尖晶石
催化作用
电化学
材料科学
化学工程
化学气相沉积
碳纳米管
氧气
碳纤维
纳米技术
电极
化学
复合材料
有机化学
冶金
物理化学
复合数
工程类
作者
Yi-Ru Hao,Hui Xue,Liang Lv,Jing Sun,Niankun Guo,Tianshan Song,Hongliang Dong,Jiangwei Zhang,Qin Wang
标识
DOI:10.1016/j.apcatb.2021.120314
摘要
Engineering of defect and interface are two effective strategies to regulate the electronic structure and electrocatalytic activities. However, integrated the synergistic effect of carbon/oxygen defects and interfacial effects into spinel derivatives to dramatically improve the electrocatalytic property has not been studied up till now. Herein, a [email protected]3N hybrid embedded into N-doped carbon nanotube has been prepared by heat-treatment of CoFe2O4 using a simple chemical vapor deposition method. Impressively, the as-prepared [email protected]3N-CNT catalyst manifests a prominent stability and catalytic performance towards the oxygen reduction reaction (ORR), as demonstrated by an ultrahigh half-wave potential (E1/2) of 0.936 V, which is the best ORR spinel-based catalysts. Furthermore, it was assembled into a rechargeable ZAB, which showed a high-power density of 173.6 mW cm−2 and an open circuit voltage of 1.534 V. The enhanced electrochemical performances are primarily due to the synergistic effect of carbon-oxygen double defects and interfacial electronic structure modulation.
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