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Khan I, Khan S, Alwan BA, Jery AE, Shayan M, Wang S, Hassan SU, Rizwan M. Rational Design Strategy for High-Valence Metal-Driven Electronically Modulated High-Entropy Co-Ni-Fe-Cu-Mo (Oxy)Hydroxide as Superior Multifunctional Electrocatalysts. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2401034. [PMID: 38949312 DOI: 10.1002/smll.202401034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 06/14/2024] [Indexed: 07/02/2024]
Abstract
Creating durable and efficient multifunctional electrocatalysts capable of high current densities at low applied potentials is crucial for widespread industrial use in hydrogen production. Herein, a Co-Ni-Fe-Cu-Mo (oxy)hydroxide electrocatalyst with abundant grain boundaries on nickel foam using a scalable coating method followed by chemical precipitation is synthesized. This technique efficiently organizes hierarchical Co-Ni-Fe-Cu-Mo (oxy)hydroxide nanoparticles within ultrafine crystalline regions (<4 nm), enriched with numerous grain boundaries, enhancing catalytic site density and facilitating charge and mass transfer. The resulting catalyst, structured into nanosheets enriched with grain boundaries, exhibits superior electrocatalytic activity. It achieves a reduced overpotential of 199 mV at 10 mA cm2 current density with a Tafel slope of 48.8 mV dec1 in a 1 m KOH solution, maintaining stability over 72 h. Advanced analytical techniques reveal that incorporating high-valency copper and molybdenum elements significantly enhances lattice oxygen activation, attributed to weakened metal-oxygen bonds facilitating the lattice oxygen mechanism (LOM). Synchrotron radiation studies confirm a synergistic interaction among constituent elements. Furthermore, the developed high-entropy electrode demonstrates exceptional long-term stability under high current density in alkaline environments, showcasing the effectiveness of high-entropy strategies in advancing electrocatalytic materials for energy-related applications.
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Affiliation(s)
- Imran Khan
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, College of Chemistry & Materials Science, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua, 321004, P. R. China
- School of Physics and Electronics, Central South University, Changsha, 410083, P. R. China
| | - Salman Khan
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin, 150080, P. R. China
| | - Basem Al Alwan
- Department of Chemical Engineering, College of Engineering, King Khalid University, Abha, 61411, Saudi Arabia
| | - Atef El Jery
- Department of Chemical Engineering, College of Engineering, King Khalid University, Abha, 61411, Saudi Arabia
| | - Muhammad Shayan
- Department of Chemistry, Abdul Wali Khan University, Mardan, Khyber Pakhtunkhwa, 23200, Pakistan
| | - Shiliang Wang
- School of Physics and Electronics, Central South University, Changsha, 410083, P. R. China
| | - Sibt Ul Hassan
- School of Physics and Electronics, Central South University, Changsha, 410083, P. R. China
| | - Muhammad Rizwan
- School of Energy Science and Engineering, Central South University, Changsha, 410083, P. R. China
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2
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Tu YH, Huang HY, Yang YH, Lai CY, Tai CW, Hu CC. Comprehensive Study on the Ion-Selective Behavior of MnO x for Electrochemical Deionization. ACS APPLIED MATERIALS & INTERFACES 2023; 15:46812-46828. [PMID: 37773582 DOI: 10.1021/acsami.3c08271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/01/2023]
Abstract
Manganese oxide is an effective active material in several electrochemical systems, including batteries, supercapacitors, and electrochemical deionization (ECDI). This work conducts a comprehensive study on the ion-selective behavior of MnOx to fulfill the emptiness in the energy and environmental science field. Furthermore, it broadens the promising application of MnOx in the ion-selective ECDI system. We propose a time-dependent multimechanism ion-selective behavior with the following guidelines by utilizing a microfluidic cell and the electrochemical quartz crystal microbalance (EQCM) analysis. (1) Hydrated radius is the most critical factor for ions with the same valence, and MnOx tends to capture cations with a small hydrated radius. (2) The importance of charge density rises when comparing cations with different valences, and MnOx prefers to capture divalent cations with a strong electrostatic attraction at prolonged times. Under this circumstance, ion swapping may occur where divalent cations replace monovalent cations. (3) NH4+ triggers MnOx dissolution, leading to performance and stability decay. The EQCM evidence has directly verified the proposed mechanisms, and these data provide a novel but simple method to judge ion selectivity preference. The overall ion selectivity sequence is Ca2+ > Mg2+ > K+ > NH4+> Na+ > Li+ with the highest selectivity values of βCa//Li and βCa//Na around 3 at the deionization time = 10 min.
