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Wang W, Xu L, Ye R, Yang P, Zhu J, Jiang L, Wu X. Molybdenum and Vanadium-Codoped Cobalt Carbonate Nanosheets Deposited on Nickel Foam as a High-Efficient Bifunctional Catalyst for Overall Alkaline Water Splitting. Molecules 2024; 29:3591. [PMID: 39124995 PMCID: PMC11314115 DOI: 10.3390/molecules29153591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2024] [Revised: 07/25/2024] [Accepted: 07/28/2024] [Indexed: 08/12/2024] Open
Abstract
To address issues of global energy sustainability, it is essential to develop highly efficient bifunctional transition metal-based electrocatalysts to accelerate the kinetics of both the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER). Herein, the heterogeneous molybdenum and vanadium codoped cobalt carbonate nanosheets loaded on nickel foam (VMoCoCOx@NF) are fabricated by facile hydrothermal deposition. Firstly, the mole ratio of V/Mo/Co in the composite is optimized by response surface methodology (RSM). When the optimized composite serves as a bifunctional catalyst, the water-splitting current density achieves 10 mA cm-2 and 100 mA cm-2 at cell voltages of 1.54 V and 1.61 V in a 1.0 M KOH electrolyte with robust stability. Furthermore, characterization is carried out using field emission scanning electron microscopy-energy dispersive spectroscopy (FESEM-EDS), high-resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). Density functional theory (DFT) calculations reveal that the fabricated VMoCoCOx@NF catalyst synergistically decreases the Gibbs free energy of hydrogen and oxygen-containing intermediates, thus accelerating OER/HER catalytic kinetics. Benefiting from the concerted advantages of porous NF substrates and clustered VMoCoCOx nanosheets, the fabricated catalyst exhibits superior electrocatalytic performance. This work presents a novel approach to developing transition metal catalysts for overall water splitting.
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Affiliation(s)
- Wenxin Wang
- State Key Laboratory of Analytical Chemistry for Life Science, Nanjing University, Nanjing 210023, China
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Lulu Xu
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
- Key Laboratory of Mesoscopic Chemistry of MOE, Nanjing University, Nanjing 210023, China
| | - Ruilong Ye
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
- Key Laboratory of Mesoscopic Chemistry of MOE, Nanjing University, Nanjing 210023, China
| | - Peng Yang
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
- Key Laboratory of Mesoscopic Chemistry of MOE, Nanjing University, Nanjing 210023, China
| | - Junjie Zhu
- State Key Laboratory of Analytical Chemistry for Life Science, Nanjing University, Nanjing 210023, China
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Liping Jiang
- State Key Laboratory of Analytical Chemistry for Life Science, Nanjing University, Nanjing 210023, China
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Xingcai Wu
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
- Key Laboratory of Mesoscopic Chemistry of MOE, Nanjing University, Nanjing 210023, China
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Chang Y, Lu X, Wang S, Li X, Yuan Z, Bao J, Liu Y. Built-In Electric Field Boosted Overall Water Electrolysis at Large Current Density for the Heterogeneous Ir/CoMoO 4 Nanosheet Arrays. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2311763. [PMID: 38348916 DOI: 10.1002/smll.202311763] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Revised: 01/28/2024] [Indexed: 07/19/2024]
Abstract
Advanced bifunctional electrocatalysts are essential for propelling overall water splitting (OWS) progress. Herein, relying on the obvious difference in the work function of Ir (5.44 eV) and CoMoO4 (4.03 eV) and the constructed built-in electric field (BEF), an Ir/CoMoO4/NF heterogeneous catalyst, with ultrafine Ir nanoclusters (1.8 ± 0.2 nm) embedded in CoMoO4 nanosheet arrays on the surface of nickel foam skeleton, is reported. Impressively, the Ir/CoMoO4/NF shows remarkable electrocatalytic bifunctionality toward hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), especially at large current densities, requiring only 13 and 166 mV to deliver 10 and 1000 mA cm-2 for HER and 196 and 318 mV for OER. Furthermore, the Ir/CoMoO4/NF||Ir/CoMoO4/NF electrolyzer demands only 1.43 and 1.81 V to drive 10 and 1000 mA cm-2 for OWS. Systematical theoretical calculations and tests show that the formed BEF not only optimizes interfacial charge distribution and the Fermi level of both Ir and CoMoO4, but also reduces the Gibbs free energy (ΔGH*, from 0.25 to 0.03 eV) and activation energy (from 13.6 to 8.9 kJ mol-1) of HER, the energy barrier (from 3.47 to 1.56 eV) and activation energy (from 21.1 to 13.9 kJ mol-1) of OER, thereby contributing to the glorious electrocatalytic bifunctionality.
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Affiliation(s)
- Yanan Chang
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, China
| | - Xuyun Lu
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, China
| | - Shasha Wang
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, China
| | - Xiaoxuan Li
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, China
| | - Zeyu Yuan
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, China
| | - Jianchun Bao
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, China
| | - Ying Liu
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, China
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Yang G, Peng W, Chen Z, Li S, Han Q, Hu R, Yuan B. In Situ Construction of Biphasic Boride Electrocatalysts on Dealloyed Bulk Ni-Mo Alloy as Self-Supporting Electrode for Water Splitting at High Current Density. ACS APPLIED MATERIALS & INTERFACES 2024; 16:28578-28589. [PMID: 38797977 DOI: 10.1021/acsami.4c04157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
Nickel-molybdenum-boron (Ni-Mo-B)-based catalysts with biphasic interfaces are highly advantageous in bifunctional electrocatalytic activity in alkaline water-splitting. However, it remains an ongoing challenge to obtain porous Ni-Mo alloy substrates that provide stable adhesion to catalysts, ensuring the long-term performance of bifunctional self-supporting electrodes at a high current density. Herein, a porous Ni-Mo alloy substrate was effectively obtained by a cost-effective dealloying process on a commercial Ni-Mo alloy with high-energy crystal planes. Subsequently, the Mo2NiB2/Ni3B bifunctional catalyst was in situ synthesized on this substrate via boriding heat treatment, resulting in outstanding catalytic activity and stability. Density functional theory (DFT) calculations reveal that the abundant biphasic interfaces and surface-reconstructed sites of the Mo2NiB2/Ni3B catalyst can decrease the energy barriers for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), respectively. Thus, the designed self-supporting electrodes show bifunctional catalytic activity with overpotentials of 151 mV for HER and 260 mV for OER at a current density of 10 mA cm-2. Markedly, the assembled water electrolyzer can be driven up to 10 mA cm-2 at 1.64 V and maintain catalytic activity at a high current density of 1000 mA cm-2 for 100 h. The new strategy is expected to provide a low-cost scheme for designing self-supporting bifunctional electrodes with high activity and excellent stability and contribute to the development of hydrogen energy technology.
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Affiliation(s)
- Guangyao Yang
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, P.R. China
- Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials, Guangzhou 510640, P.R. China
| | - Weiliang Peng
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, P.R. China
- Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials, Guangzhou 510640, P.R. China
| | - Zhipeng Chen
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, P.R. China
- Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials, Guangzhou 510640, P.R. China
| | - Shaobo Li
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, P.R. China
- Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials, Guangzhou 510640, P.R. China
| | - Qiying Han
- Guangdong Province Waste Lithium Battery Clean Regeneration Engineering Technology Research Center, Zhaoqing 526116, P.R. China
- Guangdong Jinsheng New Energy Co., Ltd., Zhaoqing 526116, P.R. China
| | - Renzong Hu
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, P.R. China
- Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials, Guangzhou 510640, P.R. China
- Guangdong Province Waste Lithium Battery Clean Regeneration Engineering Technology Research Center, Zhaoqing 526116, P.R. China
| | - Bin Yuan
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, P.R. China
- Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials, Guangzhou 510640, P.R. China
- Guangdong Province Waste Lithium Battery Clean Regeneration Engineering Technology Research Center, Zhaoqing 526116, P.R. China
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Rout CS, Shinde PV, Patra A, Jeong SM. Recent Developments and Future Perspectives of Molybdenum Borides and MBenes. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2308178. [PMID: 38526182 DOI: 10.1002/advs.202308178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 03/11/2024] [Indexed: 03/26/2024]
Abstract
Metal borides have received a lot of attention recently as a potentially useful material for a wide range of applications. In particular, molybdenum-based borides and MBenes are of great significance, due to their remarkable properties like good electronic conductivity, considerable stability, high surface area, and environmental harmlessness. Therefore, in this article, the progress made in molybdenum-based borides and MBenes in recent years is reviewed. The first step in understanding these materials is to begin with an overview of their structural and electronic properties. Then synthetic technologies for the production of molybdenum borides, such as high-temperature/pressure methods, physical vapor deposition (PVD), chemical vapor deposition (CVD), element reaction route, molten salt-assisted, and selective etching methods are surveyed. Then, the critical performance of these materials in numerous applications like energy storage, catalysis, biosensors, biomedical devices, surface-enhanced Raman spectroscopy (SERS), and tribology and lubrication are summarized. The review concludes with an analysis of the current progress of these materials and provides perspectives for future research. Overall, this review will offer an insightful reference for the understanding molybdenum-based borides and their development in the future.
