1
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Zhang Y, Zhang B, Tong L, Xing J, Fu X. Computational screening toward transition metal doped vanadium carbides in different crystal planes for efficient hydrogen evolution: a first-principles study. Phys Chem Chem Phys 2023; 25:4724-4731. [PMID: 36661895 DOI: 10.1039/d2cp05207e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
In the present work, we evaluated the hydrogen evolution reaction (HER) performance of transition metal (Co, Fe, Ni, Mn, and Mo) doped vanadium carbides (VC). In addition, the doping atoms were screened separately on the (100), (110) and (111) crystal planes to analyze the differences in HER activities. Among all the calculated models, Mn-VC(100) exhibited the best catalytic hydrogen evolution performance with a Gibbs free energy for hydrogen adsorption (ΔGH*) of 0.0012 eV. Doping Mn greatly improved the HER performance of VC(100) by enhancing the adsorption of hydrogen on the catalyst surface. The analysis of the electronic density of states and charge transfer confirmed that doping transition metal atoms into the surfaces of the VC model successfully optimized the electronic structure and promoted catalytic reaction kinetics. Besides, the relationship between the catalytic activity and pH value of different models was considered, and doping Co atoms on the (100) crystal plane could effectively modify the pH value range applicable for the efficient HER. Interestingly, even if the same metal atoms were doped, various active sites of VC models exhibited different catalytic performances due to disparate exposed crystal planes and pH values. This indicates that the main exposed crystal surfaces and the pH range of application need to be considered when selecting the appropriate doping element for the catalyst.
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Affiliation(s)
- Yu Zhang
- State Key Laboratory of Information Photonics and Optical Communications, and School of Integrated Circuits, Beijing University of Posts and Telecommunications, Beijing 100876, P. R. China.
| | - Bo Zhang
- State Key Laboratory of Information Photonics and Optical Communications, and School of Integrated Circuits, Beijing University of Posts and Telecommunications, Beijing 100876, P. R. China.
| | - Likai Tong
- State Key Laboratory of Information Photonics and Optical Communications, and School of Integrated Circuits, Beijing University of Posts and Telecommunications, Beijing 100876, P. R. China.
| | - Junjie Xing
- State Key Laboratory of Information Photonics and Optical Communications, and School of Integrated Circuits, Beijing University of Posts and Telecommunications, Beijing 100876, P. R. China.
| | - Xiuli Fu
- State Key Laboratory of Information Photonics and Optical Communications, and School of Integrated Circuits, Beijing University of Posts and Telecommunications, Beijing 100876, P. R. China.
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2
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An J, Wang M, Jia Y, Chen Y, Jiao S. Facile preparation of metallic vanadium from consumable V2CO solid solution by molten salt electrolysis. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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3
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Zhang Q, Lei H, Guo H, Wang Y, Gao Y, Zhang W, Cao R. Through-Space Electrostatic Effects of Positively Charged Substituents on the Hydrogen Evolution Reaction. CHEMSUSCHEM 2022; 15:e202200086. [PMID: 35156337 DOI: 10.1002/cssc.202200086] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 02/09/2022] [Indexed: 06/14/2023]
Abstract
Elucidating the effects of various structural components on energy-related small molecule activation is of fundamental and practical significance. Herein the inhibition effect of positively charged substituents on the hydrogen evolution reaction (HER) was reported. With the use of Cu porphyrins 1-5 containing different numbers and locations of positively charged substituents, it was demonstrated that their electrocatalytic HER activities significantly decreased when more cationic units were located close to the Cu ion: the icat /ip (icat is the catalytic peak current, ip is the one-electron reduction peak current) value decreased from 38 with zero cationic unit to 15 with four closely located cationic units. Inspired by this result, Cu porphyrin 6, with four meso-phenyl groups each bearing a negatively charged para-sulfonic substituent, was designed. With these anionic units, 6 outperformed the other Cu porphyrins for electrocatalytic HER under the same conditions.
