期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 137, 期 7, 页码 2548-2554出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja510347s
关键词
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资金
- Advanced Research Projects Agency-Energy, U.S. Department of Energy [DE-AR0000297]
- CRDD in Sharp, Japan
- Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy [DE-AC02-05CH11231]
A novel air-stable sodium iron hexacyanoferrate (R-Na1.92Fe[Fe(CN)(6)]) with rhombohedral structure is demonstrated to be a scalable, low-cost cathode material for sodium-ion batteries exhibiting high capacity, long cycle life, and good rate capability. The cycling mechanism of the iron redox is clarified and understood through synchrotron-based soft X-ray absorption spectroscopy, which also reveals the correlation between the physical properties and the cell performance of this novel material. More importantly, successful preparation of a dehydrated iron hexacyanoferrate with high sodium-ion concentration enables the fabrication of a discharged sodium-ion battery with a non-sodium metal anode, and the manufacturing feasibility of low cost sodium-ion batteries with existing lithium-ion battery infrastructures has been tested.
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