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Affiliation(s)
- Yi-Heng Tu
- Laboratory of Electrochemistry and Advanced Materials Department of Chemical Engineering, National Tsing Hua University Hsin-Chu 30013, Taiwan
| | - Hung-Yi Huang
- Laboratory of Electrochemistry and Advanced Materials Department of Chemical Engineering, National Tsing Hua University Hsin-Chu 30013, Taiwan
| | - Yu-Hsiang Yang
- Laboratory of Electrochemistry and Advanced Materials Department of Chemical Engineering, National Tsing Hua University Hsin-Chu 30013, Taiwan
| | - Chi-Yu Lai
- Laboratory of Electrochemistry and Advanced Materials Department of Chemical Engineering, National Tsing Hua University Hsin-Chu 30013, Taiwan
| | - Chen-Wei Tai
- Laboratory of Electrochemistry and Advanced Materials Department of Chemical Engineering, National Tsing Hua University Hsin-Chu 30013, Taiwan
| | - Chi-Chang Hu
- Laboratory of Electrochemistry and Advanced Materials Department of Chemical Engineering, National Tsing Hua University Hsin-Chu 30013, Taiwan
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3
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Lai CY, Lu YT, Jao WY, Chen HY, Hu CC. Near-neutral flexible zinc-air batteries with high power densities and long cycle life using chloride-based gel polymer electrolytes. Electrochem commun 2022. [DOI: 10.1016/j.elecom.2022.107240] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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4
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Kundu A, Mallick S, Ghora S, Raj CR. Advanced Oxygen Electrocatalyst for Air-Breathing Electrode in Zn-Air Batteries. ACS APPLIED MATERIALS & INTERFACES 2021; 13:40172-40199. [PMID: 34424683 DOI: 10.1021/acsami.1c08462] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The electrochemical reduction of oxygen to water and the evolution of oxygen from water are two important electrode reactions extensively studied for the development of electrochemical energy conversion and storage technologies based on oxygen electrocatalysis. The development of an inexpensive, highly active, and durable nonprecious-metal-based oxygen electrocatalyst is indispensable for emerging energy technologies, including anion exchange membrane fuel cells, metal-air batteries (MABs), water electrolyzers, etc. The activity of an oxygen electrocatalyst largely decides the overall energy storage performance of these devices. Although the catalytic activities of Pt and Ru/Ir-based catalysts toward an oxygen reduction reaction (ORR) and an oxygen evolution reaction (OER) are known, the high cost and lack of durability limit their extensive use for practical applications. This review article highlights the oxygen electrocatalytic activity of the emerging non-Pt and non-Ru/Ir oxygen electrocatalysts including transition-metal-based random alloys, intermetallics, metal-coordinated nitrogen-doped carbon (M-N-C), and transition metal phosphides, nitrides, etc., for the development of an air-breathing electrode for aqueous primary and secondary zinc-air batteries (ZABs). Rational surface and chemical engineering of these electrocatalysts is required to achieve the desired oxygen electrocatalytic activity. The surface engineering increases the number of active sites, whereas the chemical engineering enhances the intrinsic activity of the catalyst. The encapsulation or integration of the active catalyst with undoped or heteroatom-doped carbon nanostructures affords an enhanced durability to the active catalyst. In many cases, the synergistic effect between the heteroatom-doped carbon matrix and the active catalyst plays an important role in controlling the catalytic activity. The ORR activity of these catalysts is evaluated in terms of onset potential, number of electrons transferred, limiting current density, and durability. The bifunctional oxygen electrocatalytic activity and ZAB performance, on the other hand, are measured in terms of potential gap between the ORR and OER, ΔE = Ej10OER - E1/2ORR, specific capacity, peak power density, open circuit voltage, voltaic efficiency, and charge-discharge cycling stability. The nonprecious metal electrocatalyst-based ZABs are very promising and they deliver high power density, specific capacity, and round-trip efficiency. The active site for oxygen electrocatalysis and challenges associated with carbon support is briefly addressed. Despite the considerable progress made with the emerging electrocatalysts in recent years, several issues are yet to be addressed to achieve the commercial potential of rechargeable ZAB for practical applications.
