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.