Lithium ion battery (LIB) electrodes operate in severe regimes that cause partial decomposition of the electrolyte solutions, resulting in the formation of electrode surface films. On graphitic anodes, this film, the solid-electrolyte interphase (SEI), is extremely important because it protects the graphite from exfoliation during cycling. At cathodes, stable surface films can protect the electrolyte from further breakdown that increases cationic resistance through thicker film formation and lithium inventory loss In recent years much attention has focused on the use of additives such as lithium bis(oxalato)borate (LiBOB) and vinylene carbonate (VC) to electrolyte solutions that can stabilize these SEI films at both electrodes.
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