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Affiliation(s)
- Chandra Sekhar Rout
- Centre for Nano and Material Sciences, Jain Global Campus, Jain (Deemed-to-be University), Kanakapura Road, Bangalore, Karnataka, 562112, India
- Department of Chemical Engineering, Chungbuk National University, Cheongju, Chungbuk, 28644, Republic of Korea
| | - Pratik V Shinde
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, Mestre, 30172, Italy
| | - Abhinandan Patra
- Centre for Nano and Material Sciences, Jain Global Campus, Jain (Deemed-to-be University), Kanakapura Road, Bangalore, Karnataka, 562112, India
| | - Sang Mun Jeong
- Department of Chemical Engineering, Chungbuk National University, Cheongju, Chungbuk, 28644, Republic of Korea
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Lin S, Habib MA, Joni MH, Dristy SA, Mandavkar R, Jeong JH, Chung YU, Lee J. CoFeBP Micro Flowers (MFs) for Highly Efficient Hydrogen Evolution Reaction and Oxygen Evolution Reaction Electrocatalysts. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:698. [PMID: 38668192 PMCID: PMC11053626 DOI: 10.3390/nano14080698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 04/11/2024] [Accepted: 04/15/2024] [Indexed: 04/29/2024]
Abstract
Hydrogen is one of the most promising green energy alternatives due to its high gravimetric energy density, zero-carbon emissions, and other advantages. In this work, a CoFeBP micro-flower (MF) electrocatalyst is fabricated as an advanced water-splitting electrocatalyst by a hydrothermal approach for hydrogen production with the highly efficient hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). The fabrication process of the CoFeBP MF electrocatalyst is systematically optimized by thorough investigations on various hydrothermal synthesis and post-annealing parameters. The best optimized CoFeBP MF electrode demonstrates HER/OER overpotentials of 20 mV and 219 mV at 20 mA/cm2. The CoFeBP MFs also exhibit a low 2-electrode (2-E) cell voltage of 1.60 V at 50 mA/cm2, which is comparable to the benchmark electrodes of Pt/C and RuO2. The CoFeBP MFs demonstrate excellent 2-E stability of over 100 h operation under harsh industrial operational conditions at 60 °C in 6 M KOH at a high current density of 1000 mA/cm2. The flower-like morphology can offer a largely increased electrochemical active surface area (ECSA), and systematic post-annealing can lead to improved crystallinity in CoFeBP MFs.
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Affiliation(s)
| | | | | | | | | | - Jae-Hun Jeong
- Department of Electronic Engineering, College of Electronics and Information, Kwangwoon University, Nowon-gu, Seoul 01897, Republic of Korea; (S.L.); (M.A.H.); (M.H.J.); (S.A.D.); (R.M.)
| | - Young-Uk Chung
- Department of Electronic Engineering, College of Electronics and Information, Kwangwoon University, Nowon-gu, Seoul 01897, Republic of Korea; (S.L.); (M.A.H.); (M.H.J.); (S.A.D.); (R.M.)
| | - Jihoon Lee
- Department of Electronic Engineering, College of Electronics and Information, Kwangwoon University, Nowon-gu, Seoul 01897, Republic of Korea; (S.L.); (M.A.H.); (M.H.J.); (S.A.D.); (R.M.)
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6
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Chen S, Yao Y, Xu J, Chen J, Wang Z, Li P, Li Y. Hollow CoVO x/Ag nanoprism with tailored electronic structure for high efficiency oxygen evolution reaction. J Colloid Interface Sci 2024; 660:106-113. [PMID: 38241859 DOI: 10.1016/j.jcis.2024.01.073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 01/10/2024] [Accepted: 01/11/2024] [Indexed: 01/21/2024]
Abstract
Developing high-active and inexpensive electrocatalysts for oxygen evolution reaction (OER) is very important in the field of water splitting. The catalytic performance of electrocatalysts can be significantly improved by optimizing the electronic structure and designing suitable nanostructure. In this work, we represent the synthesis of hollow CoVOx/Ag-5 for OER. Due to the interaction of CoVOx and Ag nanoparticles, the electronic structure is optimized to improve the intrinsic catalytic activity. Additionally, the extrinsic catalytic activity of CoVOx/Ag is enhanced by the abundant active sites from the hollow structure. As a result, the CoVOx/Ag-5 demonstrates significantly enhanced OER catalytic activity with a low overpotential of 247 mV at 10 mA cm-2. In addition, it also exhibits excellent durability, without obvious attenuation in performance after continuous operation for 60 h. Furthermore, the catalyst can enable full water splitting with appropriate 100 % Faraday efficiency, demonstrating its practical application.
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Affiliation(s)
- Siru Chen
- School of Materials and Chemical Engineering, Center for Advanced Materials Research, Zhongyuan University of Technology, Zhengzhou 450007, China.
| | - Yingying Yao
- School of Materials and Chemical Engineering, Center for Advanced Materials Research, Zhongyuan University of Technology, Zhengzhou 450007, China
| | - Junlong Xu
- School of Materials and Chemical Engineering, Center for Advanced Materials Research, Zhongyuan University of Technology, Zhengzhou 450007, China
| | - Junyan Chen
- School of Materials and Chemical Engineering, Center for Advanced Materials Research, Zhongyuan University of Technology, Zhengzhou 450007, China
| | - Zhuo Wang
- School of Materials and Chemical Engineering, Center for Advanced Materials Research, Zhongyuan University of Technology, Zhengzhou 450007, China
| | - Pengyu Li
- School of Materials and Chemical Engineering, Center for Advanced Materials Research, Zhongyuan University of Technology, Zhengzhou 450007, China
| | - Yanqiang Li
- School of Materials Science and Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450045, China.
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7
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Cheng S, Wu W, Li L, Su Y, Jin B, Li Y, Yu Z, Gu R. Synthesis of P-(NiCo)CO 3 /TiO 2 /Ti Self-Supported Electrode with High Catalytic Activity and Stability for Hydrogen Evolution. SMALL METHODS 2024:e2301771. [PMID: 38501826 DOI: 10.1002/smtd.202301771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 02/24/2024] [Indexed: 03/20/2024]
Abstract
Hydrogen is considered an ideal clean energy due to its high mass-energy density, and only water is generated after combustion. Water electrolysis is a sustainable method of obtaining a usable amount of pure hydrogen among the various hydrogen production methods. However, its development is still limited by applying expensive noble metal catalysts. Here, the dissolution-recrystallization process of TiO2 nanotube arrays in water with the hydrothermal reaction of a typical nickel-cobalt hydroxide synthesis process followed by phosphating to prepare a self-supported electrode with (NiCo)CO3 /TiO2 heterostructure named P-(NiCo)CO3 /TiO2 /Ti electrode is combined. The electrode exhibits an ultra-low overpotential of 31 mV at 10 mA cm-2 with a Tafel slope of 46.2 mV dec-1 in 1 m KOH and maintained its stability after running for 500 h in 1 m KOH. The excellent catalytic activity can be attributed to the structure of nanotube arrays with high specific surface area, superhydrophilicity, and super aerophobicity on the electrode surface. In addition, the uniform (NiCo)CO3 /TiO2 heterostructure also accelerates the electron transfer on the electrode surface. Finally, DFT calculations demonstrate that phosphating also improves the ΔGH* and ΔGH2O of the electrode. The synthesis strategy also promotes the exploration of catalysts for other necessary electrocatalytic fields.
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Affiliation(s)
- Shaoan Cheng
- State Key Laboratory of Clean Energy Utilization, College of Energy Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Wei Wu
- State Key Laboratory of Clean Energy Utilization, College of Energy Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Longxin Li
- State Key Laboratory of Clean Energy Utilization, College of Energy Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Yuqing Su
- State Key Laboratory of Clean Energy Utilization, College of Energy Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Beichen Jin
- State Key Laboratory of Clean Energy Utilization, College of Energy Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Yangxi Li
- State Key Laboratory of Clean Energy Utilization, College of Energy Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Zhen Yu
- State Key Laboratory of Clean Energy Utilization, College of Energy Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Ruonan Gu
- State Key Laboratory of Clean Energy Utilization, College of Energy Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
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Habib MA, Burse S, Lin S, Mandavkar R, Joni MH, Jeong JH, Lee SS, Lee J. Dual-Functional Ru/Ni-B-P Electrocatalyst Toward Accelerated Water Electrolysis and High-Stability. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2307533. [PMID: 37940617 DOI: 10.1002/smll.202307533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 10/14/2023] [Indexed: 11/10/2023]
Abstract
Development of advanced electrocatalysts for the green hydrogen production by water electrolysis is an important task to reduce the climate and environmental issues as well as to meet the future energy demands. Herein, Ru/Ni-B-P sphere electrocatalyst is demonstrated by a combination of hydrothermal and soaking approaches, meeting the industrial requirement of low cell voltage with stable high-current operation. The Ru/Ni-B-P sphere catalyst demonstrates low overpotentials of 191 and 350 mV at 300 mA cm-2 with stable high current operation, ranking it as one of the best oxygen evolution reaction (OER) electrocatalysts. The bifunctional 2-E system demonstrates a low cell voltage of 2.49 V at 2000 mA cm-2 in 6 m KOH at 60 °C of harsh industrial operation condition. It also demonstrates outstanding stability with continuous 120 h (5 days) CA operation at 1000 mA cm-2. Further, the hybrid configuration of Ru/Ni-B-P || Pt/C being paired with the conventional benchmark electrode demonstrates a record low 2-E cell voltage of 2.40 V at 2000 mA cm-2 in 6 m KOH and excellent stability at high current of 1500 mA cm-2 under industrial operational condition.
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Affiliation(s)
- Md Ahasan Habib
- Department of Electronic Engineering, College of Electronics and Information, Kwangwoon University, Nowon-gu, Seoul, 01897, South Korea
| | - Shalmali Burse
- Department of Electronic Engineering, College of Electronics and Information, Kwangwoon University, Nowon-gu, Seoul, 01897, South Korea
| | - Shusen Lin
- Department of Electronic Engineering, College of Electronics and Information, Kwangwoon University, Nowon-gu, Seoul, 01897, South Korea
| | - Rutuja Mandavkar
- Department of Electronic Engineering, College of Electronics and Information, Kwangwoon University, Nowon-gu, Seoul, 01897, South Korea
| | - Mehedi Hasan Joni
- Department of Electronic Engineering, College of Electronics and Information, Kwangwoon University, Nowon-gu, Seoul, 01897, South Korea
| | - Jae-Hun Jeong
- Department of Electronic Engineering, College of Electronics and Information, Kwangwoon University, Nowon-gu, Seoul, 01897, South Korea
| | - Sang-Shin Lee
- Department of Electronic Engineering, College of Electronics and Information, Kwangwoon University, Nowon-gu, Seoul, 01897, South Korea
| | - Jihoon Lee
- Department of Electronic Engineering, College of Electronics and Information, Kwangwoon University, Nowon-gu, Seoul, 01897, South Korea
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9
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Xu Z, Zuo W, Yu Y, Liu J, Cheng G, Zhao P. Surface Reconstruction Facilitated by Fluorine Migration and Bimetallic Center in NiCo Bimetallic Fluoride Toward Oxygen Evolution Reaction. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2306758. [PMID: 38044293 PMCID: PMC10853698 DOI: 10.1002/advs.202306758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 11/06/2023] [Indexed: 12/05/2023]
Abstract
Oxygen evolution reaction (OER) is a critical anodic reaction of electrochemical water splitting, developing a high-efficiency electrocatalyst is essential. Transition metal-based catalysts are much more cost-effective if comparable activities can be achieved. Among them, fluorides are rarely reported due to their low aqueous stability of coordination and low electric conductivity. Herein, a NiCo bimetallic fluoride with good crystallinity is designed and constructed, and significantly enhanced catalytic activity and conductivity are observed. The inevitable oxidation of transition metal ions at high potential and the dissociation of F- are attributed to the low aqueous stability of coordination. The theoretical researches predicte that transition metal fluorides should have a strong tendency to electrochemical reconstruction. Therefore, based on the observations on their electrochemical behavior, high-resolution transmission electron microscopy, X-ray photoelectron spectroscopy, and bode plots, it is further demonstrated that surface reconstruction occurred during the electrochemical process, meanwhile a significant increase of electrochemically active area, which is created by F migration, are also directly observed. Additionally, DFT calculation results show that the electronic structure of the catalysts is modulated by the bimetallic centers, and this reconstruction helps optimizing the adsorption energy of oxygen-containing species and improves OER activity.
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Affiliation(s)
- Zhenhang Xu
- College of Chemistry and Molecular SciencesWuhan UniversityWuhanHubei430072P. R. China
| | - Wei Zuo
- College of Chemistry and Molecular SciencesWuhan UniversityWuhanHubei430072P. R. China
| | - Yueying Yu
- School of NursingWuhan UniversityWuhanHubei430072P. R. China
| | - Jinyan Liu
- Department of Biological and Chemical EngineeringZhixing College of Hubei UniversityWuhanHubei430011P. R. China
| | - Gongzhen Cheng
- College of Chemistry and Molecular SciencesWuhan UniversityWuhanHubei430072P. R. China
| | - Pingping Zhao
- School of NursingWuhan UniversityWuhanHubei430072P. R. China
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10
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Guo R, Shi J, Ma K, Zhu W, Yang H, Sheng M. Superhydrophilicity boron-doped cobalt phosphide nanosheets decorated carbon nanotube arrays self-supported electrode for overall water splitting. J Colloid Interface Sci 2023; 651:172-181. [PMID: 37542892 DOI: 10.1016/j.jcis.2023.07.176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 07/14/2023] [Accepted: 07/27/2023] [Indexed: 08/07/2023]
Abstract
Transition metal borides (TMBs) or phosphides (TMPs) have attracted great attention to the design of bifunctional electrocatalysts for energy storage. The superaerophobicity and superhydrophilicity of the catalytic electrode surface are crucial factors to determine the reaction process of the gas electrode. Herein, we report a self-supported electrode of carbon nanotube (CNTs) array grown on carbon cloth (CC) modulated together by boron-doped cobalt phosphide (CoP-B/CNTs/CC). The electrode requires the overpotential of 73.8 mV and 189.5 mV at the current density of ±10 mA cm-2 for hydrogen and oxygen evolution reactions in an alkaline electrolyte (1.0 M KOH), respectively, meanwhile maintaining outstanding long-term durability for more than 300 h. The excellent activity of CoP-B/CNTs/CC is attributed to boron doping regulating its electronic structure and further enriching active sites. The attractive stability of CoP-B/CNTs/CC is due to the unique geometric structure of the self-supported electrode. Furthermore, the superaerophobicity and superhydrophilicity of the electrode surface also accelerate the reaction process of the gas electrode. Expectedly, water splitting cells assembled using CoP-B/CNTs/CC electrodes as cathode and anode, respectively, require a cell voltage of 1.54 V at 10 mA cm-2, which is lower than that of the Pt/C/CC||RuO2/CC couple (1.69 V at 10 mA cm-2). Importantly, CoP-B/CNTs/CC||CoP-B/CNTs/CC achieve stable cell voltage under the step current changes (10 mA cm-2, 50 mA cm-2, and 100 mA cm-2) over 300 h. This work highlights a new path to understanding the effects of the static and dynamic behavior of bubbles on the surface of self-supporting electrodes on catalytic performance.
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Affiliation(s)
- Ruiqi Guo
- School of Iron and Steel, Soochow University, 215137 Suzhou, China
| | - Jialun Shi
- School of Iron and Steel, Soochow University, 215137 Suzhou, China
| | - Kaiwen Ma
- School of Iron and Steel, Soochow University, 215137 Suzhou, China
| | - Wenxiang Zhu
- Institue of Functional Nano & Soft Materials (FUNSOM), Soochow University, 215123 Suzhou, China
| | - Haiwei Yang
- Institue of Functional Nano & Soft Materials (FUNSOM), Soochow University, 215123 Suzhou, China
| | - Minqi Sheng
- School of Iron and Steel, Soochow University, 215137 Suzhou, China; State Key Laboratory of Advanced Special Steel, Shanghai Key Laboratory of Advanced Ferrometallurgy, Shanghai University, 200072 Shanghai, China.
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11
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Pang C, Xu W, Liang Y, Li Z, Wu S, Cui Z, Sun H, Jiang H, Zhu S. Improved hydrogen evolution performance of Ni-based nanoporous catalyst with Mo and B co-addition. J Colloid Interface Sci 2023; 656:262-269. [PMID: 37995396 DOI: 10.1016/j.jcis.2023.11.100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 11/14/2023] [Accepted: 11/16/2023] [Indexed: 11/25/2023]
Abstract
The exploration of efficient and stable noble-metal-free electrocatalysts for hydrogen evolution reaction (HER) is of great interest for the development of electrochemical hydrogen production technologies. Herein, nanoporous Ni-based catalyst with Mo and B co-addition (NiMoB) prepared by dealloying is reported as an efficient electrocatalysts for HER. The nanoporous NiMoB achieves an overpotential of 31 mV at 10 mA cm-2, along with exceptional catalytic stability in alkaline electrolyte. Density functional theory (DFT) calculations reveal that the incorporation of Mo and B can synergistically optimize the electronic structure and regulate the adsorption of HER intermediates on the Ni active site, thus accelerating the HER kinetics. This study provides a new perspective for the development of non-precious Ni-based catalysts towards efficient hydrogen energy conversion.
