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Chen, Mingzhe; Hua, Weibo; Xiao, Jin; Cortie, David; Chen, Weihua; Wang, Enhui; Hu, Zhe; Gu, Qinfen; Wang, Xiaolin; Indris, Sylvio; Chou, Shu-Lei; Dou, Shi-Xue
Nature communications, 04/2019, Volume: 10, Issue: 1Journal Article
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 Na Fe (PO ) (P O )/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 Na Fe (PO ) (P O )/C nanocomposite could be a competitive candidate material for sodium ion batteries.
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