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

作　　者：Ling-Ying-Zi Xiong Bo-Wen Liu Lei Du Yue-Kuan Zhou Xu-Liang Lin Huan Wang 

机构地区：[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 [2]School of Chemical Engineering and Light Industry,Guangdong University of Technology,Guangzhou 510006,China [3]Guangdong Provincial Laboratory of Chemistry and Fine Chemical Engineering Jieyang Center,Jieyang 515200,China [4]Sustainable Energy and Environment Thrust,Function Hub,The Hong Kong University of Science and Technology(Guangzhou),Guangzhou 511400,China [5]Division of Emerging Interdisciplinary Areas,Department of Mechanical and Aerospace Engineering,The Hong Kong University of Science and Technology,Hong Kong 999077,China [6]State Key Lab of Pulp and Paper Engineering,South China University of Technology,Guangzhou 510640,China

出　　处：《Rare Metals》2024年第7期3084-3095,共12页稀有金属（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(No.22278092);the Science and Technology Research Project of Guangzhou(Nos.2023A03J0034,2023A04J0077 and 202201000002);the State Key Laboratory of Pulp and Paper Engineering(No.202313);the Key Discipline of Materials Science and Engineering,Bureau of Education of Guangzhou(No.202255464)。

摘　　要：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,c arboxylated 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 evolution reaction(OER)with overpotential of 280 mV at 10 mA·cm~(-2)and a Tafel slope of 77 mV·dec~(-1).Additionally,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.

关 键 词：Oxygen evolution reaction LIGNIN Carbon-based catalyst Nickel-cobalt bimetal Metal phosphide 

分 类 号：O643.36[理学—物理化学]