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Affiliation(s)
- Chongxing Pang
- School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Wence Xu
- School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Yanqin Liang
- School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China; Tianjin Key Laboratory of Composite and Functional Materials, Tianjin 300350, China
| | - Zhaoyang Li
- School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China; Tianjin Key Laboratory of Composite and Functional Materials, Tianjin 300350, China
| | - Shuilin Wu
- School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China; Tianjin Key Laboratory of Composite and Functional Materials, Tianjin 300350, China
| | - Zhenduo Cui
- School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Huaijun Sun
- Jiyang College of Zhejiang Agriculture and Forestry University, Zhuji 311800, China.
| | - Hui Jiang
- School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China; Tianjin Key Laboratory of Composite and Functional Materials, Tianjin 300350, China.
| | - Shengli Zhu
- School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China; Tianjin Key Laboratory of Composite and Functional Materials, Tianjin 300350, China.
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12
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Kim M, Min K, Ko D, Seong H, Eun Shim S, Baeck SH. Regulating the electronic structure of Ni 2P by one-step Co, N dual-doping for boosting electrocatalytic performance toward oxygen evolution reaction and urea oxidation reaction. J Colloid Interface Sci 2023; 650:1851-1861. [PMID: 37515975 DOI: 10.1016/j.jcis.2023.07.158] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 07/13/2023] [Accepted: 07/24/2023] [Indexed: 07/31/2023]
Abstract
The development of efficient bifunctional electrocatalysts for oxygen evolution reaction (OER) and urea oxidation reaction (UOR) is critical for hydrogen production and wastewater purification. In this work, we propose a facile synthetic method for Co and N dual-doped Ni2P directly grown on Ni foam (Co-Ni2P-N/NF) using hydrothermal and annealing process. Simultaneous Co and N dual-doping into Ni2P not only modifies the surface electronic structure, but also generates a multitude of active sites with high valence states, which are beneficial for improving electrocatalytic kinetics for both OER and UOR. As a result, the Co-Ni2P-N/NF catalyst exhibits a low overpotential of 329 mV to deliver a current density of 100 mA cm-2 for OER in alkaline solution, which is much lower than that of the state-of-the-art RuO2 electrocatalyst. In addition, the urea-assisted water oxidation process exhibits a significant reduction of approximately 163 mV in the required potential at 100 mA cm-2 compared to that of the OER, which highlights the remarkable potential of the prepared Co-Ni2P-N/NF electrocatalyst in facilitating the purification of wastewater and hydrogen production with significantly lower energy consumption.
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Affiliation(s)
- Minjung Kim
- Department of Chemistry and Chemical Engineering, Education and Research Center for Smart Energy Materials and Process, Inha University, Incheon 22212, Republic of Korea
| | - Kyeongseok Min
- Department of Chemistry and Chemical Engineering, Education and Research Center for Smart Energy Materials and Process, Inha University, Incheon 22212, Republic of Korea
| | - Dasol Ko
- Department of Chemistry and Chemical Engineering, Education and Research Center for Smart Energy Materials and Process, Inha University, Incheon 22212, Republic of Korea
| | - Haemin Seong
- Department of Chemistry and Chemical Engineering, Education and Research Center for Smart Energy Materials and Process, Inha University, Incheon 22212, Republic of Korea
| | - Sang Eun Shim
- Department of Chemistry and Chemical Engineering, Education and Research Center for Smart Energy Materials and Process, Inha University, Incheon 22212, Republic of Korea
| | - Sung-Hyeon Baeck
- Department of Chemistry and Chemical Engineering, Education and Research Center for Smart Energy Materials and Process, Inha University, Incheon 22212, Republic of Korea.
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13
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Wang X, Zhang K, Xie Y, Yu D, Tian H, Lou Y. MnO xH y-modified CoMoP/NF nanosheet arrays as hydrogen evolution reaction and oxygen evolution reaction bifunctional catalysts under alkaline conditions. Dalton Trans 2023; 52:15091-15100. [PMID: 37814596 DOI: 10.1039/d3dt02467a] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/11/2023]
Abstract
It is widely acknowledged that interface engineering strategies can significantly enhance the activity of catalysts. In this study, we developed a CoMoP nanoarray directly grown in situ on a nickel foam (NF) substrate, with the interface structure formed through the electrodeposition of MnOxHy. The resulting heterostructure MnOxHy/CoMoP/NF exhibited remarkable hydrogen evolution reaction (HER) activity, achieving overpotentials as low as 61 and 138 mV at 10 and 100 mA cm-2, respectively. Moreover, MnOxHy/CoMoP/NF demonstrated efficient oxygen evolution reaction (OER) activity with an overpotential of 330 mV at 100 mA cm-2. Remarkably, MnOxHy/CoMoP/NF maintained its catalytic properties and structural integrity even after working continuously for 20 h facilitating the HER at 10 mA cm-2 and the OER at 100 mA cm-2. The Tafel slopes of the HER and OER were determined to be as small as 14 and 55 mV dec-1, respectively, confirming that the coupled interface conferred fast reaction kinetics on the catalyst. When applied in overall water splitting, MnOxHy/CoMoP/NF delivered a voltage of 1.91 V at 100 mA cm-2 with excellent stability. This study demonstrated the feasibility of utilizing a simple electrodeposition technique to fabricate a heterogeneous structure with bifunctional catalytic activity, establishing a solid foundation for diverse industrial applications.
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Affiliation(s)
- Xuemin Wang
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, China.
| | - Ke Zhang
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, China.
| | - Yuhan Xie
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, China.
| | - Dehua Yu
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, China.
| | - Haoze Tian
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, China.
| | - Yongbing Lou
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, China.
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14
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Ge L, Yang H, Guan J, Ouyang B, Yu Q, Li H, Deng Y. Unveiling the Structural Self-Reconstruction and Identifying the Reactive Center of a V, Fe Co-Doped Cobalt Precatalyst toward Enhanced Overall Water Splitting by Operando Raman Spectroscopy. Inorg Chem 2023; 62:15664-15672. [PMID: 37682056 DOI: 10.1021/acs.inorgchem.3c02451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/09/2023]
Abstract
The development of efficient and stable bifunctional electrocatalysts based on non-noble metals for water electrolysis is both urgent and challenging. However, unresolved issues remain regarding the challenge of identifying the active phase and gaining a comprehensive understanding of its surface reconstruction and functionality throughout the reaction process. In this study, we have combined doping and heterostructure construction by a one-step electrodeposition and a subsequent activation treatment to synthesize Fe, V co-doped Co3O4/Co(OH)2 and Co/Co(OH)2 heterointerfaces (referred to as A-Co60Fe1.1V). These heterointerfaces, composed of Co/Co(OH)2 and Co3O4/Co(OH)2, are proposed to facilitate charge transfer process during catalysis. X-ray photoelectron spectroscopy (XPS) analysis demonstrates that the introduction of V and Fe dopants increases the valence state of Co centers in Co3O4 and Co(OH)2. Further operando Raman spectroscopy reveals that Co(OH)2 and Co3O4 with the high-valence Co centers remain stable during the hydrogen evolution reaction (HER) process. These high-valence Co centers are believed to promote the crucial water dissociation step and therefore enhance the overall HER catalysis. On the other hand, during the oxygen evolution reaction (OER), Fe, V co-doping leads to an earlier formation of the active CoOOH species, while Fe doping can further help stabilize the more reactive β-CoOOH species instead of the less reactive γ-CoOOH. As a result, the A-Co60Fe1.1V catalyst exhibits significantly improved catalytic activity for both HER and OER that it requires low overpotentials of 51 and 250 mV, respectively, to attain a current density of 10 mA cm-2. Moreover, when utilized as both the cathode and anode in alkaline water electrolysis, the A-Co60Fe1.1V catalyst can operate at a mere 1.54 V voltage while maintaining 10 mA cm-2, surpassing the majority of non-noble metal catalysts. Remarkably, it also exhibits stability for at least 40 h at ∼100 mA cm-2.
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Affiliation(s)
- Lihong Ge
- Institute for Energy Research, Jiangsu University, Zhenjiang 212013, China
| | - Hua Yang
- Institute for Energy Research, Jiangsu University, Zhenjiang 212013, China
| | - Jiexin Guan
- Institute for Energy Research, Jiangsu University, Zhenjiang 212013, China
| | - Bo Ouyang
- Department of Applied Physics and Institution of Energy and Microstructure, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Qing Yu
- Institute for Energy Research, Jiangsu University, Zhenjiang 212013, China
| | - Huaming Li
- Institute for Energy Research, Jiangsu University, Zhenjiang 212013, China
| | - Yilin Deng
- Institute for Energy Research, Jiangsu University, Zhenjiang 212013, China
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15
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Jiang L, Gu M, Wang H, Huang X, Gao A, Sun P, Liu X, Zhang X. Synergistically Regulating the Electronic Structure of CoS by Cation and Anion Dual-Doping for Efficient Overall Water Splitting. CHEMSUSCHEM 2023; 16:e202300592. [PMID: 37313584 DOI: 10.1002/cssc.202300592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 06/11/2023] [Accepted: 06/13/2023] [Indexed: 06/15/2023]
Abstract
Precisely regulating the electronic construction of the reactive center is an essential method to improve the electrocatalysis, but achieving efficient multifunctional characteristics remains a challenge. Herein, CoS sample dual-doped by Cu and F atoms, as bifunctional electrocatalyst, is designed and synthesized for water electrolysis. According to the experimental results, Cu atom doping can perform primary electronic adjustment and obtain bifunctional properties, and then the electronic structure is adjusted for the second time to achieve an optimal state by introducing F atom. Meanwhile, this dual-doping strategy will result in lattice distortion and expose more active sites. As expected, dual-doped Cu-F-CoS show the brilliant electrocatalytic activity, revealing ultralow overpotentials (59 mV for HER, 213 mV for OER) at 10 mA cm-2 in alkaline electrolyte. Besides, it also exhibits distinguished water electrolysis activity with cell voltage as low as 1.52 V at 10 mA cm-2 . Our work can provide an atomic-level perception for adjusting the electronic construction of reactive sites by means of dual-doping engineering and put forward a contributing path for the electrocatalysts with multifunctional designing.