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Affiliation(s)
- Aniruddha Kundu
- Functional Materials and Electrochemistry Lab, Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Sourav Mallick
- Functional Materials and Electrochemistry Lab, Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Santanu Ghora
- Functional Materials and Electrochemistry Lab, Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - C Retna Raj
- Functional Materials and Electrochemistry Lab, Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
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5
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Zhang L, Cai W, Bao N. Top-Level Design Strategy to Construct an Advanced High-Entropy Co-Cu-Fe-Mo (Oxy)Hydroxide Electrocatalyst for the Oxygen Evolution Reaction. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2100745. [PMID: 33876867 DOI: 10.1002/adma.202100745] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 03/01/2021] [Indexed: 05/26/2023]
Abstract
High-entropy materials are new-generation electrocatalysts for water splitting due to their excellent reactivity and highly tailorable electrochemical properties. Herein, a powerful top-level design strategy is reported to guide and design advanced high-entropy electrocatalysts by establishing reaction models (e.g., reaction energy barrier, conductivity, adsorption geometries for intermediates, and rate-determining step) to predict performance with the help of density functional theory (DFT) calculations. Accordingly, novel high-entropy Co-Cu-Fe-Mo (oxy)hydroxide electrocatalysts are fabricated by a new low-temperature electrochemical reconstruction method and their oxygen evolution reaction (OER) properties are thoroughly characterized. These as-prepared quaternary metallic (oxy)hydroxides present much better OER performance than ternary Co-Cu-Mo (oxy)hydroxide, Co-Fe-Mo (oxy)hydroxide, and other counterparts, and are demonstrated with a low overpotential of 199 mV at a current density of 10 mA cm-2 and a 48.8 mV dec-1 Tafel slope in 1 m KOH and excellent stability without decay over 72 h. The performance enhancement mechanism is also unraveled by synchrotron radiation. The work verifies the usefulness of high-entropy design and the great synergistic effect on OER performance by the incorporation of four elements, and also provides a new method for the construction of advanced high-entropy materials for energy conversion and storage.
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Affiliation(s)
- Lingjie Zhang
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, P. R. China
| | - Weiwei Cai
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, P. R. China
| | - Ningzhong Bao
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, Jiangsu, 210009, P. R. China
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6
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You TH, Hu CC, Chien HC, Yi TY. A new methodology for evaluating the performances of electrocatalysts for rechargeable Li-O2 batteries: (Ru-Sn)O2@graphene nanowalls/Ti electrodes as an example. Electrochem commun 2021. [DOI: 10.1016/j.elecom.2021.107009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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7
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Zhao CX, Liu JN, Wang J, Ren D, Li BQ, Zhang Q. Recent advances of noble-metal-free bifunctional oxygen reduction and evolution electrocatalysts. Chem Soc Rev 2021; 50:7745-7778. [DOI: 10.1039/d1cs00135c] [Citation(s) in RCA: 134] [Impact Index Per Article: 44.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Bifunctional oxygen reduction and evolution constitute the core processes for sustainable energy storage. The advances on noble-metal-free bifunctional oxygen electrocatalysts are reviewed.
