Bimetallic NiCoP catalysts anchored on phosphorus-doped lignin-based carbon for robust oxygen evolution performance

Ling-Ying-Zi Xiong ¹Bo-Wen Liu ²Lei Du ³Yue-Kuan Zhou ⁴Xu-Liang Lin ⁵Huan Wang⁶

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作者信息

1. Guangdong Engineering Technology Research Center for Sensing Materials & Devices,Guangzhou Key Laboratory of Sensing Materials & Devices,School of Chemistry and Chemical Engineering,Guangzhou University,Guangzhou 510006,China;School of Chemical Engineering and Light Industry,Guangdong University of Technology,Guangzhou 510006,China
2. Guangdong Provincial Laboratory of Chemistry and Fine Chemical Engineering Jieyang Center,Jieyang 515200,China
3. Guangdong Engineering Technology Research Center for Sensing Materials & Devices,Guangzhou Key Laboratory of Sensing Materials & Devices,School of Chemistry and Chemical Engineering,Guangzhou University,Guangzhou 510006,China
4. Sustainable Energy and Environment Thrust,Function Hub,The Hong Kong University of Science and Technology(Guangzhou),Guangzhou 511400,China;Division of Emerging Interdisciplinary Areas,Department of Mechanical and Aerospace Engineering,The Hong Kong University of Science and Technology,Hong Kong 999077,China
5. Guangdong Provincial Laboratory of Chemistry and Fine Chemical Engineering Jieyang Center,Jieyang 515200,China;State Key Lab of Pulp and Paper Engineering,South China University of Technology,Guangzhou 510640,China
6. Guangdong Engineering Technology Research Center for Sensing Materials & Devices,Guangzhou Key Laboratory of Sensing Materials & Devices,School of Chemistry and Chemical Engineering,Guangzhou University,Guangzhou 510006,China;Guangdong Provincial Laboratory of Chemistry and Fine Chemical Engineering Jieyang Center,Jieyang 515200,China;State Key Lab of Pulp and Paper Engineering,South China University of Technology,Guangzhou 510640,China
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Abstract

Oxygen evolution reaction(OER)catalysts are the key core materials that determine the performance of fuel cells,metal-air batteries,electrolytic water decomposition,and other applications.In this work,a green lignin-based non-precious metal OER catalyst was prepared by a simple strategy.Firstly,carboxylated lignin was used to complex Ni and Co in situ,and then they were placed with sodium hypophosphite in the same tube furnace for upstream and downstream high-temperature calcination to construct a lignin carbon-based Ni-Co bimetallic OER catalyst(NiCoP@C).The synthesized catalyst is a porous bimetallic phosphide with a three-dimensional network structure and high-density electrochemical active sites.NiCoP@C exhibited favorable catalytic activity for the oxygen evolu-tion reaction(OER)with overpotential of 280 mV at 10 mA·cm-2 and a Tafel slope of 77 mV·dec-1.Addition-ally,it exhibited remarkable durability during usage.Density functional theory(DFT)calculations revealed that by leveraging the distinctive structure of transition metal phosphide nanoparticles incorporated into a reticulated substrate,the NiCoP@C catalyst offered an increased number of active sites for OER catalysis,significantly enhancing its stability during practical applications.The present study broadens the utilization pathways of biomass to"turn waste into treasure,"aligning the development concept of green sustainable development.

Key words

Oxygen evolution reaction/Lignin/Carbon-based catalyst/Nickel-cobalt bimetal/Metal phosphide

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基金项目

National Natural Science Foundation of China(22278092)

Science and Technology Research Project of Guangzhou(2023A03J0034)

Science and Technology Research Project of Guangzhou(2023A04J0077)

Science and Technology Research Project of Guangzhou(202201000002)

State Key Laboratory of Pulp and Paper Engineering(202313)

Key Discipline of Materials Science and Engineering,Bureau of Education of Guangzhou(202255464)

出版年

2024

稀有金属(英文版)

中国有色金属学会

稀有金属(英文版)

CSTPCDCSCDEI

影响因子：0.801

ISSN：1001-0521

参考文献量3

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