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Affiliation(s)
- Ling Jiang
- Key Laboratory for Functional Molecular Solids of the Education Ministry of China, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, P. R. China
| | - Mingzheng Gu
- Key Laboratory for Functional Molecular Solids of the Education Ministry of China, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, P. R. China
| | - Hao Wang
- Key Laboratory for Functional Molecular Solids of the Education Ministry of China, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, P. R. China
| | - Xiaomin Huang
- Key Laboratory for Functional Molecular Solids of the Education Ministry of China, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, P. R. China
| | - An Gao
- Key Laboratory for Functional Molecular Solids of the Education Ministry of China, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, P. R. China
| | - Ping Sun
- Key Laboratory for Functional Molecular Solids of the Education Ministry of China, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, P. R. China
| | - Xudong Liu
- Key Laboratory for Functional Molecular Solids of the Education Ministry of China, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, P. R. China
| | - Xiaojun Zhang
- Key Laboratory for Functional Molecular Solids of the Education Ministry of China, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, P. R. China
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- Anhui Province International Research Center on Advanced Building Materials, Anhui Jianzhu University, Hefei, 230601, China
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16
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Chen Y, Sui T, Lyu C, Wu K, Wu J, Huang M, Hao J, Lau WM, Wan C, Pang D, Zheng J. Constructing abundant interfaces by decorating MoP quantum dots on CoP nanowires to induce electronic structure modulation for enhanced hydrogen evolution reaction. MATERIALS HORIZONS 2023; 10:3761-3772. [PMID: 37404093 DOI: 10.1039/d3mh00644a] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/06/2023]
Abstract
Interface engineering is a method of enhancing catalytic activity while maintaining a material's surface properties. Thus, we explored the interface effect mechanism via a hierarchical structure of MoP/CoP/Cu3P/CF. Remarkably, the heterostructure MoP/CoP/Cu3P/CF demonstrates an outstanding overpotential of 64.6 mV at 10 mA cm-2 with a Tafel slope of 68.2 mV dec-1 in 1 M KOH. DFT calculations indicate that the MoP/CoP interface in the catalyst exhibited the most favorable H* adsorption characteristics (-0.08 eV) compared to the pure phases of CoP (0.55 eV) and MoP (0.22 eV). This result can be attributed to the apparent modulation of electronic structures within the interface domains. Additionally, the CoCH/Cu(OH)2/CF‖MoP/CoP/Cu3P/CF electrolyzer demonstrates excellent overall water splitting performance, achieving 10 mA cm-2 in 1 M KOH solution with a modest voltage of only 1.53 V. This electronic structure adjustment via interface effects provides a new and efficient approach to prepare high-performance hydrogen production catalysts.
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Affiliation(s)
- Yuanyuan Chen
- Beijing Advanced Innovation Center for Materials Genome Engineering, Center for Green Innovation, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing, 100083, P. R. China.
| | - Tingting Sui
- Beijing Advanced Innovation Center for Materials Genome Engineering, Center for Green Innovation, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing, 100083, P. R. China.
| | - Chaojie Lyu
- Beijing Advanced Innovation Center for Materials Genome Engineering, Center for Green Innovation, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing, 100083, P. R. China.
| | - Kaili Wu
- Beijing Advanced Innovation Center for Materials Genome Engineering, Center for Green Innovation, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing, 100083, P. R. China.
| | - Jiwen Wu
- Beijing Advanced Innovation Center for Materials Genome Engineering, Center for Green Innovation, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing, 100083, P. R. China.
| | - Meifang Huang
- Beijing Advanced Innovation Center for Materials Genome Engineering, Center for Green Innovation, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing, 100083, P. R. China.
| | - Ju Hao
- Beijing Advanced Innovation Center for Materials Genome Engineering, Center for Green Innovation, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing, 100083, P. R. China.
| | - Woon-Ming Lau
- Beijing Advanced Innovation Center for Materials Genome Engineering, Center for Green Innovation, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing, 100083, P. R. China.
- Shunde Innovation School, University of Science and Technology Beijing, Foshan, 528399, P. R. China
| | - Chubin Wan
- Beijing Advanced Innovation Center for Materials Genome Engineering, Center for Green Innovation, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing, 100083, P. R. China.
| | - Dawei Pang
- Beijing Key Laboratory of Solid Microstructure and Properties, Department of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, P. R. China.
| | - Jinlong Zheng
- Beijing Advanced Innovation Center for Materials Genome Engineering, Center for Green Innovation, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing, 100083, P. R. China.
- Shunde Innovation School, University of Science and Technology Beijing, Foshan, 528399, P. R. China
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17
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Zhang Y, Xu H, Ma S. Iron-doped bimetallic boride Fe-Ni 2B/NF- x nanoparticles toward efficient oxygen evolution reaction at a large current density. Dalton Trans 2023; 52:9077-9083. [PMID: 37337804 DOI: 10.1039/d3dt00845b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2023]
Abstract
Transition metal borides are seen as potential candidates for oxygen evolution reaction (OER) electrocatalysts due to their superconductivity and rich surface-active sites, but monometallic borides only display generic OER catalytic performance. Hence, iron-doped bimetallic boride nanoparticles (Fe-Ni2B/NF-x) on Ni foam are reported and applied as superior OER electrocatalysts with high catalytic activities. Such bimetallic boride electrocatalysts require overpotentials of only 194 and 336 mV to afford current densities of 10 and 500 mA cm-2 toward the OER in 1 M KOH electrolyte, and Fe-Ni2B/NF-3 can retain this catalytic stability for at least 100 h at 1.456 V. The performance of the improved catalyst Fe-Ni2B/NF-3 matches the best nickel-based OER electrocatalysts reported so far. Analysis of X-ray photoelectron spectroscopy (XPS) and Gibbs free energy calculations show that Fe-doping essentially acts to modulate the electronic density of Ni2B and lower the free energy of O adsorption in the OER. The charge density differences and d-band theory proved that Fe sites have a high charge state and can be taken as catalytic sites for the OER. This proposed synthesis strategy provides a different view for preparing efficient bimetallic boride electrocatalysts.
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Affiliation(s)
- Yajuan Zhang
- College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730050, China.
| | - Hui Xu
- College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730050, China.
| | - Shengyue Ma
- College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730050, China.
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18
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Hu Y, Huang Z, Zhang Q, Taylor Isimjan T, Chu Y, Mu Y, Wu B, Huang Z, Yang X, Zeng L. Interfacial engineering of Co 5.47N/Mo 5N 6 nanosheets with rich active sites synergistically accelerates water dissociation kinetics for Pt-like hydrogen evolution. J Colloid Interface Sci 2023; 643:455-464. [PMID: 37088049 DOI: 10.1016/j.jcis.2023.04.028] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 03/14/2023] [Accepted: 04/07/2023] [Indexed: 04/25/2023]
Abstract
The development of highly efficient hydrogen evolution electrocatalysts with platinum-like activity requires precise control of active sites through interface engineering strategies. In this study, a heterostructured Co5.47N/Mo5N6 catalyst (CoMoNx) on carbon cloth (CC) was synthesized using a combination of dip-etching and vapor nitridation methods. The rough nanosheet surface of the catalyst with uniformly distributed elements exposes a large active surface area and provides abundant interface sites that serve as additional active sites. The CoMoNx was found to exhibit exceptional hydrogen evolution reaction (HER) activity with a low overpotential of 44 mV at 10 mA cm-2 and exceptional stability of 100 h in 1.0 M KOH. The CoMoNx(-)||RuO2(+) system requires only 1.81 V cell voltage to reach a current density of 200 mA cm-2, surpassing the majority of previously reported electrolyzers. Density functional theory (DFT) calculations reveal that the strong synergy between Co5.47N and Mo5N6 at the interface can significantly reduce the water dissociation energy barrier, thereby improving the kinetics of hydrogen evolution. Furthermore, the rough nanosheet architecture of the CoMoNx catalyst with abundant interstitial spaces and multi-channels enhances charge transport and reaction intermediate transportation, synergistically improving the performance of the HER for water splitting.