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Affiliation(s)
- Chang-Xin Zhao
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering
- Tsinghua University
- Beijing
- China
| | - Jia-Ning Liu
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering
- Tsinghua University
- Beijing
- China
| | - Juan Wang
- Advanced Research Institute of Multidisciplinary Science
- Beijing Institute of Technology
- Beijing 100081
- China
- School of Materials Science and Engineering
| | - Ding Ren
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering
- Tsinghua University
- Beijing
- China
| | - Bo-Quan Li
- Advanced Research Institute of Multidisciplinary Science
- Beijing Institute of Technology
- Beijing 100081
- China
- School of Materials Science and Engineering
| | - Qiang Zhang
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering
- Tsinghua University
- Beijing
- China
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8
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Dongmo S, Kreissl JJA, Miyazaki K, Abe T, You TH, Hu CC, Schröder D. Reproducible and stable cycling performance data on secondary zinc oxygen batteries. Sci Data 2020; 7:395. [PMID: 33188206 PMCID: PMC7666131 DOI: 10.1038/s41597-020-00728-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 10/02/2020] [Indexed: 11/09/2022] Open
Abstract
Electrically rechargeable zinc oxygen batteries are promising energy storage devices. They appeal due to the abundance of zinc metal and their high energy density. Research on zinc oxygen batteries is currently focusing on the development of electrode materials. Since the progress is rapid and no state-of-the-art is agreed upon yet, it is difficult to benchmark their performance. This circumstance also complicates the use of the generated electrochemical data for model-based research – simulating the processes in the battery requires reliable performance data and material properties from experimental investigations. Herein we describe reproducible data on the cycling performance and durability of zinc oxygen batteries. We utilize anodes and gas diffusion electrodes (with the bifunctional catalysts Sr2CoO3Cl, Ru-Sn oxide, and Fe0.1Ni0.9Co2O4 with activated carbon) with low degradation during cycling, and present voltage data of current-dependent discharge and charge. All in all, we stimulate to reuse the data for parameter fitting in model-based work, and also to evaluate novel battery materials by preventing or minimizing side reactions with the testing protocol and setup utilized. Measurement(s) | battery cycling performance • Voltage • Electrical Current • cycling stability | Technology Type(s) | galvanostat • electrochemical analysis |
Machine-accessible metadata file describing the reported data: 10.6084/m9.figshare.13066070
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Affiliation(s)
- Saustin Dongmo
- Institute of Physical Chemistry, Justus-Liebig-University Giessen, Heinrich-Buff-Ring 17, D-35392, Giessen, Germany
| | - Julian Jakob Alexander Kreissl
- Institute of Physical Chemistry, Justus-Liebig-University Giessen, Heinrich-Buff-Ring 17, D-35392, Giessen, Germany.,Center for Materials Research (LaMa), Justus-Liebig-University Giessen, Heinrich-Buff-Ring 16, D-35392, Giessen, Germany
| | - Kohei Miyazaki
- Department of Energy & Hydrocarbon Chemistry, Kyoto University, Nishikyo-ku, 615-8510, Kyoto, Japan
| | - Takeshi Abe
- Department of Energy & Hydrocarbon Chemistry, Kyoto University, Nishikyo-ku, 615-8510, Kyoto, Japan
| | - Ting-Hsuan You
- Laboratory of Electrochemistry & Advanced Materials, Department of Chemical Engineering, National Tsing-Hua University, Kuang-Fu Road, 30013, Hsinchu, Taiwan
| | - Chi-Chang Hu
- Laboratory of Electrochemistry & Advanced Materials, Department of Chemical Engineering, National Tsing-Hua University, Kuang-Fu Road, 30013, Hsinchu, Taiwan
| | - Daniel Schröder
- Institute of Physical Chemistry, Justus-Liebig-University Giessen, Heinrich-Buff-Ring 17, D-35392, Giessen, Germany. .,Center for Materials Research (LaMa), Justus-Liebig-University Giessen, Heinrich-Buff-Ring 16, D-35392, Giessen, Germany.
