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Fluorinated bimetallic nanoparticles decorated carbon nanofibers as highly active and durable oxygen electrocatalyst for fuel cells

Fluorinated bimetallic nanoparticles decorated carbon nanofibers as highly active and durable oxygen electrocatalyst for fuel cells

作     者:Yiming Leng Bolong Yang Yun Zhao Zhonghua Xiang Yiming Leng;Bolong Yang;Yun Zhao;Zhonghua Xiang

作者机构:State Key Laboratory of Organic-Inorganic CompositesBeijing University of Chemical TechnologyBeijing 100029China 

出 版 物:《Journal of Energy Chemistry》 (能源化学(英文版))

年 卷 期:2022年第31卷第10期

页      面:549-555,I0014页

核心收录:

学科分类:0808[工学-电气工程] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 

基  金:supported by the National Key Research and Development Program of China(2019YFA0210300) the NSF of China(21922802) the talent cultivation of State Key Laboratory of Organic-Inorganic Composites the‘‘Double-First-Class”construction projects(XK180301,XK1804-02) the Distinguished Scientist Program at BUCT(buctylkxj02) 

主  题:Bimetallic catalyst Fluorination Electrospinning ORR catalyst PEM fuel cell 

摘      要:The low activity and durability are still the critical barriers for non-precious metal electrocatalyst,mainly involving M-N/C(M=Fe,Co,Mn et al),applied in fuel *** bimetallic sites has been explored as an effective method to boost the performance of the catalyst for the synergistic effect between metal ***,this synergistic effect is always suppressed in acidic conditions and results in unstable catalytic *** we create novel fluorinated iron(Fe)and cobalt(Co)bimetallic nanoparticles distributed on nitrogen-doped carbon nanofibers(CNFs)for oxygen reduction reaction(ORR).The fluorination strongly increased the charge density of the bimetallic catalyst and resulted in a remarkable catalytic performance with the half-wave potential of 804 m V in 0.1 M HCl O_(4)and 1.6 times power density improvement for the proton exchange membrane fuel cell ***,the chemical and mechanical robust CNFs support improved the electric conductivity and stability of bimetallic catalysts,which leads to an ultra-stable *** fuel cell voltage can keep stable even after 110 h,instead of the continuingly decrease in the traditional M-N/C.

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