Issue 35, 2023

An in situ formed inorganic conductive network enables high stability and rate capability of single-crystalline nickel-rich cathodes

Abstract

Single-crystalline Ni-rich cathodes are promising for the next generation of high-energy-density Li-ion batteries due to their better capacity retention than their polycrystalline counterparts. However, there is still much room for improving the electrochemical performances when considering their surface degradation and severe kinetic hindrance during cycling. Herein, we report a strategy to construct an in situ formed robust Li-conductive Li3PO4 layer on the surface of cathode particles. This Li-conductive layer significantly increases the Li-ion diffusion coefficients and suppresses detrimental surface phase transformation. In situ XRD reveals that the improved kinetics alleviate the local stress at high voltage. The as-prepared single-crystalline LiNi0.83Co0.12Mn0.05O2 delivers good durability (96.8% after 100 cycles at 1C) and excellent rate capability (177.08 mA h gāˆ’1 at 5C). This work provides a facile and efficient strategy to improve the cycling performance and boost the rate capability of single-crystalline Ni-rich cathodes.

Graphical abstract: An in situ formed inorganic conductive network enables high stability and rate capability of single-crystalline nickel-rich cathodes

Supplementary files

Article information

Article type
Paper
Submitted
28 Apr 2023
Accepted
27 Jul 2023
First published
28 Jul 2023

J. Mater. Chem. A, 2023,11, 18713-18722

An in situ formed inorganic conductive network enables high stability and rate capability of single-crystalline nickel-rich cathodes

X. Chen, Y. Tang, Z. Zhang, M. Ahmad, I. Hussain, T. Li, S. Lan, K. Zhang and Q. Liu, J. Mater. Chem. A, 2023, 11, 18713 DOI: 10.1039/D3TA02538A

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