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9
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Electrochemical activation and capacitance enhancement of expanded mesocarbon microbeads for high-voltage, symmetric supercapacitors. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136941] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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10
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Abstract
Zinc-air batteries (ZABs) have drawn widespread attention for their high energy densities, abundant raw materials, and low cost. However, the issues of metal dendrite formation and air electrode failure have been impeding the development and application of ZABs. Herein, we designed a novel dendrite-resistant ZAB system by adopting multiphase electrolytes to conduct the zinc deposition and the oxygen evolution reaction. The oxygen reduction reaction electrode is kept out of the zinc deposition region to extend the lifespan. The ZABs show an energy density of 1,050.9 Wh kg−1 based on the mass of zinc consumption, with an average Coulombic efficiency of ∼97.4% in 2,000 h discharge and charge cycling. More impressively, even if a short circuit occurs while charging, the battery can maintain the cycle performance without irreversible failure, which is conducive to the reliability of battery modules and its application in other energy storage/conversion devices. The ZAB displays an ultralong cycle life (10,000 cycles) at high current density The ZAB shows high energy densities and an average Coulombic efficiency of ∼97.4% Our ZABs compose energy storage module showing the peak power density of 280.8 mW cm−2 The ZAB has excellent cycle performance, and it can be recovered in time of short circuit
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11
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Wu X, Tang C, Cheng Y, Min X, Jiang SP, Wang S. Bifunctional Catalysts for Reversible Oxygen Evolution Reaction and Oxygen Reduction Reaction. Chemistry 2020; 26:3906-3929. [PMID: 32057147 DOI: 10.1002/chem.201905346] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 02/01/2020] [Indexed: 11/09/2022]
Abstract
Metal-air batteries (MABs) and reversible fuel cells (RFCs) rely on the bifunctional oxygen catalysts for oxygen evolution reaction (OER) and oxygen reduction reaction (ORR). Finding efficient bifunctional oxygen catalysts is the ultimate goal and it has attracted a great deal of attention. The dilemma is that a good ORR catalyst is not necessarily efficient for OER, and vice versa. Thus, the development of a new type of bifunctional oxygen catalysts should ensure that the catalysts exhibit high activity for both OER and ORR. Composites with multicomponents for active centers supported on highly conductive matrices could be able to meet the challenges and offering new opportunities. In this Review, the evolution of bifunctional catalysts is summarized and discussed aiming to deliver high-performance bifunctional catalysts with low overpotentials.
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Affiliation(s)
- Xing Wu
- School of Metallurgy and Environment, Central South University, Changsha, 410083, P. R. China.,National Engineering Technology Research Center for Control and Treatment of Heavy-metal Pollution, Changsha, 410083, P. R. China
| | - Chongjian Tang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, P. R. China.,National Engineering Technology Research Center for Control and Treatment of Heavy-metal Pollution, Changsha, 410083, P. R. China
| | - Yi Cheng
- School of Metallurgy and Environment, Central South University, Changsha, 410083, P. R. China.,National Engineering Technology Research Center for Control and Treatment of Heavy-metal Pollution, Changsha, 410083, P. R. China
| | - Xiaobo Min
- School of Metallurgy and Environment, Central South University, Changsha, 410083, P. R. China.,National Engineering Technology Research Center for Control and Treatment of Heavy-metal Pollution, Changsha, 410083, P. R. China
| | - San Ping Jiang
- Fuels and Energy Technology Institute & Western Australia School of Mines: Minerals, Energy and Chemical Engineering, Curtin University, Perth, WA, 6102, Australia
| | - Shuangyin Wang
- Laboratory for Graphene Materials and Devices, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
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12
