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

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Authors

Xinghui Liang¹ , Rizki Ismoyojati¹ , Yang-Kook Sun¹

1. Hanyang University

Conference / event

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

Poster summary

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.

Keywords

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

Research areas

Chemistry, Material Sciences, Energy Engineering

References

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.

Funding

No data provided

Supplemental files

No data provided

Additional information

Competing interests

None declared.

Data availability statement

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

Creative Commons license

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.