Journal Article

PUBDB-2019-01797

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png NASICON-type air-stable and all-climate cathode for sodium-ion batteries with low cost and high-power density

Chen, M. ; Hua, W.Extern* ; Xiao, J. ; Cortie, D. ; Chen, W. ; Wang, E. ; Hu, Z. ; Gu, Q. ; Wang, X. ; Indris, S.Extern* ; Chou, S.-L. (Corresponding author) ; Dou, S.-X.

2019
Nature Publishing Group UK [London]

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Please use a persistent id in citations: doi:10.1038/s41467-019-09170-5  doi:10.3204/PUBDB-2019-01797

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 Na$_4$Fe$_3$(PO$_4$)$_2$(P$_2$O$_7$)/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$_4$Fe$_3$(PO$_4$)$_2$(P$_2$O$_7$C nanocomposite could be a competitive candidate material for sodium ion batteries.

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Contributing Institute(s):

1. DOOR-User (DOOR)

Research Program(s):

1. 6G3 - PETRA III (POF3-622) (POF3-622)

Experiment(s):

1. PETRA Beamline P02.1 (PETRA III)
2. PETRA Beamline P64 (PETRA III)

Appears in the scientific report 2019

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