism (LOM) and adsorbate
evolution mechanism (AEM), along with critical (rate-determining)
O–O bond formation barriers and transition-state structures.
In the case of NiFe2O4, we predict a Fe-site-assisted
LOM pathway as the preferred OER mechanism, with a barrier (ΔG⧧) of 0.84 eV at U =
1.63 V versus SHE and a turnover frequency (TOF) of 0.26 s–1 at 0.40 V overpotential. In the case of CoFe2O4, we find that a Fe-site-assisted LOM pathway (ΔG⧧ = 0.79 eV at U = 1.63 V vs SHE, TOF = 1.81 s–1 at 0.40 V overpotential)
and a Co-site-assisted AEM pathway (ΔG⧧ = 0.79 eV at bias > U = 1.34 V vs SHE, TOF = 1.81 s–1 at bias >1.34
V)
could both play a role, suggesting a coexistence of active sites,
in keeping with experimental observations. The computationally predicted
turnover frequencies exhibit a fair agreement with experimentally
reported data and suggest CoFe2O4 as a more
promising OER catalyst than NiFe2O4 in the pristine case, especially for the Co-site-assisted OER pathway,
and may offer a basis for further progress and optimization.
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Affiliation(s)
- Öyküm N. Avcı
- CNR-ICCOM, Consiglio Nazionale delle Ricerche, Via G. Moruzzi 1, Pisa 56124, Italy
- Department of Chemistry and Industrial Chemistry, DSCM, University of Pisa, Via G. Moruzzi 13, Pisa 56124, Italy
| | - Luca Sementa
- CNR- IPCF, Istituto per i Processi Chimico-Fisici, Via G. Moruzzi 1, Pisa 56124, Italy
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20
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In Operando Identification of In Situ Formed Metalloid Zinc
δ+
Active Sites for Highly Efficient Electrocatalyzed Carbon Dioxide Reduction. Angew Chem Int Ed Engl 2022; 61:e202202298. [DOI: 10.1002/anie.202202298] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Indexed: 01/16/2023]
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21
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Zhang XY, Li WJ, Chen J, Wu XF, Liu YW, Mao F, Yuan HY, Zhu M, Dai S, Wang HF, Hu P, Sun C, Liu PF, Yang H. Operando Metalloid Znδ+ Active Sites for Highly Efficient Carbon Dioxide Reduction Electrocatalysis. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xin Yu Zhang
- East China University of Science and Technology School of Materials Science and Engineering CHINA
| | - Wen Jing Li
- East China University of Science and Technology School of Materials Science and Engineering CHINA
| | - Jiacheng Chen
- East China University of Science and Technology School of Chemical Engineering CHINA
| | - Xue Feng Wu
- East China University of Science and Technology School of Materials Science and Engineering CHINA
| | - Yuan Wei Liu
- East China University of Science and Technology School of Materials Science and Engineering CHINA
| | - Fangxin Mao
- East China University of Science and Technology School of Materials Science and Engineering CHINA
| | - Hai Yang Yuan
- East China University of Science and Technology School of Materials Science and Engineering CHINA
| | - Minghui Zhu
- East China University of Science and Technology School of Chemical Engineering CHINA
| | - Sheng Dai
- East China University of Science and Technology School of Chemistry and Molecular Engineering CHINA
| | - Hai Feng Wang
- East China University of Science and Technology School of Chemistry and Molecular Engineering CHINA
| | - P. Hu
- Queen's University Belfast School of Chemistry and Chemical Engineering UNITED KINGDOM
| | - Chenghua Sun
- Swinburne University of Technology Department of Chemistry and Biotechnology AUSTRALIA
| | - Peng Fei Liu
- East China University of Science and Technology School of Materials Science and Engineering 130 Meilong Road, Xuhui District, Shanghai 200237 Shanghai CHINA
| | - Huagui Yang
- East China University of Science and Technology School of Materials Science and Engineering Road Meilong 130 200237 Shanghai CHINA
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22
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Inocêncio CVM, Holade Y, Morais C, Kokoh KB, Napporn TW. Electrochemical hydrogen generation technology: Challenges in electrodes materials for a sustainable energy. ELECTROCHEMICAL SCIENCE ADVANCES 2022. [DOI: 10.1002/elsa.202100206] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Affiliation(s)
- Carlos V. M. Inocêncio
- Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP) UMR 7285 CNRS Université de Poitiers Poitiers France
| | - Yaovi Holade
- Institut Européen des Membranes (IEM) UMR 5635 CNRS ENSCM Université de Montpellier Montpellier France
| | - Claudia Morais
- Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP) UMR 7285 CNRS Université de Poitiers Poitiers France
| | - K. Boniface Kokoh
- Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP) UMR 7285 CNRS Université de Poitiers Poitiers France
| | - Teko W. Napporn
- Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP) UMR 7285 CNRS Université de Poitiers Poitiers France
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23
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Sada K, Gond R, Bothra N, Pati SK, Barpanda P. Potassium Cobalt Pyrophosphate as a Nonprecious Bifunctional Electrocatalyst for Zinc-Air Batteries. ACS APPLIED MATERIALS & INTERFACES 2022; 14:8992-9001. [PMID: 35133786 DOI: 10.1021/acsami.1c21481] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Economic and sustainable (ecological) energy storage forms a major pillar of the global energy sector. Bifunctional electrocatalysts, based on oxygen electrolysis, play a key role in the development of rechargeable metal-air batteries. Pursuing precious metal-free economic catalysts, here, we report K2CoP2O7 pyrophosphate as a robust cathode for secondary zinc-air batteries with efficient oxygen evolution and oxygen reduction (OER||ORR) activity. Prepared by autocombustion, nanoscale K2CoP2O7 exhibited excellent oxygen reduction and evolution reactions among all phosphate-based electrocatalysts. In particular, the OER activity surpassed that of commercial RuO2 with low overpotential (0.27 V). First-principles calculations revealed that the bifunctional activity is rooted in the Co active site with the CoO5 local coordination in the most stable (110) surface. This nanostructured (tetragonal) pyrophosphate can be harnessed as an economic bifunctional catalyst for zinc-air batteries.
