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

Mingzhe Chen, Weibo Hua, Jin Xiao, David Cortie, Weihua Chen (), Enhui Wang, Zhe Hu, Qinfen Gu, Xiaolin Wang, Sylvio Indris, Shu-Lei Chou () and Shi-Xue Dou
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Mingzhe Chen: Institute for Superconducting and Electronic Materials, University of Wollongong
Weibo Hua: Institute for Applied Materials-Energy Storage Systems (IAM-ESS), Karlsruhe Institute of Technology (KIT)
Jin Xiao: School of Science, Hunan University of Technology
David Cortie: Institute for Superconducting and Electronic Materials, University of Wollongong
Weihua Chen: Zhengzhou University
Enhui Wang: Institute for Superconducting and Electronic Materials, University of Wollongong
Zhe Hu: Institute for Superconducting and Electronic Materials, University of Wollongong
Qinfen Gu: Australian Synchrotron
Xiaolin Wang: Institute for Superconducting and Electronic Materials, University of Wollongong
Sylvio Indris: Institute for Applied Materials-Energy Storage Systems (IAM-ESS), Karlsruhe Institute of Technology (KIT)
Shu-Lei Chou: Institute for Superconducting and Electronic Materials, University of Wollongong
Shi-Xue Dou: Institute for Superconducting and Electronic Materials, University of Wollongong

Nature Communications, 2019, vol. 10, issue 1, 1-11

Abstract: 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.

Date: 2019
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DOI: 10.1038/s41467-019-09170-5

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