Bimetal nanoparticles hybridized with carbon nanotube boosting bifunctional oxygen electrocatalytic performance

作     者：Chen Sun Yong-Jie Zhao Xuan-Yi Yuan Jing-Bo Li Hai-Bo Jin Chen Sun;Yong-Jie Zhao;Xuan-Yi Yuan;Jing-Bo Li;Hai-Bo Jin

作者机构：Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green ApplicationsSchool of Materials Science and EngineeringBeijing Institute of TechnologyBeijing100081China Beijing Key Laboratory of Opto-Electronic Functional Materials&Micro-Nano DevicesDepartment of PhysicsRenmin University of ChinaBeijing100872China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2022年第41卷第8期

页      面：2616-2623页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 0806[工学-冶金工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：financially supported by the National Natural Science Foundation of China (No.52072033) 

主　　题：NiFe alloy Oxygen evolution reaction(OER) Oxygen reduction reaction(ORR) Zn-air batteries 

摘      要：Developing bifunctional oxygen catalysts with high efficiency and low cost to replace platinum-group metal catalysts commonly utilized in metal-air batteries is critically desired.In this article,a convenient method to synthesis NiFe nanoparticles hybridized with N-doped carbon nanotube(NiFe@N-CNTs)is reported.Electrocatalytic performance analysis indicates that Ni_(x)Fc_(1-x)@N-CNTs offers favorable oxygen reduction reaction(ORR)kinetics(onset potential(E_(onset))is 0.87 V and half-wave potential(E_(1/2))is0.84 V),together with excellent oxygen evolution reaction(OER)performance(an overpotential of 270 mV to drive10 mA·cm^(-2)).Contributed by the synergetic effect between NiFe alloy and N-CNTs,when being utilized as air cathode,rechargeable Zn-air batteries present superior cycling stability for over 150 h.This research provides a universal strategy to synthesize the hybrids of intertwined carbon nanotube matrix loaded with alloy nanoparticles.