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Issue 44, 2018
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Chemomechanical behaviors of layered cathode materials in alkali metal ion batteries

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Abstract

Layered cathode materials (LCMs), because of their high energy density and relatively stable performance, represent an important class of cathode materials for alkali metal ion (e.g., Li+ and Na+) batteries. Chemomechanical behaviors of LCMs, which affect battery performance dramatically, have drawn extensive attention in recent years. Most chemomechanical processes have some common chemical and structural origins that are at the center of materials chemistry, for example, defects and local bonding environments in the solid state. In this review, we first discuss the chemomechanical breakdown of LCMs by introducing their categories and negative effects on the battery performance. We then systematically analyze factors that govern the initiation and propagation of chemomechanical breakdown and summarize their formation mechanisms. Strategies that can enhance the chemomechanical properties of LCMs or reduce the destructive effects of chemomechanical breakdown are then discussed. Finally, light is shed on the new state-of-the-art techniques that have been applied to study chemomechanical breakdown. This review virtually includes most aspects of the chemomechanical behaviors of LCMs and provides some insights into the important chemical motifs that determine the chemomechanical properties. Therefore, we believe that advanced design protocols of LCMs can be developed to effectively address the chemomechanical breakdown issue of LCMs.

Graphical abstract: Chemomechanical behaviors of layered cathode materials in alkali metal ion batteries

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Article information


Submitted
17 Jul 2018
Accepted
19 Sep 2018
First published
22 Oct 2018

J. Mater. Chem. A, 2018,6, 21859-21884
Article type
Review Article
Author version available

Chemomechanical behaviors of layered cathode materials in alkali metal ion batteries

Z. Xu, M. M. Rahman, L. Mu, Y. Liu and F. Lin, J. Mater. Chem. A, 2018, 6, 21859 DOI: 10.1039/C8TA06875E

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