电催化剂
静电纺丝
材料科学
纳米纤维
碳纳米纤维
碳纤维
纳米技术
多孔性
析氧
贵金属
化学工程
复合材料
碳纳米管
金属
电化学
聚合物
化学
电极
冶金
复合数
物理化学
工程类
作者
Xuan Wang,Xinyue Zhang,Gengtao Fu,Yawen Tang
标识
DOI:10.1016/j.mtener.2021.100850
摘要
Oxygen electrocatalysis including oxygen reduction reaction and oxygen evolution reaction is key to improve conversion efficiency of metal–air batteries. Noble metals are accepted for oxygen electrocatalysis, but their scarcity and poor durability largely inhibit their wide commercial application. One-dimensional (1D) porous carbon-based materials (e.g. carbon-supported transition metals and heteroatom-doped carbon) are the promising alternatives for noble metal–based catalysts, owing to more exposed active sites, high electronic conductivity, and good mechanical strength. However, achieving favorable 1D porous carbon-based materials remains a great challenge. Electrospinning technology accompanied by post-treatments (e.g. preoxidation and annealing) is considered to be a facile and universal strategy for the preparation of porous carbon-based nanofibers. This review focuses on recent progress in designing of porous carbon-based nanofibers via electrospinning technology for oxygen electrocatalysis. A brief introduction of the electrospinning principles is provided and discussed firstly. Then, a classified introduction and discussion of electrospun porous carbon-based nanofibers in terms of preparation and application in oxygen electrocatalysis is highlighted. Finally, the current challenges and future perspectives on the synthesis and electrocatalytic applications of electrospun porous carbon-based nanofibers are proposed.
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