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Affiliation(s)
- Krishnakanth Sada
- Faraday Materials Laboratory (FaMaL), Materials Research Centre, Indian Institute of Science, Bangalore 560012, India
| | - Ritambhara Gond
- Faraday Materials Laboratory (FaMaL), Materials Research Centre, Indian Institute of Science, Bangalore 560012, India
| | - Neha Bothra
- School of Advanced Materials (SAMat), Theoretical Science Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore 560064, India
| | - Swapan K Pati
- School of Advanced Materials (SAMat), Theoretical Science Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore 560064, India
| | - Prabeer Barpanda
- Faraday Materials Laboratory (FaMaL), Materials Research Centre, Indian Institute of Science, Bangalore 560012, India
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24
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Kashif M, Fiaz M, Sajid MS, Gul F, Farid MA, Ashiq MN, Najam-ul-Haq M, Athar M. Functionalization of UiO-66-NH2 by In-Situ Incorporation of Nanomaterials to Enhance Photocatalytic Efficiency Towards Oxygen Evolution Reaction. Catal Letters 2022. [DOI: 10.1007/s10562-022-03937-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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25
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Structure and Properties of Copper Pyrophosphate by First-Principle Calculations. MATERIALS 2022; 15:ma15030842. [PMID: 35160787 PMCID: PMC8836541 DOI: 10.3390/ma15030842] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 01/14/2022] [Accepted: 01/18/2022] [Indexed: 02/04/2023]
Abstract
Investigated the structural, electronic, and magnetic properties of copper pyrophosphate dihydrate (CuPPD) by the first-principle calculations based on the density functional theory (DFT). Simulations were performed with the generalized gradient approximation (GGA) of the exchange-correlation functional (Exc) supplemented by an on-site Coulomb self-interaction (U–Hubbard term). It was confirmed that the GGA method did not provide a satisfactory result in predicting the electronic energy band gap width (Eg) of the CuPPD crystals. Simultaneously, we measured the Eg of CuPPD nanocrystal placed inside mesoporous silica using the ultraviolet–visible spectroscopy (UV–VIS) technique. The proposed Hubbard correction for Cu-3d and O-2p states at U = 4.64 eV reproduces the experimental value of Eg = 2.34 eV. The electronic properties presented in this study and the results of UV–VIS investigations likely identify the semiconductor character of CuPPD crystal, which raises the prospect of using it as a component determining functional properties of nanomaterials, including quantum dots.
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Xu K, Guo W, Zhang H, Zhou H, Zhu Z, Zhou Y, Liang W, Yu T, Zhao H, He M, Yang T. An efficient vanadium/cobalt metaphosphate electrocatalyst for hydrogen and oxygen evolution in alkaline water splitting. Inorg Chem Front 2022. [DOI: 10.1039/d2qi01238c] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hydrogen, which meets the goal of carbon neutrality, is expected to replace conventional fossil fuels in the near future. Electrochemical water splitting is a clean hydrogen production technology, but its...
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Wang X, Yang M, Feng W, Qiao L, An X, Kong Q, Liu X, Wang Y, Liu Y, Li T, Xiang Z, Wang Q, Wu X. Significantly enhanced oxygen evolution reaction performance by tuning surface states of Co through Cu modification in alloy structure. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115823] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Wang H, Zhang R, Li YY, Wang D, Lin Y, Xie T. Simple electrodeposition to synthesize a NiFeS x-modified Ti-Fe 2O 3 photoanode: an effective strategy to improve the photoelectrochemical water oxidation reaction. Dalton Trans 2021; 50:15551-15557. [PMID: 34665188 DOI: 10.1039/d1dt02303a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Decorating a high-efficiency oxygen evolution reaction (OER) electrocatalyst as a cocatalyst on an α-Fe2O3 photoanode is known to be one of the most efficient methods to improve the photoelectrochemical (PEC) water oxidation activity. In our work, different from traditional methods of transition metal sulfide cocatalyst synthesis, an NiFeSx-decorated Ti-Fe2O3 photoanode is synthesized through a simple one-step electrodeposition method, which benefits the interface between Ti-Fe2O3 and NiFeSx. With the help of this excellent OER electrocatalyst, the photocurrent density of the NiFeSx-Ti-Fe2O3 photoanode rises to 3 mA cm-2 at 1.23 V vs. RHE, which is 2.5 times greater than the photocurrent of Ti-Fe2O3. Moreover, the onset potential of NiFeSx-Ti-Fe2O3 shifts negatively by 170 mV compared with that of pure Ti-Fe2O3. Furthermore, surface photovoltage spectroscopy (SPV) and transient photovoltage (TPV) techniques and photoelectrochemical impedance spectroscopy (PEIS) were used to analyze the true effects of NiFeSx as an efficient cocatalyst for enhancing the PEC performance of the NiFeSx-Ti-Fe2O3 photoanode. This work provides a simple method for loading a low-cost and efficient cocatalyst to modify a Ti-Fe2O3 photoanode for the PEC water oxidation reaction.
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Affiliation(s)
- Haoyu Wang
- College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Rui Zhang
- College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Yin Yin Li
- College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Dejun Wang
- College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Yanhong Lin
- College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Tengfeng Xie
- College of Chemistry, Jilin University, Changchun, 130012, P. R. China
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Pyo E, Lee K, Park GT, Ha SY, Lee S, Kim CS, Kwon KY. Concurrent occurrence of electrochemical dissolution/deposition of cobalt-calcium phosphate composite. RSC Adv 2021; 11:28342-28346. [PMID: 35480747 PMCID: PMC9037991 DOI: 10.1039/d1ra05108c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 08/15/2021] [Indexed: 11/21/2022] Open
Abstract
Amorphous cobalt-calcium phosphate composite (CCPC) films are electrochemically prepared on various electrodes by utilizing the solid phase of hydroxyapatite as a phosphate source. The CCPC film formation is surface process in which the dissolution of hydroxyapatite and the deposition of CCPC film concurrently occur on the electrode surface without the mass transfer of phosphate ions into the bulk solution. Elemental, crystallographic, and morphological analyses (EDX, ICP-AES, XPS, and XRD) indicate that the CCPC is composed of amorphous cobalt oxide with calcium and phosphate. The film exhibits durable oxygen evolution reaction (OER) catalytic properties under neutral and basic aqueous condition. Compared to using solution phase of phosphate source, our preparation method utilizing solid hydroxyapatite has advantage of preventing unnecessary chemical reaction between phosphate and other chemical species in bulk solution.
