Issue 24, 2023

Depressed P3–O3′ phase transition in an O3-type layered cathode for advanced sodium-ion batteries

Abstract

O3-type layered oxides are regarded as promising cathode materials for sodium-ion batteries (SIBs). However, they commonly exhibit complex phase transitions and sluggish Na+ kinetics, thus incurring poor capacity retention and rate capability. Here, O3-Na0.993Ni0.382Mn0.428Cu0.098Sn0.049O2 is obtained with Cu2+ and Sn4+ doped into the transition metal layers. It is found that the dopants Sn and Cu can enhance the electrostatic interactions between Na and O and improve the electrical conductivity, respectively. This reinforces its structure stability upon Na+ (de)intercalation and suppresses the Na+/vacancy rearrangement and the P3 → O3′ phase transition at high voltages. It exhibits a smooth charge/discharge curve, excellent cycling performance (80.7% capacity retention after 500 cycles) and good rate capability (108.5 mA h g−1 at 1000 mA g−1). This study provides new insights into designing novel layered oxide cathode materials for SIBs.

Graphical abstract: Depressed P3–O3′ phase transition in an O3-type layered cathode for advanced sodium-ion batteries

Supplementary files

Article information

Article type
Research Article
Submitted
17 sep 2023
Accepted
27 okt 2023
First published
27 okt 2023

Inorg. Chem. Front., 2023,10, 7187-7192

Depressed P3–O3′ phase transition in an O3-type layered cathode for advanced sodium-ion batteries

Z. Liang, M. Ren, Y. Guo, T. Zhang, X. Gao, H. Ma and F. Li, Inorg. Chem. Front., 2023, 10, 7187 DOI: 10.1039/D3QI01884A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements