期刊
ADVANCED MATERIALS
卷 30, 期 4, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201704898
关键词
heteroatom-doped carbon catalysts; oxygen reaction activity; zinc-air batteries
类别
资金
- National Natural Science Foundation of China [51402202, 51622208]
- Natural Science Foundation of Jiangsu Province of China [BK20150338]
- China Postdoctoral Science Foundation [2015M570474, 2016T90491]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
Driven by the intensified demand for energy storage systems with high-power density and safety, all-solid-state zinc-air batteries have drawn extensive attention. However, the electrocatalyst active sites and the underlying mechanisms occurring in zinc-air batteries remain confusing due to the lack of in situ analytical techniques. In this work, the in situ observations, including X-ray diffraction and Raman spectroscopy, of a heteroatom-doped carbon air cathode are reported, in which the chemisorption of oxygen molecules and oxygen-containing intermediates on the carbon material can be facilitated by the electron deficiency caused by heteroatom doping, thus improving the oxygen reaction activity for zinc-air batteries. As expected, solid-state zinc-air batteries equipped with such air cathodes exhibit superior reversibility and durability. This work thus provides a profound understanding of the reaction principles of heteroatom-doped carbon materials in zinc-air batteries.
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