Novel Solid-State Sodium-Ion Battery with Wide Band Gap NaTi2(PO4)3 Nanocrystal Electrolyte

Hanqing Dai, Wenqian Xu, Zhe Hu, Yuanyuan Chen, Jing Gu, Fengxian Xie, Wei Wei, Ruiqian Guo, Guoqi Zhang

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Abstract

NaTi2(PO4)3 (NTP), a well-known anode material, could be used as a solid wide-band gap electrolyte. Herein, a novel solid-state sodium-ion battery (SSIB) with the thickness of electrolyte up to the millimeter level is proposed. The results of the difference in charge density investigated by the first-principles calculations imply that using the NTP nanocrystals as electrolytes to transport sodium ions is feasible. Moreover, the SSIB exhibits a high initial discharge capacity of 3250 mAh g-1 at the current density of 50 mA g-1. As compared with other previously reported SSIBs, our results are better than those reported and suggest that the NTP nanocrystals have potential application in SSIBs as solid electrolytes.

Original languageEnglish
Pages (from-to)11537-11544
Number of pages8
JournalACS Omega
Volume6
Issue number17
DOIs
Publication statusPublished - 2021

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