A Novel Lithium Substitution Induced Tunnel/Spinel Heterostructured Cathode Material for Advanced Sodium-Ion Batteries

---

作者

Xinghui Liang¹ , Rizki Ismoyojati¹ , Yang-Kook Sun¹

1. Hanyang University

会议/活动

The 21st International Meeting on Lithium Batteries 2022, June 2022 (Sydney, Australia)

海报摘要

Among the various cathode materials reported, the tunnel-type Na0.44MnO2 has attracted great interest. Unfortunately, the Na storage performance of this material is affected by Mn disproportionation, resulting in a rapid capacity drop and poor rate performance. To address these shortcomings, a Li substituted-induced tunnel/spinel heterostructured cathode material is successfully synthesized and comprehensively studied. Li dopants can act as pillars in the crystal framework to suppress unfavorable phase transitions and enhance structural reversibility. In addition, the additional spinel structure provides a new three-dimensional Na+ ion transport channel, effectively improving the ion diffusion kinetics.

关键词

Sodium ion battery, Lithium substitution, Tunnel/spinel heterostructure, Tunnel-type Na0.44MnO2

研究领域

Chemistry, Material Sciences, Energy Engineering

参考文献

1. J.-Y. Hwang, S.-T. Myung, Y.-K. Sun, Chem. Soc. Rev. 46 (2017) 3529–3614.
2. J.-Y. Hwang, J. Kim, T.-Y. Yu, Y.-K. Sun, Adv. Energy Mater. 9 (2019) 1803346.
3. P. Zheng, J. Su, Y. Wang, W. Zhou, J. Song, Q. Su, N. Reeves‐Mclaren, S. Guo, ChemSusChem 13 (2020) 1793–1799.
4. X. Liang, H. Kim, H.-G.Jung, Y.-K, Sun, Adv. Funct. Mater. 31 (2021) 2008569.

基金

暂无数据

补充材料

暂无数据

附加信息

利益冲突

None declared.

数据可用性声明

The datasets generated during and/or analyzed during the current study are available from the corresponding_author author on reasonable request.

知识共享许可协议

Copyright © 2022 Liang et al. This is an open access work distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.