journal article·2022-08-26

Benzenehexol-Modified Co2(OH)2CO3 Nanowire Substrates for Highly Efficient Electrocatalytic Alkaline Hydrogen Evolution

Yue Liu, Xukun Zhu, Ling Qin, Tong Zhang, Shuhan Wang, Yachao Jin, Li Song, Ming-Dao Zhang

ACS Applied Nano Materials· Volume 5· Issue 8
Publisher page

Abstract

The construction of special heterogeneous interface structures without precious metals is found to be efficient for the development of low-cost and high-activity hydrogen evolution reduction (HER) catalysts. Here, we report a moderate method to develop an efficient and stable HER electrode especially composed of the Co2(OH)2CO3 (COC) nanowire substrate modified by benzenehexol (HOB) molecules. This kind of interfacial structure leads to prominent electrocatalytic HER performance in an alkaline environment with a low overpotential of 130.8 mV at a current of 20 mA cm–2. Meanwhile, density functional theory (DFT) calculations reveal that the nanoscale synergistic interfacial mechanism and strong electron interaction between HOB and COC can reduce the activation energy for HER.
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Research context

OpenAlex topics: Electrocatalysts for Energy Conversion · Advanced battery technologies research · Electrochemical Analysis and Applications

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Affiliations

Institute of Energy Supply Technology for High-end Equipment, School of Environmental Science and Engineering, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Collaborative Innovation Center of Atmospheric Environment, Nanjing University of Information Science and Technology, Nanjing 210044, Jiangsu, P. R. China

School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, Anhui, P. R. China

Funding

Nanjing University of Information Science and Technology · Natural Science Foundation of Jiangsu Province · Priority Academic Program Development of Jiangsu Higher Education Institutions · Jiangsu Cyan Engineering of Higher Education · Jiangsu Engineering Technology Research Canter of Environmental Cleaning Materials · Jiangsu Joint Laboratory of Atmospheric Pollution Control

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