Facile synthesis of hybridized Co/Fe-ZIF under solvent-free conditions for efficient oxidation evolution reaction electrocatalysis  

作　　者：YinSheng Xu Zihan Li Zhonghan Cheng Somboon Chaemchuen 

机构地区：[1]State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,China [2]Department of Chemical Engineering,Faculty of Engineering,Mahidol University,Nakhon Pathom 73170,Thailand [3]State Key Laboratory of Silicate Materials for Architectures,Wuhan University of Technology,Wuhan 430070,China [4]School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China

出　　处：《Nano Research》2025年第1期362-372,共11页纳米研究（英文版）

基　　金：the State Key Lab of Advanced Technology for Materials Synthesis and Processing for financial support(Wuhan University of technology);the National Natural Science Foundation of China(No.21950410754).

摘　　要：Developing non-noble catalyst synthesis under green conditions with efficient electrochemical reactions is a challenging task in green energy technologies.To meet this challenge,the synthesis of hybridized non-noble cobalt and iron in the zeolitic-imidazole framework(Co/Fe-ZIF)through a solid-state thermal(SST)method is developed.In the obtained Co/Fe-ZIF structure,iron atoms are uniformly dispersed and randomly hybridized with primary cobalt atoms and imidazole linker,similar to the structure of ZIF-67.The hybridized Co/Fe-ZIF shows potential as an electrocatalyst for oxidation evolution reaction(OER).The optimal iron-incorporating catalyst,Co/Fe_(0.2)-ZIF,demonstrates remarkable performance with a minimized overpotential of 285 mV at the current density(j)of 10 mA·cm^(-2)in 1 M KOH.The synergistic effect of iron and cobalt ions on the catalyst provides active sites that bind to intermediate(OOH^(*))more strongly and facilitate high electron charge transfer,enhancing efficient electrocatalyst.Furthermore,the synergistic Co/Fe_(0.2-)ZIF catalyst demonstrates excellent durable reaction time compared to non-iron catalyst(ZIF-67)and conventional catalyst(RuO_(2)).

关 键 词：zeolitic-imidazole frameworks solid-state thermal method solvent-free synthesis ELECTROCATALYST oxidation evolution reaction 

分 类 号：O64[理学—物理化学]