Efficient and stable neutral zinc-air batteries by three-dimensional ordered macroporous N-doped carbon frameworks loading NiN4 active sites

被引:3
|
作者
Cai, Zihe [1 ]
Li, Menglei [1 ]
Hu, Xiaobin [2 ]
Zheng, Lirong [3 ]
机构
[1] China Huaneng Grp Clean Enery Res Inst, Beijing 102209, Peoples R China
[2] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China
[3] Chinese Acad Sci, Beijing Synchrotron Radiat Facil BSRF, Inst High Energy Phys, Beijing 100049, Beijing, Peoples R China
基金
中国国家自然科学基金;
关键词
Oxygen reduction reaction; Oxygen evolution reaction; Neutral zinc-air batteries; 3DOM; NiN4 active sites; ELECTROLYTE; CATALYSTS;
D O I
10.1016/j.matlet.2022.133462
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Neutral zinc-air batteries prevent the carbon based catalysts from being oxidized during cycling, which show excellent potential for long-term energy storage. Three-dimensional ordered macroporous nitrogen doped carbon frameworks with NiN4 (3DOM Ni-N-C) were constructed by in situ reaction of Ni nanoparticles and dicyandiamide. The 3DOM Ni-N-C bifunctional catalysts exhibit comparable oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) efficiency and stablity. The 3D interconnected structure of 3DOM Ni-N-C provides sufficient channel for mass transfer, resulting in high power density (35 mW cm(-2)) and long cycle life (580 cycles) of neutral zinc-air batteries. Meanwhile the failure mechanism in neutral electrolyte was discussed.
引用
收藏
页数:3
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