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Qi H, Feng Y, Chi Z, Cui Y, Wang M, Liu J, Guo Z, Wang L, Feng S. In situ encapsulation of Co-based nanoparticles into nitrogen-doped carbon nanotubes-modified reduced graphene oxide as an air cathode for high-performance Zn-air batteries. NANOSCALE 2019; 11:21943-21952. [PMID: 31701977 DOI: 10.1039/c9nr07270e] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Exploring highly efficient catalysts for the oxygen reduction/evolution reaction (ORR/OER) is very important in rechargeable Zn-air batteries. N-doped carbon coupled with transition metal-based species are among the most promising cathode catalysts for Zn-air batteries. However, the aggregation of metal-based sites during the synthetic/cycling process is a serious drawback of these catalysts. Herein, in situ encapsulation of ultra-small Co/Co4N nanoparticles into N-doping carbon nanotubes (N-CNTs) anchored on reduced GO (Co/Co4N@N-CNTs/rGO) has been achieved through pyrolyzing a core-shell-structured ZIF-8@ZIF-67-modified GO (ZIF-8@ZIF-67/GO) precursor; the nanoparticles have been further applied as a bifunctional catalyst in Zn-air batteries. Benefitting from its uniform dispersion of Co-based particles, close contact of Co/Co4N species and N-CNTs, and high N content, Co/Co4N@N-CNTs/rGO shows outstanding catalytic activity/stability towards ORR and OER. Moreover, Zn volatilization and rGO introduction in Co/Co4N@N-CNTs/rGO can effectively promote the reactions of Zn-air cells. Hence, the Co/Co4N@N-CNTs/rGO-based conventional Zn-air battery exhibits a fantastic specific capacity of 783 mA h gZn-1, a continuous discharge platform over 6 days, a high-power density of ∼200 mW cm-2 and an ultra-long cycling life of 440 h with a small overpotential of ∼0.8 V. Moreover, a flexible Co/Co4N@N-CNTs/rGO-based Zn-air cell was also designed and revealed outstanding mechanical flexibility and good electrochemical performance, which suggests its potential application prospects in wearable electronic devices.
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Affiliation(s)
- Haocheng Qi
- State Key Laboratory of Eco-chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China.
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13
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Electrode Materials for Rechargeable Zinc-Ion and Zinc-Air Batteries: Current Status and Future Perspectives. ELECTROCHEM ENERGY R 2019. [DOI: 10.1007/s41918-019-00035-5] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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14
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Xu X, Liu F, Huang J, Luo W, Yu J, Fang X, Lebedeva OE, Wang X. The Influence of RuO
2
Distribution and Dispersion on the Reactivity of RuO
2
−SnO
2
Composite Oxide Catalysts Probed by CO Oxidation. ChemCatChem 2019. [DOI: 10.1002/cctc.201802095] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Xianglan Xu
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of ChemistryNanchang University Nanchang Jiangxi 330031 P.R. China
| | - Fuyan Liu
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of ChemistryNanchang University Nanchang Jiangxi 330031 P.R. China
| | - Jin Huang
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of ChemistryNanchang University Nanchang Jiangxi 330031 P.R. China
| | - Wenping Luo
- Ji'an Environment Monitoring Station Ji'an Jiangxi 343000 P.R. China
| | - Jing Yu
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of ChemistryNanchang University Nanchang Jiangxi 330031 P.R. China
| | - Xiuzhong Fang
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of ChemistryNanchang University Nanchang Jiangxi 330031 P.R. China
| | - Olga E. Lebedeva
- Belgorod State National Research University Pobeda Str., 85 Belgorod 308015 Russian Federation
| | - Xiang Wang
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of ChemistryNanchang University Nanchang Jiangxi 330031 P.R. China
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15
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Boosting oxygen evolution of single-atomic ruthenium through electronic coupling with cobalt-iron layered double hydroxides. Nat Commun 2019; 10:1711. [PMID: 30979899 PMCID: PMC6461613 DOI: 10.1038/s41467-019-09666-0] [Citation(s) in RCA: 240] [Impact Index Per Article: 48.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 03/15/2019] [Indexed: 11/08/2022] Open
Abstract
Single atom catalyst, which contains isolated metal atoms singly dispersed on supports, has great potential for achieving high activity and selectivity in hetero-catalysis and electrocatalysis. However, the activity and stability of single atoms and their interaction with support still remains a mystery. Here we show a stable single atomic ruthenium catalyst anchoring on the surface of cobalt iron layered double hydroxides, which possesses a strong electronic coupling between ruthenium and layered double hydroxides. With 0.45 wt.% ruthenium loading, the catalyst exhibits outstanding activity with overpotential 198 mV at the current density of 10 mA cm-2 and a small Tafel slope of 39 mV dec-1 for oxygen evolution reaction. By using operando X-ray absorption spectroscopy, it is disclosed that the isolated single atom ruthenium was kept under the oxidation states of 4+ even at high overpotential due to synergetic electron coupling, which endow exceptional electrocatalytic activity and stability simultaneously.
