Title

Perspective-Surface Reactions of Electrolyte with LiNixCoyMnzO2Cathodes for Lithium Ion Batteries

Document Type

Article

Date of Original Version

1-6-2020

Abstract

Layered metal oxides with high nickel content are commonly used cathode materials in commercial lithium ion batteries due to high capacity and lower cost resulting from higher nickel content and lower cobalt content. Cathodes with increased nickel content suffer from rapid capacity fade due to a combination of thickening of the anode solid electrolyte interphase (SEI) and impedance growth on the cathode after extended cycling. While transition metal catalyzed degradation of the anode SEI has been widely proposed as a primary source of capacity loss, we propose that a related acid induced degradation of the anode SEI also occurs.

Publication Title

Journal of the Electrochemical Society

Volume

167

Issue

10

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