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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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Publication details

The article was received on 17 Jul 2018, accepted on 19 Sep 2018 and first published on 22 Oct 2018


Article type: Review Article
DOI: 10.1039/C8TA06875E
Citation: J. Mater. Chem. A, 2018,6, 21859-21884
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    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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