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Surface Modifications of Positive-Electrode Materials for Lithium Ion Batteries

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Lithium ion batteries are typically based on one of three positive-electrode materials, namely layered oxides, olivine- and spinel-type materials. The structure of any of them is 'resistant' to electrochemical cycling, and thus, often requires modification/post-treatment to improve a certain property, for example, structural stability, ionic and/or electronic conductivity. This review provides an overview of different examples of coatings and surface modifications used for the positive-electrode materials as well as various characterization techniques often chosen to confirm/detect the introduced changes. It also assesses the electrochemical success of the surface-modified positive-electrode materials, thereby highlighting remaining challenges and pitfalls.
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Keywords: CYCLING STABILITY; LI-ION BATTERIES; POSITIVE ELECTRODES; SURFACE COATING; TAILORING SURFACE PROPERTIES

Document Type: Research Article

Affiliations: 1: Department of Chemistry, University of Fribourg, Chemin du Musee 9, CH-1700 Fribourg 2: Department of Chemistry, University of Fribourg, Chemin du Musee 9, CH-1700 Fribourg; Cadi Ayyad University (Marrakech, Morocco)

Publication date: November 1, 2019

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  • International Journal for Chemistry and Official Membership Journal of the Swiss Chemical Society (SCS) and its Divisions

    CHIMIA, a scientific journal for chemistry in the broadest sense, is published 10 times a year and covers the interests of a wide and diverse readership. Contributions from all fields of chemistry and related areas are considered for publication in the form of Review Articles and Notes. A characteristic feature of CHIMIA are the thematic issues, each devoted to an area of great current significance.

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