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Affiliation(s)
- Eunji Pyo
- Department of Chemistry, Gyeongsang National University and Research Institute for Green Energy Convergence Technology Jinju 52828 South Korea
| | - Keunyoung Lee
- Department of Chemistry, Gyeongsang National University and Research Institute for Green Energy Convergence Technology Jinju 52828 South Korea
| | - Gi-Tae Park
- Analysis & Certification Center, Korea Institute of Ceramic Engineering & Technology Jinju 52851 South Korea
| | - Se-Young Ha
- Analysis & Certification Center, Korea Institute of Ceramic Engineering & Technology Jinju 52851 South Korea
| | - Seonhong Lee
- Analysis & Certification Center, Korea Institute of Ceramic Engineering & Technology Jinju 52851 South Korea
| | - Chung Soo Kim
- Analysis & Certification Center, Korea Institute of Ceramic Engineering & Technology Jinju 52851 South Korea
| | - Ki-Young Kwon
- Department of Chemistry, Gyeongsang National University and Research Institute for Green Energy Convergence Technology Jinju 52828 South Korea
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Gao L, Cui X, Sewell CD, Li J, Lin Z. Recent advances in activating surface reconstruction for the high-efficiency oxygen evolution reaction. Chem Soc Rev 2021; 50:8428-8469. [PMID: 34259239 DOI: 10.1039/d0cs00962h] [Citation(s) in RCA: 203] [Impact Index Per Article: 67.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A climax in the development of cost-effective and high-efficiency transition metal-based electrocatalysts has been witnessed recently for sustainable energy and related conversion technologies. In this regard, structure-activity relationships based on several descriptors have already been proposed to rationally design electrocatalysts. However, the dynamic reconstruction of the surface structures and compositions of catalysts during electrocatalytic water oxidation, especially during the anodic oxygen evolution reaction (OER), complicate the streamlined prediction of the catalytic activity. With the achievements in operando and in situ techniques, it has been found that electrocatalysts undergo surface reconstruction to form the actual active species in situ accompanied with an increase in their oxidation state during OER in alkaline solution. Accordingly, a thorough understanding of the surface reconstruction process plays a critical role in establishing unambiguous structure-composition-property relationships in pursuit of high-efficiency electrocatalysts. However, several issues still need to be explored before high electrocatalytic activities can be realized, as follows: (1) the identification of initiators and pathways for surface reconstruction, (2) establishing the relationships between structure, composition, and electrocatalytic activity, and (3) the rational manipulation of in situ catalyst surface reconstruction. In this review, the recent progress in the surface reconstruction of transition metal-based OER catalysts including oxides, non-oxides, hydroxides and alloys is summarized, emphasizing the fundamental understanding of reconstruction behavior from the original precatalysts to the actual catalysts based on operando analysis and theoretical calculations. The state-of-the-art strategies to tailor the surface reconstruction such as substituting/doping with metals, introducing anions, incorporating oxygen vacancies, tuning morphologies and exploiting plasmonic/thermal/photothermal effects are then introduced. Notably, comprehensive operando/in situ characterization together with computational calculations are responsible for unveiling the improvement mechanism for OER. By delivering the progress, strategies, insights, techniques, and perspectives, this review will provide a comprehensive understanding of the surface reconstruction in transition metal-based OER catalysts and future guidelines for their rational development.
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Affiliation(s)
- Likun Gao
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA.
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31
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Murugesan C, Musthafa M, Lochab S, Barpanda P. Cobalt Metaphosphates as Economic Bifunctional Electrocatalysts for Hybrid Sodium-Air Batteries. Inorg Chem 2021; 60:11974-11983. [PMID: 34328325 DOI: 10.1021/acs.inorgchem.1c01009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Bifunctional electrocatalysts are pre-eminent to achieve high capacity, cycling stability, and high Coulombic efficiency for rechargeable hybrid sodium-air batteries. The current work introduces metaphosphate (Na)KCo(PO3)3 nanostructures as noble metal-free bifunctional electrocatalysts suitable for the rechargeable aqueous sodium-air battery. Prepared by the scalable solution combustion method, the metaphosphate class of (Na)KCo(PO3)3 with spherical morphology exhibited robust oxygen reduction as well as evolution activity similar to the state-of-the-art catalysts. NaCo(PO3)3 metaphosphate, when employed as an air cathode in hybrid sodium-air batteries, delivered reasonably low overpotential along with excellent cycling stability with a round-trip energy efficiency of 78%. Cobalt metaphosphates thus form a new class of economical bifunctional catalysts to develop hybrid sodium-air batteries.
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Affiliation(s)
- Chinnasamy Murugesan
- Faraday Materials Laboratory, Materials Research Centre, Indian Institute of Science, Bangalore 560012, India
| | - Mufeeda Musthafa
- Sree Neelakanda Government Sanskrit College, Pattambi, Palakkad 679306, Kerala, India
| | - Shubham Lochab
- Faraday Materials Laboratory, Materials Research Centre, Indian Institute of Science, Bangalore 560012, India
| | - Prabeer Barpanda
- Faraday Materials Laboratory, Materials Research Centre, Indian Institute of Science, Bangalore 560012, India
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Wen H, Zhang S, Yu T, Yi Z, Guo R. ZIF-67-based catalysts for oxygen evolution reaction. NANOSCALE 2021; 13:12058-12087. [PMID: 34231644 DOI: 10.1039/d1nr01669e] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
As a new type of crystalline porous material, the imidazole zeolite framework (ZIF) has attracted widespread attention due to its ultra-high surface area, large pore volume, and unique advantage of easy functionalization. Developing different methods to control the shape and composition of ZIF is very important for its practical application as catalyst. In recent years, nano-ZIF has been considered an electrode material with excellent oxygen evolution reaction (OER) performance, which provides a new way to research electrolyzed water. This review focuses on the morphological engineering of the original ZIF-67 and its derivatives (core-shell, hollow, and array structures) through doping (cation doping, anion doping, and co-doping), derivative composition engineering (metal oxide, phosphide, sulfide, selenide, and telluride), and the corresponding single-atom catalysis. Besides, combined with DFT calculations, it emphasizes the in-depth understanding of actual active sites and provides insights into the internal mechanism of enhancing the OER and proposes the challenges and prospects of ZIF-67 based electrocatalysts. We summarize the application of ZIF-67 and its derivatives in the OER for the first time, which has significantly guided research in this field.
