电催化剂
材料科学
多孔性
静电纺丝
电极
纳米纤维
纳米技术
碳纳米纤维
催化作用
化学工程
电化学
碳纤维
纳米材料
化学
复合材料
聚合物
碳纳米管
复合数
工程类
有机化学
物理化学
作者
Jiacheng Yan,Zeming Tang,Binxin Li,Da Bi,Qingxue Lai,Yanyu Liang
出处
期刊:ACS Sustainable Chemistry & Engineering
[American Chemical Society]
日期:2019-10-02
卷期号:7 (21): 17817-17824
被引量:24
标识
DOI:10.1021/acssuschemeng.9b04327
摘要
With the advantages of low cost, non-pollution, and strong controllability over composition, morphology, nanostructures, as well as surface characters, carbon-based nanomaterials are regarded as ideal substitutes of traditional platinum-based catalysts for oxygen reduction reaction (ORR) electrocatalysis in ORR-involved devices. Herein, an in situ ZnO activation-coupled electrospinning strategy was employed to facilely construct nitrogen-doped porous carbon nanofibers (NPCNF) for flexible Zn–air batteries. In situ formation and thermal removal of ZnO make a critical difference in construction of micro/meso-hierarchically porous structures as well as highly active N-doped sites, therefore generating self-standing carbon nanofibers with high nitrogen doping content as well as specific Brunauer–Emmett–Teller of 501 m2/g and 5.6 at. %. As a result, the prepared NPCNF as a self-standing electrode delivers an excellent performance both in alkaline liquid-state and quasi-solid-state Zn–air batteries, giving the possibility of applications in flexible devices.
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