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Affiliation(s)
- Qingxin Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China
| | - Haitao Lei
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China
| | - Hongbo Guo
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China
| | - Yabo Wang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China
| | - Yimei Gao
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China
| | - Wei Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China
| | - Rui Cao
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China
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Wang N, Bo X, Zhou M. Single-Step and Room-Temperature Synthesis of Laser-Induced Pt/VC Nanocomposites as Effective Bifunctional Electrocatalysts for Hydrogen Evolution and Oxygen Evolution Reactions. ACS APPLIED MATERIALS & INTERFACES 2022; 14:23332-23341. [PMID: 35537035 DOI: 10.1021/acsami.2c00747] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The development of cost-effective Pt-based electrocatalysts is of great scientific and industrial significance for improving the electrocatalytic activity of hydrogen evolution (HER) and oxygen evolution (OER) reactions for overall water splitting. In this work, unlike traditional furnace pyrolysis, we report the rapid and single-step room-temperature synthesis of Pt/VC nanocomposites with a three-dimensional (3D) network porous structure by laser irradiation technology. The resultant Pt-based composite (Pt/VC-2.84) could be applied to HER under different pH conditions. In particular, the content of Pt in Pt/VC-2.84 is only 2.84 wt %, which is far lower than that in the advanced HER electrocatalyst with the Pt content of 20 wt % (commercial 20 wt % Pt/C). In addition, Pt/VC-2.84 exhibits a boosted higher OER activity and stability than RuO2 in an alkaline medium. Most importantly, electrocatalytic results reflect that Pt/VC-2.84 reveals superior activity and stability toward overall water splitting.
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Affiliation(s)
- Nan Wang
- Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province, Analysis and Testing Center, Department of Chemistry, Northeast Normal University, Changchun 130024, Jilin, China
| | - Xiangjie Bo
- Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province, Analysis and Testing Center, Department of Chemistry, Northeast Normal University, Changchun 130024, Jilin, China
| | - Ming Zhou
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, National & Local United Engineering Laboratory for Power Batteries, Northeast Normal University, Changchun 130024, Jilin, China
- Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province, Analysis and Testing Center, Department of Chemistry, Northeast Normal University, Changchun 130024, Jilin, China
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Wang YM, Cai J, Wang QY, Li Y, Han Z, Li S, Gong CH, Wang S, Zang SQ, Mak TCW. Electropolymerization of Metal Clusters Establishing a Versatile Platform for Enhanced Catalysis Performance. Angew Chem Int Ed Engl 2022; 61:e202114538. [PMID: 34981633 DOI: 10.1002/anie.202114538] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Indexed: 12/13/2022]
Abstract
Atomically precise metal clusters are attractive as highly efficient catalysts, but suffer from continuous efficiency deactivation in the catalytic process. Here, we report the development of an efficient strategy that enhances catalytic performance by electropolymerization (EP) of metal clusters into hybrid materials. Based on carbazole ligand protection, three polymerized metal-cluster hybrid materials, namely Poly-Cu14 cba, Poly-Cu6 Au6 cbz and Poly-Cu6 Ag4 cbz, were prepared. Compared with isolated metal clusters, metal clusters immobilizing on a biscarbazole network after EP significantly improved their electron-transfer ability and long-term recyclability, resulting in higher catalytic performance. As a proof-of-concept, Poly-Cu14 cba was evaluated as an electrocatalyst for reducing nitrate (NO3 - ) to ammonia (NH3 ), which exhibited ≈4-fold NH3 yield rate and ≈2-fold Faraday efficiency enhancement compared to that of Cu14 cba with good durability. Similarly, Poly-Cu6 Au6 cbz showed 10 times higher photocatalytic efficiency towards chemical warfare simulants degradation than the cluster counterpart.