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Affiliation(s)
- Hui Wen
- School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China.
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33
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Li N, Hadt RG, Hayes D, Chen LX, Nocera DG. Detection of high-valent iron species in alloyed oxidic cobaltates for catalysing the oxygen evolution reaction. Nat Commun 2021; 12:4218. [PMID: 34244515 PMCID: PMC8270959 DOI: 10.1038/s41467-021-24453-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Accepted: 06/15/2021] [Indexed: 01/08/2023] Open
Abstract
Iron alloying of oxidic cobaltate catalysts results in catalytic activity for oxygen evolution on par with Ni-Fe oxides in base but at much higher alloying compositions. Zero-field 57Fe Mössbauer spectroscopy and X-ray absorption spectroscopy (XAS) are able to clearly identify Fe4+ in mixed-metal Co-Fe oxides. The highest Fe4+ population is obtained in the 40–60% Fe alloying range, and XAS identifies the ion residing in an octahedral oxide ligand field. The oxygen evolution reaction (OER) activity, as reflected in Tafel analysis of CoFeOx films in 1 M KOH, tracks the absolute concentration of Fe4+. The results reported herein suggest an important role for the formation of the Fe4+ redox state in activating cobaltate OER catalysts at high iron loadings. The capturing of high valent iron in a catalytic reaction is important but difficult task. Here, the authors report identification of a high-valent Fe(IV)-species with different spectroscopic tools such as Mössbauer spectroscopy and X-ray absorption spectroscopy during the course of an oxygen evolving reaction.
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Affiliation(s)
- Nancy Li
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, USA
| | - Ryan G Hadt
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, USA. .,Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, USA.
| | - Dugan Hayes
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, USA. .,Department of Chemistry, University of Rhode Island, Kingston, RI, USA.
| | - Lin X Chen
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, USA.,Department of Chemistry, Northwestern University, Evanston, IL, USA
| | - Daniel G Nocera
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, USA.
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34
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Ferrier J, Csetenyi L, Gadd GM. Selective fungal bioprecipitation of cobalt and nickel for multiple-product metal recovery. Microb Biotechnol 2021; 14:1747-1756. [PMID: 34115922 PMCID: PMC8313247 DOI: 10.1111/1751-7915.13843] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 05/13/2021] [Indexed: 11/26/2022] Open
Abstract
There are a need for novel, economical and efficient metal processing technologies to improve critical metal sustainability, particularly for cobalt and nickel which have extensive applications in low-carbon energy technologies. Fungal metal biorecovery processes show potential in this regard and the products of recovery are also industrially significant. Here we present a basis for selective biorecovery of Co and Ni oxalates and phosphates using reactive spent Aspergillus niger culture filtrate containing mycogenic oxalate and phosphate solubilized from struvite. Selective precipitation of oxalates was achieved by adjusting phosphate-laden filtrates to pH 2.5 prior to precipitation. Co recovery at pH 2.5 was high with a maximum of ~96% achieved, while ~60% Ni recovery was achieved, yielding microscale polyhedral biominerals. Co and Ni phosphates were precipitated at pH 7.5, following prior oxalate removal, resulting in near-total Co recovery (>99%), while Ni phosphate yields were also high with a recovery maximum of 83.0%.
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Affiliation(s)
- John Ferrier
- Geomicrobiology GroupSchool of Life SciencesUniversity of DundeeDundeeDD1 5EHUK
| | - Laszlo Csetenyi
- School of Science and EngineeringFulton BuildingUniversity of DundeeDundeeDD1 5HNUK
| | - Geoffrey Michael Gadd
- Geomicrobiology GroupSchool of Life SciencesUniversity of DundeeDundeeDD1 5EHUK
- State Key Laboratory of Heavy Oil ProcessingBeijing Key Laboratory of Oil and Gas Pollution ControlCollege of Chemical Engineering and EnvironmentChina University of Petroleum18 Fuxue Road, Changping DistrictBeijing102249China
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35
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Yakubovich OV, Shvanskaya LV, Bolotina NB, Ivanova AG, Kiriukhina GV, Dovgaliuk IN, Volkov AS, Dimitrova OV, Vasiliev AN. An Orthorhombic Modification of KCoPO 4 Stabilized under Hydrothermal Conditions: Crystal Chemistry and Magnetic Behavior. Inorg Chem 2021; 60:9461-9470. [PMID: 34128644 DOI: 10.1021/acs.inorgchem.1c00580] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel modification of the KCoPO4, δ-phase has been prepared by hydrothermal synthesis at 553 K. The compound crystallizes in the orthorhombic system with the unit-cell parameters a = 8.5031(8), b = 10.2830(5), c = 54.170(4) Å. The crystal structure was determined based on synchrotron low-temperature single-crystal X-ray diffraction data obtained from an inversion twin in the space group P212121 and refined to R = 0.077 for 5156 reflections with I > 3σ(I). The δ-KCoPO4 possesses a new structure type which is based on a framework built from sharing vertices Co- and P-centered tetrahedra. The {CoPO4-}∞ construction of tetrahedra may be described as assembled from networks formed by two topologically diverse six-membered rings of tetrahedra stacked together through vertex-bridging contacts along the a axis. The ratio of the (UUUDDD) and (UUDUDD) rings, where (U) and (D) denote the orientation of the tetrahedra in the six-membered rings up and down relative to the plane grids, is equal to 5:1. The (UUDUDD) rings form bands parallel to the [010] direction each surrounded from both sides along the c axis by slabs of five ribbons width having alternative (UUUDDD) topology. Open in the [100] direction channels incorporate K+ ions; this structural feature permits to suppose ion-conductive and/or electrochemical properties of the title compound. The possible mechanism of the δ → γ phase transition is discussed on the basis of the crystal chemical analysis of the KCoPO4 polymorphs. The title compound orders magnetically at TN = 24.8 K.
