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NASICON-type air-stable and all-climate cathode for sodium-ion batteries with low cost and high-power density.

ABSTRACT: 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.

SUBMITTER: Chen M 

PROVIDER: S-EPMC6443767 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature

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NASICON-type air-stable and all-climate cathode for sodium-ion batteries with low cost and high-power density.

Chen Mingzhe M   Hua Weibo W   Xiao Jin J   Cortie David D   Chen Weihua W   Wang Enhui E   Hu Zhe Z   Gu Qinfen Q   Wang Xiaolin X   Indris Sylvio S   Chou Shu-Lei SL   Dou Shi-Xue SX  

Nature communications 20190401 1

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<sub>4</sub>Fe<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub>(P<sub>2</sub>O<sub>7</sub>)/C nanocomposite which shows both excellent rate performance and outstanding cycling stability over more than 4400 cycles  ...[more]

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