催化作用
杂原子
纳米颗粒
碳纳米管
兴奋剂
材料科学
甲醇
电解质
化学工程
电池(电)
碳纤维
钴
纳米技术
无机化学
化学
复合数
冶金
光电子学
复合材料
物理化学
功率(物理)
电极
有机化学
工程类
物理
量子力学
戒指(化学)
作者
Huihui Jin,Huang Zhou,Pengxia Ji,Chengtian Zhang,Jiahuan Luo,Weihao Zeng,Chenxi Hu,Daping He,Shichun Mu
出处
期刊:Nano Research
[Springer Nature]
日期:2020-02-26
卷期号:13 (3): 818-823
被引量:63
标识
DOI:10.1007/s12274-020-2702-3
摘要
Iron-based oxygen reduction reaction (ORR) catalysts have been the focus of research, and iron sources play an important role for the preparation of efficient ORR catalysts. Here, we successfully use LiFePO4 as ideal sources of Fe and P to construct the heteroatom doped Fe-based carbon materials. The obtained Fe-N-P co-doped coral-like carbon nanotube arrays encapsulated Fe2P catalyst (C-ZIF/LFP) shows very high half-wave potential of 0.88 V in alkaline electrolytes toward ORR, superior to Pt/C (0.85 V), and also presents a high half-wave potential of 0.74 V in acidic electrolytes, comparable to Pt/C (0.8 V). When further applied into a home-made Zn-air battery as cathode, a peak power density of 140 mW·cm2 is reached, exceeds commercial Pt/C (110 mW·cm2). Besides, it also presents exceptional durability and methanol resistance compared with Pt/C. Noticeably, the preparation method of such a high-performance catalyst is simple and easy to optimize, suitable for the large-scale production. What’s more, it opens up a more sustainable development scenario to reduce the hazardous wastes such as LiFePO4 by directly using them for preparing high-performance ORR catalysts.
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