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Affiliation(s)
| | - Larisa V Shvanskaya
- Lomonosov Moscow State University, Moscow 119991, Russia.,National University of Science and Technology "MISiS", Moscow 119049, Russia
| | | | - Anna G Ivanova
- FSRC Crystallography and Photonics, RAS, Moscow 119333, Russia
| | - Galina V Kiriukhina
- Lomonosov Moscow State University, Moscow 119991, Russia.,Institute of Experimental Mineralogy, RAS, Chernogolovka, Moscow region 142432, Russia
| | - Iurii N Dovgaliuk
- Swiss-Norwegian Beamlines, European Synchrotron, Grenoble 38043, France
| | - Anatoly S Volkov
- Lomonosov Moscow State University, Moscow 119991, Russia.,Institute of Experimental Mineralogy, RAS, Chernogolovka, Moscow region 142432, Russia
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Pan DS, Guo ZH, Li JK, Huang S, Zhou LL, Song JL. Rational Construction of a N, F Co-doped Mesoporous Cobalt Phosphate with Rich-Oxygen Vacancies for Oxygen Evolution Reaction and Supercapacitors. Chemistry 2021; 27:7731-7737. [PMID: 33792092 DOI: 10.1002/chem.202100383] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Indexed: 12/30/2022]
Abstract
Transition-metal phosphates have been widely applied as promising candidates for electrochemical energy storage and conversion. In this study, we report a simple method to prepare a N, F co-doped mesoporous cobalt phosphate with rich-oxygen vacancies by in-situ pyrolysis of a Co-phosphate precursor with NH4 + cations and F- anions. Due to this heteroatom doping, it could achieve a current density of 10 mA/cm2 at lower overpotential of 276 mV and smaller Tafel slope of 57.11 mV dec-1 on glassy carbon. Moreover, it could keep 92 % of initial current density for 35 h, indicating it has an excellent stability and durability. Furthermore, the optimal material applied in supercapacitor displays specific capacitance of 206.3 F g-1 at 1 A ⋅ g-1 and maintains cycling stability with 80 % after 3000 cycles. The excellent electrochemical properties should be attributed to N, F co-doping into this Co-based phosphate, which effectively modulates its electronic structure. In addition, its amorphous structure provides more active sites; moreover, its mesoporous structure should be beneficial to mass transfer and electrolyte diffusion.
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Affiliation(s)
- Dong-Sheng Pan
- International Joint Research Center for Photoresponsive Molecules and Materials, School of Chemical and Material Engineering, Jiangnan University, Lihu Street 1800, Wuxi, 214122, P. R. China
| | - Zheng-Han Guo
- International Joint Research Center for Photoresponsive Molecules and Materials, School of Chemical and Material Engineering, Jiangnan University, Lihu Street 1800, Wuxi, 214122, P. R. China
| | - Jin-Kun Li
- International Joint Research Center for Photoresponsive Molecules and Materials, School of Chemical and Material Engineering, Jiangnan University, Lihu Street 1800, Wuxi, 214122, P. R. China
| | - Sai Huang
- International Joint Research Center for Photoresponsive Molecules and Materials, School of Chemical and Material Engineering, Jiangnan University, Lihu Street 1800, Wuxi, 214122, P. R. China
| | - Ling-Li Zhou
- International Joint Research Center for Photoresponsive Molecules and Materials, School of Chemical and Material Engineering, Jiangnan University, Lihu Street 1800, Wuxi, 214122, P. R. China
| | - Jun-Ling Song
- International Joint Research Center for Photoresponsive Molecules and Materials, School of Chemical and Material Engineering, Jiangnan University, Lihu Street 1800, Wuxi, 214122, P. R. China
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Zhu J, Li H, Shan C, Wang S, Lv L, Pan B. Trace Co 2+ coupled with phosphate triggers efficient peroxymonosulfate activation for organic degradation. JOURNAL OF HAZARDOUS MATERIALS 2021; 409:124920. [PMID: 33412472 DOI: 10.1016/j.jhazmat.2020.124920] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 12/17/2020] [Accepted: 12/18/2020] [Indexed: 06/12/2023]
Abstract
Cobalt-mediated activation of peroxymonosulfate (PMS) has been widely used to remove the refractory organic pollutants from contaminated waters. However, the residual cobalt usually at a trace level inevitably brings about secondary pollution to be disposed of. In this study we found that the presence of phosphate could trigger a more efficient catalytic activation of PMS at trace Co2+ dosages (0.17-1.7 μM). Fast degradation of atrazine (ATZ) was observed in the Co2+/PMS/phosphate system, with the pseudo first-order kinetic rate constant as high as 5.4 and 15.4 times that in Co2+/PMS and phosphate/PMS systems respectively under otherwise similar conditions. The presence of phosphate promoted the production of sulfate radical (SO4·-), accompanying the enhanced formation of by-product 1O2 simultaneously. Using a competition reaction kinetics approach, the contribution of SO4·- to ATZ oxidation was determined as 96.5%, suggesting that SO4·- was the main reactive species responsible for ATZ removal. Such favorable effect was partially ascribed to the specific ligand structure of six coordination structure between phosphate and cobalt, which facilitated electron transfer in the CoIII/CoII reduction. In addition, it was dependent upon the aqueous phosphate levels, and low level (< 0.5 mM) was insufficient to drive the CoIII/CoII cycle, whereas the higher level (> 15 mM) showed negative effect since the excessive phosphate could quench SO4·- and·OH. This study is believed to advance the fundamental understanding of the ligand effect on the cobalt-mediated sulfate radicals-based advanced oxidation process.
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Affiliation(s)
- Jinglin Zhu
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
| | - Hongchao Li
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Xiao Ling Wei 200, Nanjing 210094, China
| | - Chao Shan
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China; Research Center for Environmental Nanotechnology (ReCENT), Nanjing University, Nanjing 210023, China
| | - Shu Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
| | - Lu Lv
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
| | - Bingcai Pan
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China; Research Center for Environmental Nanotechnology (ReCENT), Nanjing University, Nanjing 210023, China.
