期刊
NATURE COMMUNICATIONS
卷 10, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s41467-019-09170-5
关键词
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资金
- Australian Research Council [ARC DP160102627]
- Australian Renewable Energy Agency (ARENA S4) projects
- National Natural Science Foundation of China [11704114, 61427901, 21771164, U1804129]
- Hunan Provincial Natural Science Foundation of China [2018JJ3110]
- Scientific Research Fund of the Hunan Provincial Education Department of China [17C0462]
- China Postdoctoral Science Foundation [2017M620872]
The development of low-cost and long-lasting all-climate cathode materials for the sodium ion battery has been one of the key issues for the success of large-scale energy storage. One option is the utilization of earth-abundant elements such as iron. Here, we synthesize a NASICON-type tuneable Na4Fe3(PO4)(2)(P2O7)/C nanocomposite which shows both excellent rate performance and outstanding cycling stability over more than 4400 cycles. Its air stability and all-climate properties are investigated, and its potential as the sodium host in full cells has been studied. A remarkably low volume change of 4.0% is observed. Its high sodium diffusion coefficient has been measured and analysed via first-principles calculations, and its three-dimensional sodium ion diffusion pathways are identified. Our results indicate that this low-cost and environmentally friendly Na4Fe3(PO4)(2)(P2O7)/C nanocomposite could be a competitive candidate material for sodium ion batteries.
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