A novel Mn-based P2/tunnel/O3' tri-phase composite cathode with enhanced sodium storage properties

Authors

Dong Wang
Yihua Liu
Zhenguo Wu
Xiaohong Liu
Jie Qu
Hao Liu
Yong Ming
Yanjun Zhong
Benhe Zhong
Xiaodong Guo, University of Wollongong, Sichuan University, University Of WollongongFollow

RIS ID

142016

Publication Details

Wang, D., Liu, Y., Wu, Z., Liu, X., Qu, J., Liu, H., Ming, Y., Zhong, Y., Zhong, B. & Guo, X. (2020). A novel Mn-based P2/tunnel/O3' tri-phase composite cathode with enhanced sodium storage properties. Chemical Communications, 56 (19), 2921-2924.

Abstract

A novel P2/tunnel/O3' composite Na0.7Bi0.01MnO2 cathode is developed via the Na+-site modification of Bi3+ in layer structure Na0.7MnO2 for the first time. Superior electrochemical performance with a high capacity retention of ∼86.5% after 300 cycles at 2C is obtained. Moreover, the tri-phase structure can also serve as a model material, which intuitively evidences the environmental structural stability order: tunnel > P2 > O3'.