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38
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Gao D, Liu R, Liu S, Greiner S, Anjass M, Biskupek J, Kaiser U, Braun H, Jacob T, Streb C. Electrocatalytic Oxygen Evolution by Hierarchically Structured Cobalt-Iron Composites. ACS APPLIED MATERIALS & INTERFACES 2021; 13:19048-19054. [PMID: 33848123 DOI: 10.1021/acsami.1c03618] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The development of scalable routes to highly active and efficient oxygen evolution reaction (OER) electrocatalysts based on earth-abundant materials is crucial for post-fossil fuel energy schemes. Here, we demonstrate how commercial copper foam electrodes can be functionalized for water oxidation using a facile electrodeposition process. The resulting composite electrode features hierarchically structured cobalt-iron-based catalyst particles, which offer channel-like structures for the transport of electrolyte and release of oxygen gas bubbles. We report high electrocatalytic OER performance as demonstrated by high current densities at low overpotentials (293 mV at j = 50 mA cm-2) and long-term stability under technologically relevant alkaline conditions (>24 h in 1.0 M aqueous KOH).
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Affiliation(s)
- Dandan Gao
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Rongji Liu
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Si Liu
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Simon Greiner
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
- Helmholtz Institute Ulm, Electrochemical Energy Storage (HIU), Helmholtzstr. 11, 89081 Ulm, Germany
- Karlsruhe Institute of Technology, P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Montaha Anjass
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
- Helmholtz Institute Ulm, Electrochemical Energy Storage (HIU), Helmholtzstr. 11, 89081 Ulm, Germany
- Karlsruhe Institute of Technology, P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Johannes Biskupek
- Electron Microscopy of Materials Science, Central Facility for Electron Microscopy, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Ute Kaiser
- Electron Microscopy of Materials Science, Central Facility for Electron Microscopy, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Hanna Braun
- Institute of Electrochemistry, Ulm University, Albert-Einstein-Allee 47, 89081 Ulm, Germany
| | - Timo Jacob
- Helmholtz Institute Ulm, Electrochemical Energy Storage (HIU), Helmholtzstr. 11, 89081 Ulm, Germany
- Institute of Electrochemistry, Ulm University, Albert-Einstein-Allee 47, 89081 Ulm, Germany
- Karlsruhe Institute of Technology, P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Carsten Streb
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
- Helmholtz Institute Ulm, Electrochemical Energy Storage (HIU), Helmholtzstr. 11, 89081 Ulm, Germany
- Karlsruhe Institute of Technology, P.O. Box 3640, 76021 Karlsruhe, Germany
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Song Y, Xu B, Liao T, Guo J, Wu Y, Sun Z. Electronic Structure Tuning of 2D Metal (Hydr)oxides Nanosheets for Electrocatalysis. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2002240. [PMID: 32851763 DOI: 10.1002/smll.202002240] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 05/16/2020] [Indexed: 06/11/2023]
Abstract
2D metal (hydr)oxide nanosheets have captured increasing interest in electrocatalytic applications aroused by their high specific surface areas, enriched chemically active sites, tunable physiochemical properties, etc. In particular, the electrocatalytic reactivities of materials greatly rely on their surface electronic structures. Generally speaking, the electronic structures of catalysts can be well adjusted via controlling their morphologies, defects, and heterostructures. In this Review, the latest advances in 2D metal (hydr)oxide nanosheets are first reviewed, including the applications in electrocatalysis for the hydrogen evolution reaction, oxygen reduction reaction, and oxygen evolution reaction. Then, the electronic structure-property relationships of 2D metal (hydr)oxide nanosheets are discussed to draw a picture of enhancing the electrocatalysis performances through a series of electronic structure tuning strategies. Finally, perspectives on the current challenges and the trends for the future design of 2D metal (hydr)oxide electrocatalysts with prominent catalytic activity are outlined. It is expected that this Review can shed some light on the design of next generation electrocatalysts.
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Affiliation(s)
- Yanhui Song
- Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Taiyuan, 030024, P. R. China
- School of Chemistry and Physics, Queensland University of Technology, Brisbane, Queensland, 4000, Australia
| | - Bingshe Xu
- Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Taiyuan, 030024, P. R. China
- Materials Institute of Atomic and Molecular Science, Shaanxi University of Science & Technology, Xi'an, 710021, P. R. China
| | - Ting Liao
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane, Queensland, 4000, Australia
- Centre for Materials Science, Queensland University of Technology, Brisbane, Queensland, 4000, Australia
| | - Junjie Guo
- Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Taiyuan, 030024, P. R. China
| | - Yucheng Wu
- Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Taiyuan, 030024, P. R. China
| | - Ziqi Sun
- School of Chemistry and Physics, Queensland University of Technology, Brisbane, Queensland, 4000, Australia
- Centre for Materials Science, Queensland University of Technology, Brisbane, Queensland, 4000, Australia
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Schuster R, Wähler T, Kettner M, Agel F, Bauer T, Wasserscheid P, Libuda J. Model Studies on the Ozone-Mediated Synthesis of Cobalt Oxide Nanoparticles from Dicobalt Octacarbonyl in Ionic Liquids. ChemistryOpen 2021; 10:141-152. [PMID: 33565717 PMCID: PMC7874506 DOI: 10.1002/open.202000187] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Low-temperature synthesis in ionic liquids (ILs) offers an efficient route for the preparation of metal oxide nanomaterials with tailor-made properties in a water-free environment. In this work, we investigated the role of 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide [C4 C1 Pyr][NTf2 ] in the synthesis of cobalt oxide nanoparticles from the molecular precursor Co2 (CO)8 with ozone. We performed a model study in ultra-clean, ultrahigh vacuum (UHV) conditions by infrared reflection absorption spectroscopy (IRAS) using Au(111) as a substrate. Exposure of the pure precursor to ozone at low temperatures results in the oxidation of the first layers, leading to the formation of a disordered Cox Oy passivation layer. Similar protection to ozone is also achieved by deposition of an IL layer onto a precursor film prior to ozone exposure. With increasing temperature, the IL gets permeable for ozone and a cobalt oxide film forms at the IL/precursor interface. We show that the interaction with the IL mediates the oxidation and leads to a more densely packed Cox Oy film compared to a direct oxidation of the precursor.