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Affiliation(s)
- Yan Hu
- Guangxi Key Laboratory of Low Carbon Energy Materials, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China; Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Zhiyang Huang
- Guangxi Key Laboratory of Low Carbon Energy Materials, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Qing Zhang
- Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Tayirjan Taylor Isimjan
- Guangxi Key Laboratory of Low Carbon Energy Materials, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Youqi Chu
- Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Yongbiao Mu
- Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Baoxin Wu
- Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Zebing Huang
- Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xiulin Yang
- Guangxi Key Laboratory of Low Carbon Energy Materials, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China.
| | - Lin Zeng
- Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen 518055, China.
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19
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Wang H, Feng T, Wang L, Hao W. Quantum dot-doped CeO x-NiB with modulated electron density as a highly efficient bifunctional electrocatalyst for water splitting. NANOSCALE 2023; 15:6321-6332. [PMID: 36912671 DOI: 10.1039/d2nr06561d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Development of economical, efficient and durable non-noble metal electrocatalysts for the hydrogen/oxygen evolution reaction (HER/OER) holds great promise, but still faces great challenges. Herein, a strategy of doping metal borides with rare earth metal oxides and introducing silicon carbide (SiC) quantum dots has been explored to develop efficient bifunctional electrocatalysts. A novel electrocatalyst consists of SiC quantum dot-decorated CeOx-NiB supported on nickel foam via a one-step mild electroless plating reaction (denoted as CeOx-NiB/SiC@NF). Notably, the modulated electron density of the CeOx-NiB/SiC@NF electrode significantly boosts the electrochemically active surface area and electron transfer, and optimizes the hydrogen/water absorption free energy, which delivers current densities of 50 mA cm-2 and 10 mA cm-2 at overpotentials of only 131 mV and 234 mV for the HER and the OER, respectively. The target electrode requires only 1.43 V to provide 10 mA cm-2 for overall water splitting in 1.0 M KOH. Moreover, the electrode also exhibits good stability and durability at the industrial-grade current density (0.5-1 A cm-2). This work provides a new idea for the development of efficient and durable non-precious metal catalysts.
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Affiliation(s)
- Huimin Wang
- School of Resource and Environmental Engineering, Shanghai Polytechnic University, Shanghai 201209, P. R. China.
| | - Tao Feng
- School of Resource and Environmental Engineering, Shanghai Polytechnic University, Shanghai 201209, P. R. China.
| | - Lincai Wang
- School of Resource and Environmental Engineering, Shanghai Polytechnic University, Shanghai 201209, P. R. China.
| | - Weiju Hao
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, P. R. China.
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20
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Wang L, Cheng Y, Xiong J, Zhao Z, Zhang D, Hu Z, Zhang H, Wu Q, Chen L. Sea urchin-like amorphous MgNiCo mixed metal hydroxide nanoarrays for efficient overall water splitting under industrial electrolytic conditions. Dalton Trans 2023; 52:3438-3448. [PMID: 36825845 DOI: 10.1039/d3dt00160a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
Exploring amorphous mixed transition metal hydroxide electrocatalysts with high performance and stability for overall water splitting is a difficult challenge under industrial electrolytic conditions. Herein, a sea urchin-like amorphous MgNiCo hydroxide (MgxNi1-xCo-OH, 0 < x < 1), self-assembled from nanowire arrays, is synthesized by the hydrothermal process. The synergistic effect between Mg and Ni/Co adjusts their crystal structure and morphology, which can improve the inherent activity and provide more active sites. Benefiting from the favorable structural features, Mg0.5Ni0.5Co-OH exhibits superior electrocatalytic oxygen and hydrogen evolution reaction (OER and HER) activity with a low overpotential of 277 and 110 mV (10 mA cm-2) in 1 M KOH at 25 °C. Furthermore, overpotentials of 239 and 197 mV are required to achieve a current density of 50 mA cm-2 for the OER and HER under simulated industrial electrolysis conditions (5 M KOH at 65 °C). Notably, Mg0.5Ni0.5Co-OH remarkably accelerates water splitting with a low voltage of 1.938 and 1.699 V for 50 mA cm-2 in 1 M KOH at 25 °C and 5 M KOH at 65 °C, respectively. This work presents a novel amorphous strategy to design and construct sea urchin-like mixed metal hydroxide bifunctional efficient electrocatalysts for industrial applications.
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Affiliation(s)
- Liping Wang
- Key Laboratory for Green Process of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, Xinjiang, China.
| | - Yikun Cheng
- Key Laboratory for Green Process of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, Xinjiang, China.
| | - Jiahao Xiong
- Key Laboratory for Green Process of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, Xinjiang, China.
| | - Zhiwen Zhao
- Key Laboratory for Green Process of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, Xinjiang, China.
| | - Dingbo Zhang
- Key Laboratory for Green Process of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, Xinjiang, China.
| | - Zhiyan Hu
- Key Laboratory for Green Process of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, Xinjiang, China.
| | - Haoyu Zhang
- Key Laboratory for Green Process of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, Xinjiang, China.
| | - Qin Wu
- Key Laboratory for Green Process of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, Xinjiang, China.
| | - Long Chen
- Key Laboratory for Green Process of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, Xinjiang, China.
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21
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Zhao Y, Zhao S, Chen J, Zhou Y, Zhao P, Dai R, Zhou W, Yang P, Zhang H, Chen A. Interface engineering of Fe 2P@CoMnP 4 heterostructured nanoarrays for efficient and stable overall water splitting. J Colloid Interface Sci 2023; 633:897-906. [PMID: 36508397 DOI: 10.1016/j.jcis.2022.12.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 11/17/2022] [Accepted: 12/01/2022] [Indexed: 12/12/2022]
Abstract
Electrocatalytic water splitting to generate high-quality hydrogen is an attractive renewable energy storage technology; however, it is still far from becoming a real-world application. In this study, we developed an effective and stable nickel foam-supported Fe2P@CoMnP4 heterostructure electrocatalyst for overall water splitting. As expected, the as-obtained Fe2P@CoMnP4/NF electrocatalyst exhibits superb bifunctional catalytic activity and only requires extremely low overpotentials of 53 and 249 mV to achieve a current density of 10 mA cm-2 for the hydrogen and oxygen evolution reactions, respectively. Moreover, a two-electrode electrolyzer assembled using Fe2P@CoMnP4/NF as electrodes operates at the low cell voltage of 1.54 V at 10 mA cm-2, showing excellent long-term stability for 140 h. Theoretical calculations indicate that the surface electronic structure is effectively adjusted by the generated heterointerfaces between the Fe2P and CoMnP4 in a two-phase matrix, resulting in a Gibbs free energy of hydrogen adsorption close to zero and high intrinsic activity. This innovative strategy is a valuable route for producing low-cost high-performance bifunctional electrocatalysts for water splitting.
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Affiliation(s)
- Yifan Zhao
- School of Materials and Energy, Yunnan University, Kunming 650091, PR China
| | - Shuwen Zhao
- School of Materials and Energy, Yunnan University, Kunming 650091, PR China
| | - Ji Chen
- School of Materials and Energy, Yunnan University, Kunming 650091, PR China
| | - Yao Zhou
- School of Engineering, The University of Edinburgh, South Bridge, Edinburgh EH8 9YL, UK.
| | - Peilong Zhao
- College of Chemistry, Zhengzhou University, Zhengzhou 450066, PR China
| | - Ruijie Dai
- School of Materials and Energy, Yunnan University, Kunming 650091, PR China
| | - Weijie Zhou
- School of Materials and Energy, Yunnan University, Kunming 650091, PR China
| | - Peizhi Yang
- Key Laboratory of Advanced Technique & Preparation for Renewable Energy Materials, Ministry of Education, Yunnan Normal University, Kunming 650092, PR China.
| | - Hua Zhang
- School of Materials and Energy, Yunnan University, Kunming 650091, PR China.
| | - Anran Chen
- School of Materials and Energy, Yunnan University, Kunming 650091, PR China.
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22
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Facet modulation of nickel-ruthenium nanocrystals for efficient electrocatalytic hydrogen evolution. J Colloid Interface Sci 2023; 633:275-283. [PMID: 36455435 DOI: 10.1016/j.jcis.2022.11.082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 11/13/2022] [Accepted: 11/17/2022] [Indexed: 11/25/2022]
Abstract
Constructing highly active electrocatalysts towards hydrogen evolution reaction (HER) in both alkaline and acidic media is essential for achieving a sustainable energy economy. Here, a facile ethylene glycol reduction strategy was employed to design the nickel-ruthenium nanocrystals (Ni-Ru NC) with an exposed highly active Ru (101) facet as an efficient electrocatalyst for HER. Testings show Ni-Ru NC outperforms the benchmark catalyst Pt/C by delivering extraordinarily low overpotentials of 21.1 and 70.9 mV to drive 10 mA cm-2 in acidic and alkaline solutions, respectively. The results of experimental and theoretical studies suggest that Ni can modulate the electronic structure of the Ru NC and optimize the hydrogen adsorption free energy on Ru's surface, which accelerates the charge transfer kinetics and enhances the HER performance. The study support the potential application of facet-modulated Ru-based HER eleccatalyst in an alkaline environment.
