Ni-Fe bimetallic core-shell structured catalysts supported on biomass longan aril derived nitrogen doped carbon for efficient oxygen reduction and evolution performance. (September 2020)

• Record Type: Journal Article
• Authors: Dong, Dongqi; Guo, Xuyun; Ma, Chuanli; Gong, Liangyu; Su, Linghao; Xie, Tian; Zhu, Ye; Wang, Jie
• Is Part Of: Materials today communications. Volume 24(2020)
• Publication Date: 2020-09
• Subjects: Ni-Fe bimetallic catalyst -- Biomass longan aril -- Nitrogen doping shell -- Oxygen reduction reaction -- Oxygen evolution reaction; Materials science -- Periodicals; 620.11
• DOI: 10.1016/j.mtcomm.2020.101127
• Languages: English
• ISSNs: 2352-4928

Abstract

Highlights: Nitrogen doped porous carbon supported Fe-Ni bimetallic alloy is successfully prepared via a simple synthetic strategy. Such materials feature a metal-core nitrogen doped carbon shell structure. Biomass longan aril serves as carbon source, shell forming material and nitrogen doping receptor. Superior bi-functional catalytic performance towards oxygen reduction and evolution reactions is obtained. The excellent electrocatalytic performance is ascribed to the coordination effect of Fe-Ni with N-doped porous carbon. Abstract: A simple two-step synthetic strategy for the preparation of Ni-Fe bimetallic nanoparticles with nitrogen doped carbon shell and support (FeNi@NC/NC) is successfully developed. Biomass longan aril serves not only as carbon source for catalyst supporting, but also a shell forming material and nitrogen doping receptor. When serving as electrocatalysts for oxygen electrode reaction, such bimetallic composite exhibits superior bi-functional electrocatalytic activities towards oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). Benefiting from the high-conductive carbon shell and the coordination effect between NiFe alloy and nitrogen doped porous carbon support, the resultant FeNi@NC/NC achieved high durability over ORR and OER.