Construction of robust and durable Cu2Se-V2O5 nanosheet electrocatalyst for alkaline oxygen evolution reaction

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外文摘要：Reducing the production costs of clean energy carriers such as hydrogen through scalable water electrolysis is a potential solution for advancing the hydrogen economy.Among the various material candidates,our group demonstrated transition-metal-based materials with tunable electronic characteristics,various phases,and earth-abundance.Herein,electrochemical water oxidation using Cu2Se-V2O5 as a non-precious metallic electrocatalyst via a hydrothermal approach is reported.The water-splitting performance of all the fabricated electrocatalysts was evaluated after direct growth on a stainless-steel substrate.The electrochemically tuned Cu2Se-V2O5 catalyst exhibited a reduced overpotential of 128 mV and provided a reduced Tafel slope of 57 mV dec-1 to meet the maximum current density of 250 mA·cm-2.The optimized strategy for interfacial coupling of the fabricated Cu2Se-V2O5 catalyst resulted in a porous structure with accessible active sites,which enabled adsorption of the intermediates and afforded an effective charge transfer rate for promoting the oxygen evolution reaction.Furthermore,the combined effect of the catalyst components provided long-term stability for over 110 h in an alkaline solution,which makes the catalyst promising for large-scale practical applications.The aforementioned advantages of the composite catalyst overcome the limitations of low conductivity,agglomeration,and poor stability of the pure catalysts(Cu2Se and V2O5).

外文关键词：

oxygen evolution reactionCu2Se-V2O5 compositenanosheetsmetal-diffused ionsaccessible adsorption sites

作者：

Tauseef Munawar、Ambreen Bashir、Khalid Mujasam Batoo、Saman Fatima、Faisal Mukhtar、Sajjad Hussain、Sumaira Manzoor、Muhammad Naeem Ashiq、Shoukat Alim Khan、Muammer Koc、Faisal Iqbal

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作者单位：

Institute of Physics,The Islamia University of Bahawalpur,Bahawalpur 63100,Pakistan

King Abdullah Institute for Nanotechnology,King Saud University,Riyadh 11451,Saudi Arabia

Hybrid Materials Center(HMC),Sejong University,Seoul 05006,Republic of Korea

Department of Nanotechnology and Advanced Materials Engineering,Sejong University,Seoul 05006,Republic of Korea

Institute of Chemical Sciences,Bahauddin Zakariya University,Multan 60800,Pakistan

Division of Sustainable Development,College of Science and Engineering,Hamad Bin Khalifa University,Qatar Foundation,Doha 34110,Qatar

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基金：

K M Batoo expresses thanks to the Researchers Supporting Project

项目编号：

RSP2024R148

出版年：

2024

DOI：

10.1007/s11705-024-2420-6

化学科学与工程前沿

高等教育出版社

化学科学与工程前沿

CSTPCDEI

影响因子：0.172

ISSN：2095-0179

年,卷(期)：2024.18(6)