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23
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Fu C, Hao W, Fan J, Zhang Q, Guo Y, Fan J, Chen Z, Li G. Fabrication of Ultra-Durable and Flexible NiP x -Based Electrode toward High-Efficient Alkaline Seawater Splitting at Industrial Grade Current Density. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2205689. [PMID: 36585395 DOI: 10.1002/smll.202205689] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 12/08/2022] [Indexed: 06/17/2023]
Abstract
Designing nonprecious metal-based electrocatalysts to yield sustainable hydrogen energy by large-scale seawater electrolysis is challenging to global emissions of carbon neutrality and carbon peaking. Herein, a series of highly efficient, economical, and robust Ni-P-based nanoballs grown on the flexible and anti-corrosive hydrophobic asbestos (NiPx @HA) is synthesized by electroless plating at 25 °C toward alkaline simulated seawater splitting. On the basis of the strong chemical attachment between 2D layered substrate and nickel-rich components, robust hexagonal Ni5 P4 crystalline modification, and fast electron transfer capability, the overpotentials during hydrogen/oxygen evolution reaction (HER/OER) are 208 and 392 mV at 200 mA cm-2 , and the chronopotentiometric measurement at 500 mA cm-2 lasts for over 40 days. Additionally, the versatile strategy is broadly profitable for industrial applications and enables multi-elemental doping (iron/cobalt/molybdenum/boron/tungsten), flexible substrate employment (nickel foam/filter paper/hydrophilic cloth), and scalable synthesis (22 cm × 22 cm). Density functional theory (DFT) also reveals that the optimized performance is due to the fundamental effect of incorporating O-source into Ni5 P4 . Therefore, this work exhibits a complementary strategy in the construction of NiPx -based electrodes and offers bright opportunities to produce scalable hydrogen effectively and stably in alkaline corrosive electrolytes.
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Affiliation(s)
- Chengyu Fu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Weiju Hao
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Jinli Fan
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Qiang Zhang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Yanhui Guo
- Fudan University, Shanghai, 200433, China
| | - Jinchen Fan
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Ziliang Chen
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, China
| | - Guisheng Li
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, China
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24
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Salvò D, Mosconi D, Neyman A, Bar-Sadan M, Calvillo L, Granozzi G, Cattelan M, Agnoli S. Nanoneedles of Mixed Transition Metal Phosphides as Bifunctional Catalysts for Electrocatalytic Water Splitting in Alkaline Media. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:683. [PMID: 36839051 PMCID: PMC9963911 DOI: 10.3390/nano13040683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Revised: 02/02/2023] [Accepted: 02/03/2023] [Indexed: 06/18/2023]
Abstract
In this work, mixed Ni/Co and Ni/Fe metal phosphides with different metal ratios were synthesized through the phosphidization of high-surface-area hydroxides grown hydrothermally on carbon cloth. The materials were characterized by means of X-ray photoemission spectroscopy, X-ray diffraction, energy dispersive X-ray analysis, and electron microscopies. The electrocatalytic performance in the electrochemical water splitting was tested in alkaline media. With the aim of determining the chemical stability of the mixed phosphides and the possible changes undergone under catalytic conditions, the materials were characterized before and after the electrochemical tests. The best performances in the hydrogen evolution reaction were achieved when synergic interactions are established among the metal centers, as suggested by the outstanding performances (50 mV to achieve 10 mA/cm2) of materials containing the highest amount of ternary compounds, i.e., NiCoP and NiFeP. The best performances in the oxygen evolution reaction were reached by the Ni-Fe materials. Under these conditions, it was demonstrated that a strong oxidation of the surface and the dissolution of the phosphide/phosphate component takes place, with the consequent formation of the corresponding metal oxides and hydroxides.
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Affiliation(s)
- Davide Salvò
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy
- Avanzare Innovación Tecnológica S.L., Av. Lentiscares, 4-6, 26370 Navarrete, Spain
- Organometallic Molecular Materials (MATMO), Departamento de Química-Centro de Investigación en Síntesis Química (CISQ), Universidad de La Rioja, Madre de Dios, 53, 26006 Logroño, Spain
| | - Dario Mosconi
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Alevtina Neyman
- Department of Chemistry, Ben Gurion University, Beer Sheva 84105, Israel
| | - Maya Bar-Sadan
- Department of Chemistry, Ben Gurion University, Beer Sheva 84105, Israel
| | - Laura Calvillo
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Gaetano Granozzi
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Mattia Cattelan
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Stefano Agnoli
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy
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25
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Zhang Z, Lin X, Tang S, Xie H, Huang Q. Self-supported system of MoO2@Ni2P heterostructures as an efficient electrocatalyst for hydrogen evolution reactions in alkaline media. J Colloid Interface Sci 2023; 630:494-501. [DOI: 10.1016/j.jcis.2022.10.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 10/07/2022] [Accepted: 10/11/2022] [Indexed: 11/11/2022]
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26
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CuZr Metal Glass Powder as Electrocatalysts for Hydrogen and Oxygen Evolution Reactions. Catalysts 2022. [DOI: 10.3390/catal12111378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
For the practical application of water electrolysis, it is essential to develop cost-effective and high efficiency electrocatalysts for both hydrogen evolution reaction (HER) and oxygen evaluation reaction (OER). In this work, we applied CuZr metallic glass powder, after chemical dealloying treatment, as electrocatalysts. The as-prepared sample had both the increased specific area and optimized surface composition of an efficient catalyst. During the HER and OER processes, the dealloyed CuZr sample displayed overpotential of 195 mV and 310 mV at current density of 10 mA cm−2, respectively. A two-electrode water splitting cell, using the as-prepared CuZr sample, exhibited high stability towards a high current density of 500 mA cm−2, and lower overpotential, compared to a Pt/C//IrO2 cell, during the 10 mA cm−2 constant current density aging test.
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27
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Dual-phase synergy with electron redistribution during NiFe-LDH/Ni3S4 hollow nanoprisms for enhanced oxygen evolution. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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28
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Zhao M, Zhang S, Lin J, Hu W, Li CM. Synergic effect of Fe-doping and Ni3S2/MnS heterointerface to boost efficient oxygen evolution reaction. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141088] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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29
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Burse S, Kulkarni R, Mandavkar R, Habib MA, Lin S, Chung YU, Jeong JH, Lee J. Vanadium-Doped FeBP Microsphere Croissant for Significantly Enhanced Bi-Functional HER and OER Electrocatalyst. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3283. [PMID: 36234409 PMCID: PMC9565602 DOI: 10.3390/nano12193283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 09/13/2022] [Accepted: 09/14/2022] [Indexed: 06/16/2023]
Abstract
Ultra-fine hydrogen produced by electrochemical water splitting without carbon emission is a high-density energy carrier, which could gradually substitute the usage of traditional fossil fuels. The development of high-performance electrocatalysts at affordable costs is one of the major research priorities in order to achieve the large-scale implementation of a green hydrogen supply chain. In this work, the development of a vanadium-doped FeBP (V-FeBP) microsphere croissant (MSC) electrocatalyst is demonstrated to exhibit efficient bi-functional water splitting for the first time. The FeBP MSC electrode is synthesized by a hydrothermal approach along with the systematic control of growth parameters such as precursor concentration, reaction duration, reaction temperature and post-annealing, etc. Then, the heteroatom doping of vanadium is performed on the best FeBP MSC by a simple soaking approach. The best optimized V-FeBP MSC demonstrates the low HER and OER overpotentials of 52 and 180 mV at 50 mA/cm2 in 1 M KOH in a three-electrode system. In addition, the two-electrode system, i.e., V-FeBP || V-FeBP, demonstrates a comparable water-splitting performance to the benchmark electrodes of Pt/C || RuO2 in 1 M KOH. Similarly, exceptional performance is also observed in natural sea water. The 3D MSC flower-like structure provides a very high surface area that favors rapid mass/electron-transport pathways, which improves the electrocatalytic activity. Further, the V-FeBP electrode is examined in different pH solutions and in terms of its stability under industrial operational conditions at 60 °C in 6 M KOH, and it shows excellent stability.
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30
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Zheng HB, Wang YL, Xie JW, Gao PZ, Li DY, Rebrov EV, Qin H, Liu XP, Xiao HN. Enhanced Alkaline Oxygen Evolution Using Spin Polarization and Magnetic Heating Effects under an AC Magnetic Field. ACS APPLIED MATERIALS & INTERFACES 2022; 14:34627-34636. [PMID: 35862430 DOI: 10.1021/acsami.2c05977] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Renewable electricity from splitting water to produce hydrogen is a favorable technology to achieve carbon neutrality, but slow anodic oxygen evolution reaction (OER) kinetics limits its large-scale commercialization. Electron spin polarization and increasing the reaction temperature are considered as potential ways to promote alkaline OER. Here, it is reported that in the alkaline OER process under an AC magnetic field, a ferromagnetic ordered electrocatalyst can simultaneously act as a heater and a spin polarizer to achieve significant OER enhancement at a low current density. Moreover, its effect obviously precedes antiferromagnetic, ferrimagnetic, and diamagnetic electrocatalysts. In particular, the noncorrected overpotential of the ferromagnetic electrocatalyst Co at 10 mA cm-2 is reduced by a maximum of 36.6% to 243 mV at 4.320 mT. It is found that the magnetic heating effect is immediate, and more importantly, it is localized and hardly affects the temperature of the entire electrolytic cell. In addition, the spin pinning effect established on the ferromagnetic/paramagnetic interface generated during the reconstruction of the ferromagnetic electrocatalyst expands the ferromagnetic order of the paramagnetic layer. Also, the introduction of an external magnetic field further increases the orderly arrangement of spins, thereby promoting OER. This work provides a reference for the design of high-performance OER electrocatalysts under a magnetic field.