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Affiliation(s)
- Yi-Man Wang
- Henan Key Laboratory of Crystalline Molecular Functional Materials, Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
| | - Jinmeng Cai
- Henan Key Laboratory of Crystalline Molecular Functional Materials, Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
| | - Qian-You Wang
- Henan Key Laboratory of Crystalline Molecular Functional Materials, Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
| | - Yao Li
- Henan Key Laboratory of Crystalline Molecular Functional Materials, Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
| | - Zhen Han
- Henan Key Laboratory of Crystalline Molecular Functional Materials, Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
| | - Si Li
- Henan Key Laboratory of Crystalline Molecular Functional Materials, Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
| | - Chun-Hua Gong
- Henan Key Laboratory of Crystalline Molecular Functional Materials, Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
| | - Shan Wang
- Henan Key Laboratory of Crystalline Molecular Functional Materials, Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
| | - Shuang-Quan Zang
- Henan Key Laboratory of Crystalline Molecular Functional Materials, Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
| | - Thomas C W Mak
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
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Liu H, Sun J, Xu Z, Zhou W, Han C, Yang G, Shan Y. Ru nanoparticles decorated Ni-V2NO heterostructures in carbon nanofibers as efficient electrocatalysts for hydrogen evolution reaction. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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7
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Wang Y, Cai J, Wang Q, Li Y, Han Z, Li S, Gong C, Wang S, Zang S, Mak TCW. Electropolymerization of Metal Clusters Establishing a Versatile Platform for Enhanced Catalysis Performance. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202114538] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Yi‐Man Wang
- Henan Key Laboratory of Crystalline Molecular Functional Materials Green Catalysis Center, and College of Chemistry Zhengzhou University Zhengzhou 450001 China
| | - Jinmeng Cai
- Henan Key Laboratory of Crystalline Molecular Functional Materials Green Catalysis Center, and College of Chemistry Zhengzhou University Zhengzhou 450001 China
| | - Qian‐You Wang
- Henan Key Laboratory of Crystalline Molecular Functional Materials Green Catalysis Center, and College of Chemistry Zhengzhou University Zhengzhou 450001 China
| | - Yao Li
- Henan Key Laboratory of Crystalline Molecular Functional Materials Green Catalysis Center, and College of Chemistry Zhengzhou University Zhengzhou 450001 China
| | - Zhen Han
- Henan Key Laboratory of Crystalline Molecular Functional Materials Green Catalysis Center, and College of Chemistry Zhengzhou University Zhengzhou 450001 China
| | - Si Li
- Henan Key Laboratory of Crystalline Molecular Functional Materials Green Catalysis Center, and College of Chemistry Zhengzhou University Zhengzhou 450001 China
| | - Chun‐Hua Gong
- Henan Key Laboratory of Crystalline Molecular Functional Materials Green Catalysis Center, and College of Chemistry Zhengzhou University Zhengzhou 450001 China
| | - Shan Wang
- Henan Key Laboratory of Crystalline Molecular Functional Materials Green Catalysis Center, and College of Chemistry Zhengzhou University Zhengzhou 450001 China
| | - Shuang‐Quan Zang
- Henan Key Laboratory of Crystalline Molecular Functional Materials Green Catalysis Center, and College of Chemistry Zhengzhou University Zhengzhou 450001 China
| | - Thomas C. W. Mak
- Department of Chemistry The Chinese University of Hong Kong Shatin, New Territories Hong Kong SAR China
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Wu P, Li J, Xiao Z, Zhao Y, Wang Y, Xiao B, Huang B. Ir-based electrocatalysts promoted by TME-substituted polyoxovanadate-derived vanadium carbide for efficient hydrogen evolution and oxygen evolution. Chem Commun (Camb) 2021; 57:10395-10398. [PMID: 34542550 DOI: 10.1039/d1cc03559b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel trimethylolethane (TME)-substituted polyoxovanadate (POV) was designed as a precursor to prepare ultrasmall vanadium carbide nanoparticles, which markedly promoted the hydrogen evolution reaction and oxygen evolution reaction of iridium (Ir)-based electrocatalysts. This work is the first example employing organic ligand-substituted POV as the precursor for metal carbide, and is also the first combination of Ir and vanadium carbide, providing new insights into the design of excellent electrocatalysts.
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Affiliation(s)
- Pingfan Wu
- Institute of POM-Based Materials, Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan, 430068, China.
| | - Jincheng Li
- Institute of POM-Based Materials, Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan, 430068, China.
| | - Zicheng Xiao
- Institute of POM-Based Materials, Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan, 430068, China.
| | - Yanchao Zhao
- Institute of POM-Based Materials, Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan, 430068, China.
| | - Yu Wang
- Institute of POM-Based Materials, Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan, 430068, China.
| | - Bowen Xiao
- Institute of POM-Based Materials, Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan, 430068, China.
| | - Bo Huang
- Institute of POM-Based Materials, Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan, 430068, China.
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9
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Qin T, Wang Z, Wang Y, Besenbacher F, Otyepka M, Dong M. Recent Progress in Emerging Two-Dimensional Transition Metal Carbides. NANO-MICRO LETTERS 2021; 13:183. [PMID: 34417663 PMCID: PMC8379312 DOI: 10.1007/s40820-021-00710-7] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Accepted: 07/25/2021] [Indexed: 05/17/2023]
Abstract
As a new member in two-dimensional materials family, transition metal carbides (TMCs) have many excellent properties, such as chemical stability, in-plane anisotropy, high conductivity and flexibility, and remarkable energy conversation efficiency, which predispose them for promising applications as transparent electrode, flexible electronics, broadband photodetectors and battery electrodes. However, up to now, their device applications are in the early stage, especially because their controllable synthesis is still a great challenge. This review systematically summarized the state-of-the-art research in this rapidly developing field with particular focus on structure, property, synthesis and applicability of TMCs. Finally, the current challenges and future perspectives are outlined for the application of 2D TMCs.
