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

Journal article (2021)

Authors

Hanqing Dai Fudan University
Wenqian Xu Nanjing University of Posts and Telecommunications
Zhe Hu Fudan University
Yuanyuan Chen Fudan University
Jing Gu Nanjing University of Posts and Telecommunications
Fengxian Xie Fudan University
Wei Wei Nanjing University of Posts and Telecommunications
Ruiqian Guo Fudan University
Kouchi Zhang Electronic Components, Technology and Materials - EEMCS
Guoqi Zhang Electronic Components, Technology and Materials - EEMCS
Research Group
Electronic Components, Technology and Materials (EEMCS) (TU Delft)
Copyright: © 2021 Hanqing Dai, Wenqian Xu, Zhe Hu, Yuanyuan Chen, Jing Gu, Fengxian Xie, Wei Wei, Ruiqian Guo, Kouchi Zhang
DOI: https://doi.org/10.1021/acsomega.1c00664
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Published Date

2021

Language

English

Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Microelectronics

Research Group

Electronic Components, Technology and Materials

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.