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Affiliation(s)
- Ralf Schuster
- Interface Research and Catalysis, Erlangen Center for Interface Research and Catalysis (ECRC)Friedrich-Alexander-Universität Erlangen-NürnbergEgerlandstraße 391058ErlangenGermany
| | - Tobias Wähler
- Interface Research and Catalysis, Erlangen Center for Interface Research and Catalysis (ECRC)Friedrich-Alexander-Universität Erlangen-NürnbergEgerlandstraße 391058ErlangenGermany
| | - Miroslav Kettner
- Interface Research and Catalysis, Erlangen Center for Interface Research and Catalysis (ECRC)Friedrich-Alexander-Universität Erlangen-NürnbergEgerlandstraße 391058ErlangenGermany
| | - Friederike Agel
- Institute of Chemical Reaction EngineeringFriedrich-Alexander-Universität Erlangen-NürnbergEgerlandstr. 391058ErlangenGermany
| | - Tanja Bauer
- Interface Research and Catalysis, Erlangen Center for Interface Research and Catalysis (ECRC)Friedrich-Alexander-Universität Erlangen-NürnbergEgerlandstraße 391058ErlangenGermany
| | - Peter Wasserscheid
- Institute of Chemical Reaction EngineeringFriedrich-Alexander-Universität Erlangen-NürnbergEgerlandstr. 391058ErlangenGermany
- Forschungszentrum Jülich„Helmholtz-Institute Erlangen-Nürnberg for Renewable Energies“ (IEK 11)Egerlandstr. 391058ErlangenGermany
| | - Jörg Libuda
- Interface Research and Catalysis, Erlangen Center for Interface Research and Catalysis (ECRC)Friedrich-Alexander-Universität Erlangen-NürnbergEgerlandstraße 391058ErlangenGermany
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Zhang X, Ma G, Shui L, Zhou G, Wang X. Direct Growth of Oxygen Vacancy-Enriched Co 3O 4 Nanosheets on Carbon Nanotubes for High-Performance Supercapacitors. ACS APPLIED MATERIALS & INTERFACES 2021; 13:4419-4428. [PMID: 33433991 DOI: 10.1021/acsami.0c21330] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Ultrathin Co3O4 nanosheets (NSs) with abundant oxygen vacancies on conductive carbon nanotube (CNT) nanocomposites (termed as Co3O4-NSs/CNTs) are easily achieved by an effective NaBH4-assisted cyanogel hydrolysis strategy under ambient conditions. The specific capacitance of Co3O4-NSs/CNTs with 5% CNT mass can reach 1280.4 F g-1 at 1 A g-1 and retain 112.5% even after 10 000 cycles, demonstrating very high electrochemical capability and stability. When assembled in the two-electrode Co3O4-NSs/CNTs-5%//reduced graphene oxide (rGO) system, a maximum specific energy density of 37.2 Wh kg-1 (160.2 W kg-1) is obtained at room temperature. Ultrathin structure of nanosheets, abundant oxygen vacancies, and the synergistic effect between Co3O4-NSs and CNTs are crucial factors for excellent electrochemical performance. Specifically, these characteristics favor rapid electron transfer, complete exposure of the active interface, and sufficient adsorption/desorption of electrolyte ions within the active material. This work gives insights into the efficient construction of two-dimensional hybrid electrodes with high performance for the new-generation energy storage system.
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Affiliation(s)
- Xiaoyu Zhang
- South China Academy of Advanced Optoelectronics & International Academy of Optoelectronics at Zhaoqing, South China Normal University, Guangdong 510631, P. R. China
| | - Ge Ma
- South China Academy of Advanced Optoelectronics & International Academy of Optoelectronics at Zhaoqing, South China Normal University, Guangdong 510631, P. R. China
| | - Lingling Shui
- South China Academy of Advanced Optoelectronics & International Academy of Optoelectronics at Zhaoqing, South China Normal University, Guangdong 510631, P. R. China
| | - Guofu Zhou
- South China Academy of Advanced Optoelectronics & International Academy of Optoelectronics at Zhaoqing, South China Normal University, Guangdong 510631, P. R. China
| | - Xin Wang
- South China Academy of Advanced Optoelectronics & International Academy of Optoelectronics at Zhaoqing, South China Normal University, Guangdong 510631, P. R. China
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Zhao H, Yuan ZY. Design Strategies of Transition-Metal Phosphate and Phosphonate Electrocatalysts for Energy-Related Reactions. CHEMSUSCHEM 2021; 14:130-149. [PMID: 33030810 DOI: 10.1002/cssc.202002103] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 10/05/2020] [Indexed: 06/11/2023]
Abstract
The key challenge to developing renewable energy conversion and storage devices lies in the exploration and rational engineering of cost-effective and highly efficient electrocatalysts for various energy-related electrochemical reactions. Transition-metal phosphates and phosphonates have shown remarkable performances for these reactions based on their unique physicochemical properties. Compared with transition-metal oxides, phosphate groups in transition-metal phosphates and phosphonates show flexible coordination with diverse orientations, making them an ideal platform for designing active electrocatalysts. Although numerous efforts have been spent on the development of transition-metal phosphate and phosphonate electrocatalysts, some urgent issues, such as low intrinsic catalytic efficiency and low electronic conductivity, have to be resolved in accordance with their applications. In this Review, we focus on the design strategies of highly efficient transition-metal phosphate and phosphonate electrocatalysts, with special emphasis on the tuning of transition-metal-center coordination environment, optimization of electronic structures, increase of catalytically active site densities, and construction of heterostructures. Guided by these strategies, recently developed transition-metal phosphate and phosphonate materials have exhibited excellent activity, selectivity, and stability for various energy-related electrocatalytic reactions, showing great potential for replacing noble-metal-based catalysts in next-generation advanced energy techniques. The existing challenges and prospects regarding these materials are also presented.
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Affiliation(s)
- Hui Zhao
- School of Materials Science and Engineering, Liaocheng University, Liaocheng, 252000, Shandong, P. R. China
| | - Zhong-Yong Yuan
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), School of Materials Science and Engineering, Nankai University, Tianjin, 300350, P. R. China
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Mondal B, Chattopadhyay S, Dey S, Mahammed A, Mittra K, Rana A, Gross Z, Dey A. Elucidation of Factors That Govern the 2e -/2H + vs 4e -/4H + Selectivity of Water Oxidation by a Cobalt Corrole. J Am Chem Soc 2020; 142:21040-21049. [PMID: 33259190 DOI: 10.1021/jacs.0c08654] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Considering the importance of water splitting as the best solution for clean and renewable energy, the worldwide efforts for development of increasingly active molecular water oxidation catalysts must be accompanied by studies that focus on elucidating the mode of actions and catalytic pathways. One crucial challenge remains the elucidation of the factors that determine the selectivity of water oxidation by the desired 4e-/4H+ pathway that leads to O2 rather than by 2e-/2H+ to H2O2. We now show that water oxidation with the cobalt-corrole CoBr8 as electrocatalyst affords H2O2 as the main product in homogeneous solutions, while heterogeneous water oxidation by the same catalyst leads exclusively to oxygen. Experimental and computation-based investigations of the species formed during the process uncover the formation of a Co(III)-superoxide intermediate and its preceding high-valent Co-oxyl complex. The competition between the base-catalyzed hydrolysis of Co(III)-hydroperoxide [Co(III)-OOH]- to release H2O2 and the electrochemical oxidation of the same to release O2 via [Co(III)-O2•]- is identified as the key step determining the selectivity of water oxidation.