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16
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Zhao J, He Y, Chen Z, Zheng X, Han X, Rao D, Zhong C, Hu W, Deng Y. Engineering the Surface Metal Active Sites of Nickel Cobalt Oxide Nanoplates toward Enhanced Oxygen Electrocatalysis for Zn-Air Battery. ACS APPLIED MATERIALS & INTERFACES 2019; 11:4915-4921. [PMID: 30537808 DOI: 10.1021/acsami.8b16473] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Clarifying and controlling the surface catalytic active sites is at the heart of developing low-cost effective bifunctional oxygen catalysts to replace precious metals for metal-air batteries. Herein, a shape-control of hexagon nickel cobalt oxide spinel nanosheets was reported to engineer the surface metal active sites for enhanced electrocatalysis of oxygen evolution and oxygen reduction reactions (OER/ORR). Specifically, through simply tuning annealing temperature, different Ni3+/Ni2+ and Co3+/Co2+ atomic configurations on the nickel cobalt oxide surface were controllably synthesized. Electrochemical results show that the oxide treated at 250 °C (NCO-250) with the highest value of Ni3+/Ni2+ sites and the lowest value of Co3+/Co2+ sites exhibits superior OER/ORR activity in alkaline electrolytes and better discharge/charge performance in Zn-air batteries among all the samples. The optimized surface active site configuration of the NCO-250 sample leads to the optimal energy of adsorption, activation, and desorption for water molecules and oxygen species, thus promoting a high electrocatalytic activity. This work provides a strategy to design cost-effective, highly active, and durable electrocatalysts through regulating active sites on transition-metal surface for Zn-air battery and other advanced energy devices.
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Affiliation(s)
- Jun Zhao
- School of Materials Science and Engineering, Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin Key Laboratory of Composite and Functional Materials , Tianjin University , Tianjin 300072 , P. R. China
| | - Yu He
- School of Materials Science and Engineering, Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin Key Laboratory of Composite and Functional Materials , Tianjin University , Tianjin 300072 , P. R. China
| | - Zelin Chen
- School of Materials Science and Engineering, Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin Key Laboratory of Composite and Functional Materials , Tianjin University , Tianjin 300072 , P. R. China
| | - Xuerong Zheng
- School of Materials Science and Engineering, Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin Key Laboratory of Composite and Functional Materials , Tianjin University , Tianjin 300072 , P. R. China
| | - Xiaopeng Han
- School of Materials Science and Engineering, Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin Key Laboratory of Composite and Functional Materials , Tianjin University , Tianjin 300072 , P. R. China
| | - Dewei Rao
- School of Materials Science and Engineering , Jiangsu University , Zhenjiang 212013 , P. R. China
| | - Cheng Zhong
- School of Materials Science and Engineering, Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin Key Laboratory of Composite and Functional Materials , Tianjin University , Tianjin 300072 , P. R. China
| | - Wenbin Hu
- School of Materials Science and Engineering, Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin Key Laboratory of Composite and Functional Materials , Tianjin University , Tianjin 300072 , P. R. China
| | - Yida Deng
- School of Materials Science and Engineering, Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin Key Laboratory of Composite and Functional Materials , Tianjin University , Tianjin 300072 , P. R. China
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