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Affiliation(s)
- Tianchen Qin
- College of Materials Science and Engineering, Sichuan University, Chengdu, 610065, People's Republic of China
| | - Zegao Wang
- College of Materials Science and Engineering, Sichuan University, Chengdu, 610065, People's Republic of China.
| | - Yuqing Wang
- Interdisciplinary Nanoscience Center, Aarhus University, 8000, Aarhus, Denmark
| | | | - Michal Otyepka
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacký University, 77146, Olomouc, Czech Republic
| | - Mingdong Dong
- Interdisciplinary Nanoscience Center, Aarhus University, 8000, Aarhus, Denmark.
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Tang L, Yu J, Zhang Y, Tang Z, Qin Y. Boosting the hydrogen evolution reaction activity of Ru in alkaline and neutral media by accelerating water dissociation. RSC Adv 2021; 11:6107-6113. [PMID: 35423163 PMCID: PMC8694827 DOI: 10.1039/d0ra09515j] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 01/19/2021] [Indexed: 01/18/2023] Open
Abstract
Electrochemical water splitting via a cathodic hydrogen evolution reaction (HER) is an advanced technology for clean H2 generation. Ru nanoparticle is a promising candidate for the state-of-the-art Pt catalyst; however, they still lack the competitiveness of Pt in alkaline and neutral media. Herein, a ternary HER electrocatalyst involving nano Ru and Cr2O3 as well as N-doped graphene (NG) that can work in alkaline and neutral media is proposed. Cr2O3 and NG feature strong binding energies for hydroxyl and hydrogen, respectively, which can accelerate the dissociation of water, whereas Ru has weak hydrogen binding energy to stimulate hydrogen coupling. The HER activity of Ru is greatly enhanced by the promoted water-dissociation effect of NG and Cr2O3. To achieve a current density of 10 mA cm-2, the as-obtained Ru-Cr2O3/NG only needs a very low overpotential of 47 mV, which outperforms the activity of Pt/C in alkaline media. The strategy proposed here, multi-site acceleration of water dissociation, provides new guidance on the design of a highly efficient, inexpensive, and biocompatible HER catalyst in nonacidic condition.
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Affiliation(s)
- Lin Tang
- Jiangsu Key Laboratory of Advanced Materials and Technology, School of Petrochemical Engineering, Changzhou University Changzhou Jiangsu 213164 China
| | - Junjie Yu
- Jiangsu Key Laboratory of Advanced Materials and Technology, School of Petrochemical Engineering, Changzhou University Changzhou Jiangsu 213164 China
| | - Yang Zhang
- Jiangsu Key Laboratory of Advanced Materials and Technology, School of Petrochemical Engineering, Changzhou University Changzhou Jiangsu 213164 China
| | - Zaozao Tang
- Jiangsu Key Laboratory of Advanced Materials and Technology, School of Petrochemical Engineering, Changzhou University Changzhou Jiangsu 213164 China
| | - Yong Qin
- Jiangsu Key Laboratory of Advanced Materials and Technology, School of Petrochemical Engineering, Changzhou University Changzhou Jiangsu 213164 China
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Zhou G, Wu X, Zhao M, Pang H, Xu L, Yang J, Tang Y. Interfacial Engineering-Triggered Bifunctionality of CoS 2 /MoS 2 Nanocubes/Nanosheet Arrays for High-Efficiency Overall Water Splitting. CHEMSUSCHEM 2021; 14:699-708. [PMID: 33179864 DOI: 10.1002/cssc.202002338] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 10/30/2020] [Indexed: 06/11/2023]
Abstract
Searching for high-efficiency nonprecious bifunctional electrocatalysts for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is paramount for the advancement of water electrolysis technologies and the associated renewable energy devices. Modulation of electronic structure of an electrocatalyst via heterointerface engineering represents an efficient strategy to improve its electrocatalytic performance. Herein, a feasible hydrothermal synthesis of a novel heterostructured catalyst was demonstrated, comprising CoS2 nanocubes and vertically aligned MoS2 nanosheet arrays directly grown on flexible and conductive carbon cloth (CC) substrate (denoted as CoS2 /MoS2 @CC). Thanks to the elaborate interface engineering and vertically aligned nanosheet arrayed architecture, the resultant self-supported CoS2 /MoS2 @CC electrode possessed enriched exposed active sites, modulated electronic configuration, multidimensional mass transport channels, and outstanding mechanical strength, thereby affording exceptional electrocatalytic performances towards the HER and OER in alkaline electrolyte with overpotentials of 71 and 274 mV at 10 mA cm-2 , respectively. In addition, a two-electrode electrolyzer assembled by CoS2 /MoS2 @CC required a cell voltage of 1.59 V at 10 mA cm-2 with nearly 100 % faradaic efficiency and remarkable durability, showing great potential for scalable and economical water electrolysis.