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Affiliation(s)
- Biswajit Mondal
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, India
| | - Samir Chattopadhyay
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, India
| | - Subal Dey
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, India
| | - Atif Mahammed
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa 3200008, Israel
| | - Kaustuv Mittra
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, India
| | - Atanu Rana
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, India
| | - Zeev Gross
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa 3200008, Israel
| | - Abhishek Dey
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, India
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Ying H, Zhang C, Chen T, Zhao X, Li Z, Hao J. A new phosphonium-based ionic liquid to synthesize nickel metaphosphate for hydrogen evolution reaction. NANOTECHNOLOGY 2020; 31:505402. [PMID: 33006323 DOI: 10.1088/1361-6528/abb508] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The electrochemical hydrogen evolution reaction (HER) is a promising strategy for production of hydrogen; however, it is still restricted by appropriate efficient and low-cost electrocatalysts. Herein, for the first time, the n-octylammonium hypophosphite, a kind of protic ionic liquid (IL), was used as a new phosphorus source for the manufacture of nickel metaphosphate (Ni2P4O12) electrocatalysts. In contrast to traditional multi-step fabrication processes, the n-octylammonium hypophosphite acted as both reactant and solvent to synthesize Ni2P4O12 by a one-step calcination approach. The obtained Ni2P4O12 as an alkaline HER catalyst required a low overpotential of 116 mV at -10 mA cm-2 and a small Tafel slope of 97 mV dec-1, comparable to the majority of reported Ni-based materials and other phosphate catalysts. Furthermore, this catalyst exhibited robust stability with no distinct attenuation of current density after a long-term durability test in 1 M KOH. Therefore, this task-specific IL strategy with a simple reaction system, reducing the occurrence of side reactions, provided a new perspective on design of high-efficiency metaphosphate electrocatalysts.
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Affiliation(s)
- Hao Ying
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan 250100, People's Republic of China
| | - Chenyun Zhang
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan 250100, People's Republic of China
| | - Tingting Chen
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan 250100, People's Republic of China
| | - Xiaoning Zhao
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan 250100, People's Republic of China
| | - Zhonghao Li
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan 250100, People's Republic of China
| | - Jingcheng Hao
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan 250100, People's Republic of China
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Iqbal MZ, Faisal MM, Sulman M, Ali SR, Alzaid M. Facile synthesis of strontium oxide/polyaniline/graphene composite for the high-performance supercapattery devices. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114812] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Li Y, Sun H, Yang Y, Cao Y, Zhou W, Chai H. Controllable fabrication of NiV2O6 nanosphere as a high-performance flexible all-solid-state electrode material for supercapacitors. J Colloid Interface Sci 2020; 580:298-307. [DOI: 10.1016/j.jcis.2020.03.097] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 03/25/2020] [Accepted: 03/26/2020] [Indexed: 11/25/2022]
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Zhao Y, Lu Y, Chen L, Wei X, Zhu J, Zheng Y. Redox Dual-Cocatalyst-Modified CdS Double-Heterojunction Photocatalysts for Efficient Hydrogen Production. ACS APPLIED MATERIALS & INTERFACES 2020; 12:46073-46083. [PMID: 32929955 PMCID: PMC7584331 DOI: 10.1021/acsami.0c12790] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Cadmium sulfide (CdS) as one of the most common visible-light-responsive photocatalysts has been widely investigated for hydrogen generation. However, its low solar-hydrogen conversion efficiency caused by fast carrier recombination and poor catalytic activity hinders its practical applications. To address this issue, we develop a novel and highly efficient nickel-cobalt phosphide and phosphate cocatalyst-modified CdS (NiCoP/CdS/NiCoPi) photocatalyst for hydrogen evolution. The dual-cocatalysts were simultaneously deposited on CdS during one phosphating step by using sodium hypophosphate as the phosphorus source. After the loading of the dual-cocatalysts, the photocurrent of CdS significantly increased, while its electrical impedance and photoluminescence emission dramatically decreased, which indicates the enhancement of charge carrier separation. It was proposed that the NiCoP cocatalyst accepts electrons and promotes hydrogen evolution, while the NiCoPi cocatalyst donates electrons and accelerates the oxidation of sacrificial agents (e.g., lactic acid). Consequently, the visible-light-driven hydrogen evolution of this composite photocatalyst greatly improved. The dual-cocatalyst-modified CdS with a loading content of 5 mol % showed a high hydrogen evolution rate of 80.8 mmol·g-1·h-1, which was 202 times higher than that of bare CdS (0.4 mmol·g-1·h-1). This is the highest enhancement factor for metal phosphide-modified CdS photocatalysts. It also exhibited remarkable stability in a continuous photocatalytic test with a total reaction time of 24 h.
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Affiliation(s)
- Yi Zhao
- College
of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Yongfeng Lu
- College
of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Lu Chen
- College
of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Xiaofeng Wei
- National
Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Gongye Road 523, Fuzhou, Fujian 350002, China
| | - Jiefang Zhu
- Department
of Chemistry−Ångstrom Laboratory, Uppsala University, SE-751 21 Uppsala, Sweden
| | - Yuanhui Zheng
- College
of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
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Liu MR, Lin YP, Wang K, Chen S, Wang F, Zhou T. Hierarchical cobalt phenylphosphonate nanothorn flowers for enhanced electrocatalytic water oxidation at neutral pH. CHINESE JOURNAL OF CATALYSIS 2020. [DOI: 10.1016/s1872-2067(19)63513-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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