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Affiliation(s)
- Hang-Bo Zheng
- College of Materials Science and Engineering, Hunan University, Changsha, Hunan 410082, China
| | - Yuan-Li Wang
- College of Materials Science and Engineering, Hunan University, Changsha, Hunan 410082, China
| | - Jia-Wei Xie
- College of Materials Science and Engineering, Hunan University, Changsha, Hunan 410082, China
| | - Peng-Zhao Gao
- College of Materials Science and Engineering, Hunan University, Changsha, Hunan 410082, China
| | - Dong-Yun Li
- College of Materials Science and Engineering, China Jiliang University, Hangzhou 310016, China
| | - Evgeny V Rebrov
- School of Chemistry and Chemical Engineering, Queen's University Belfast, Belfast BT9 5AG, U.K
| | - Hang Qin
- College of Materials Science and Engineering, Hunan University, Changsha, Hunan 410082, China
| | - Xiao-Pan Liu
- College of Materials Science and Engineering, Hunan University, Changsha, Hunan 410082, China
| | - Han-Ning Xiao
- College of Materials Science and Engineering, Hunan University, Changsha, Hunan 410082, China
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31
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Xu Z, Zuo W, Mou Q, Cheng G, Zheng H, Zhao P. A yolk-shell structure construction for metal-organic frameworks toward an enhanced electrochemical water splitting catalysis. Dalton Trans 2022; 51:10298-10306. [PMID: 35749061 DOI: 10.1039/d2dt01111e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
NiFe-based transition metal catalysts are widely used in electrocatalysis, especially in the field of water splitting, due to their excellent electrochemical performance. Herein, a simple method was designed to synthesize a Ni MOF based on nickel foam and it was modified with Fe. After the introduction of Fe, the resulting material exhibits an obvious yolk-shell structure, which greatly increases the specific surface area and facilitates the construction of active sites. At the same time, the synergy between Ni and Fe is conducive to optimizing the electronic structure and effectively improving the poor stability of the MOF. As a result, the synthesized Ni MOF-Fe-2 only needs an overpotential of 229 mV to achieve the OER at a current density of 10 mA cm-2, which is better than most reported transition metal-based electrocatalysts. To our surprise, it showed extraordinary stability under the voltage used for water splitting.
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Affiliation(s)
- Zhenhang Xu
- College of Chemistry and Molecular Sciences, Wuhan University Wuhan, Hubei, 430072, P. R. China
| | - Wei Zuo
- College of Chemistry and Molecular Sciences, Wuhan University Wuhan, Hubei, 430072, P. R. China
| | - Qiuxiang Mou
- Research Center for Graphic Communication, Printing and Packaging, Wuhan University, Wuhan, Hubei, 430072, P. R. China.
| | - Gongzhen Cheng
- College of Chemistry and Molecular Sciences, Wuhan University Wuhan, Hubei, 430072, P. R. China
| | - Huaming Zheng
- School of Materials Science & Engineering, Wuhan Institute of Technology, Wuhan, 430073 Hubei, P.R. China.
| | - Pingping Zhao
- Research Center for Graphic Communication, Printing and Packaging, Wuhan University, Wuhan, Hubei, 430072, P. R. China.
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32
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Zhao S, Zhou W, Xiang X, Cao X, Chen N, Chen W, Yu X, Yan B, Gou H. Structure Determination, Mechanical Properties, Thermal Stability of Co 2MoB 4 and Fe 2MoB 4. MATERIALS 2022; 15:ma15093031. [PMID: 35591366 PMCID: PMC9102238 DOI: 10.3390/ma15093031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 04/13/2022] [Accepted: 04/20/2022] [Indexed: 02/05/2023]
Abstract
The precise determination of atomic position of materials is critical for understanding the relationship between structure and properties, especially for compounds with light elements of boron and single or multiple transition metals. In this work, the single crystal X-ray diffraction is employed to analyze the atomic positions of Co2MoB4 and Fe2MoB4 with a Ta3B4-type structure, and it is found that the lengths of B-B bonds connecting the two zig-zag boron chains are 1.86 Å and 1.87 Å, but previously unreported 1.4 Å. Co and Fe atoms occupy the same crystallographic position in lattice for the doped samples and the valence is close to the metal itself, and Co/Fe K-edge X-ray Absorption Fine Structure(XAFS) spectra of borides with different ratios of Co to Fe are collected to detect the local environment and chemical valence of Co and Fe. Vickers hardness and nano indentation measurements are performed, together with the Density Functional Theory (DFT) calculations. Finally, Co2MoB4 possess better thermal stability than Fe2MoB4 evaluated by Thermogravimetric Differential Thermal Analysis (TG-DTA) results.
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Affiliation(s)
- Shijing Zhao
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, China; (S.Z.); (W.Z.); (X.C.)
| | - Wenju Zhou
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, China; (S.Z.); (W.Z.); (X.C.)
| | - Xiaojun Xiang
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; (X.X.); (X.Y.)
| | - Xuyan Cao
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, China; (S.Z.); (W.Z.); (X.C.)
| | - Ning Chen
- Canadian Light Source, Saskatoon, SK S7N 2V3, Canada; (N.C.); (W.C.)
| | - Weifeng Chen
- Canadian Light Source, Saskatoon, SK S7N 2V3, Canada; (N.C.); (W.C.)
| | - Xiaohui Yu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; (X.X.); (X.Y.)
| | - Bingmin Yan
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, China; (S.Z.); (W.Z.); (X.C.)
- Correspondence: (B.Y.); (H.G.)
| | - Huiyang Gou
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, China; (S.Z.); (W.Z.); (X.C.)
- Correspondence: (B.Y.); (H.G.)
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33
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Saad A, Gao Y, Ramiere A, Chu T, Yasin G, Wu Y, Ibraheem S, Wang M, Guo H, Tsiakaras P, Cai X. Understanding the Surface Reconstruction on Ternary W x CoB x for Water Oxidation and Zinc-Air Battery Applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2201067. [PMID: 35347855 DOI: 10.1002/smll.202201067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 03/04/2022] [Indexed: 06/14/2023]
Abstract
Here, the synthesis of a series of pure phase metal borides is reported, including WB, CoB, WCoB, and W2 CoB2 , and their surface reconstruction is studied under the electrochemical activation in alkaline solution. A cyclic voltammetric activation is found to enhance the activity of the CoB and W2 CoB2 precatalysts due to the transformation of their surfaces into the amorphous CoOOH layer with a thickness of 3-4 nm. However, such surface transformation does not happen on the WB and WCoB due to their superior structure stability under the applied voltage, highlighting the importance of metal components for the surface reconstruction process. It is found that, compared with CoB, the W2 CoB2 surface shows a quicker reconstruction with a larger active surface area due to the selective leaching of the W from its surface. In the meantime, the metallic W2 CoB2 core underneath the CoOOH layer shows a better promotion of its oxygen evolution reaction (OER) performance than CoB. Therefore, the ternary W2 CoB2 shows better OER performance than the CoB, as well as the WB and WCoB. It is also found that the mixture of W2 CoB2 with Pt/C as the catalysts in air electrode for rechargeable Zn-air battery (ZAB), shows better performance than the IrO2 -Pt/C couple-based ZAB.
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Affiliation(s)
- Ali Saad
- Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, P. R. China
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Yang Gao
- College of Materials Science and Engineering, Hunan Province Key Laboratory for Advanced Carbon Materials and Applied Technology, Hunan University, Changsha, 410082, P. R. China
| | - Aymeric Ramiere
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Tianzhi Chu
- Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Ghulam Yasin
- Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Yanyan Wu
- Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Shumaila Ibraheem
- Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Miao Wang
- Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Haichuan Guo
- Ningbo Institute of Materials Technology & Engineering Chinese Academy of Sciences, Ningbo, 315201, China
| | - Panagiotis Tsiakaras
- Laboratory of Alternative Energy Conversion Systems, Department of Mechanical Engineering, School of Engineering, University of Thessaly, 1 Sekeri Str., Pedion Areos, 38834, Greece
- Laboratory of Materials and Devices for Clean Energy, Department of Technology of Electrochemical Processes, Ural Federal University, 19 Mira Str., Yekaterinburg, 620002, Russian Federation
- Laboratory of Electrochemical Devices based on Solid Oxide Proton Electrolytes, Institute of High Temperature Electrochemistry (RAS), Yekaterinburg, 620990, Russian Federation
| | - Xingke Cai
- Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, P. R. China
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