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Affiliation(s)
- Guangyao Zhou
- School of Chemistry and Materials Science, Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials, Nanjing Normal University, Nanjing, 210023, P. R. China
| | - Xiaomei Wu
- School of Chemistry and Materials Science, Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials, Nanjing Normal University, Nanjing, 210023, P. R. China
| | - Mingming Zhao
- School of Chemistry and Materials Science, Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials, Nanjing Normal University, Nanjing, 210023, P. R. China
| | - Huan Pang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225009, P. R. China
| | - Lin Xu
- School of Chemistry and Materials Science, Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials, Nanjing Normal University, Nanjing, 210023, P. R. China
| | - Jun Yang
- State Key Laboratory of Multiphase Complex Systems and Center of Mesoscience, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Yawen Tang
- School of Chemistry and Materials Science, Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials, Nanjing Normal University, Nanjing, 210023, P. R. China
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Li W, Feng B, Yi L, Li J, Hu W. Highly Efficient Alkaline Water Splitting with Ru-Doped Co-V Layered Double Hydroxide Nanosheets as a Bifunctional Electrocatalyst. CHEMSUSCHEM 2021; 14:730-737. [PMID: 33225588 DOI: 10.1002/cssc.202002509] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 11/17/2020] [Indexed: 06/11/2023]
Abstract
Active electrocatalysts for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) are decisive for achieving efficient energy conversion from electricity to hydrogen fuel through water electrolysis. In this study, tremella-like Ru-doped Co-V layered double hydroxide nanosheets on Ni Foam (Ru-CoV-LDH@NF) was fabricated by a one-pot solvothermal reaction. As-prepared Ru-CoV-LDH@NF, with a nominal Ru loading of around 51.6 μg cm-2 exhibits excellent bifunctional catalytic activity towards HER and OER in alkaline media. To accomplish a current density of 10 mA cm-2 , it demands 32 mV and 230 mV overpotentials for HER and OER, respectively. The alkali electrolyzer utilizing Ru-CoV-LDH/NF as bifunctional electrocatalyst affords 10 mA cm-2 electrolytic current density at an extremely low cell voltage of 1.50 V, showing excellent performance compared to a Pt/C-RuO2 -based electrolyzer and many other bifunctional electrocatalyst-based ones. The incorporation of Ru changes the morphology of the resultant nanosheets to offer high electrochemical surface areas for electrocatalysis; at the same time, it significantly boosts the intrinsic HER/OER electrocatalytic activity. For HER, the energy barrier of the Volmer step is efficiently reduced upon Ru doping, whereas the Ru dopants optimize the absorption strength of *O intermediates to facilitate the OER process. This work offers a feasible means to optimize the Co-based hydroxide materials for improved electrocatalysis in overall water splitting.
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Affiliation(s)
- Wei Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Southwest University, Ministry of Education, 2 Tiansheng, Beibei, Chongqing, 400715, P. R. China
- School of Materials and Energy, Southwest University, Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, 2 Tiansheng, Beibei, Chongqing, 400715, P. R. China
| | - Bomin Feng
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Southwest University, Ministry of Education, 2 Tiansheng, Beibei, Chongqing, 400715, P. R. China
- School of Materials and Energy, Southwest University, Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, 2 Tiansheng, Beibei, Chongqing, 400715, P. R. China
| | - Lingya Yi
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Southwest University, Ministry of Education, 2 Tiansheng, Beibei, Chongqing, 400715, P. R. China
- School of Materials and Energy, Southwest University, Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, 2 Tiansheng, Beibei, Chongqing, 400715, P. R. China
| | - Junying Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Southwest University, Ministry of Education, 2 Tiansheng, Beibei, Chongqing, 400715, P. R. China
- School of Materials and Energy, Southwest University, Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, 2 Tiansheng, Beibei, Chongqing, 400715, P. R. China
| | - Weihua Hu
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Southwest University, Ministry of Education, 2 Tiansheng, Beibei, Chongqing, 400715, P. R. China
- School of Materials and Energy, Southwest University, Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, 2 Tiansheng, Beibei, Chongqing, 400715, P. R. China
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