Two electrolyte decomposition pathways at nickel-rich cathode surfaces in lithium-ion batteries.

ABSTRACT: Preventing the decomposition reactions of electrolyte solutions is essential for extending the lifetime of lithium-ion batteries. However, the exact mechanism(s) for electrolyte decomposition at the positive electrode, and particularly the soluble decomposition products that form and initiate further reactions at the negative electrode, are still largely unknown. In this work, a combination of operando gas measurements and solution NMR was used to study decomposition reactions of the electrolyte solution at NMC (LiNi _x Mn _y Co_1-x-y O₂) and LCO (LiCoO₂) electrodes. A partially delithiated LFP (Li _x FePO₄) counter electrode was used to selectively identify the products forme

SUBMITTER: Rinkel BLD 

PROVIDER: S-EPMC9368649 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature