TiO₂-LiF composite coating for improving NCM622 cathode cycling stability: one-step construction.

ABSTRACT: The Ni-rich NCM622 is a promising cathode material for future high energy lithium ion batteries, but unstable electrochemical performance of NCM622 hinder its large scale commercial application. The cycling peformance of nickel-rich LiNi_0.6Co_0.2Mn_0.2O₂ (NCM622) cathode materials can be improved by surface coating. Here, a one-step approach based on TiF₄ is used to successfully manufacture modified NCM622 cathode materials with a TiO₂-LiF coating. The TiO₂-LiF coated NCM622 preserves 79.7% capacity retention which is higher than the pure NCM622 (68.9%) at 1C after 200 cycles within 2.7-4.3 V. This material serves as the cathode for lithium-ion batteries (LIBs). The uniform TiO₂-LiF coating layer can alle

SUBMITTER: Huang K 

PROVIDER: S-EPMC10658221 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature