Stacking Fault Formation in LiNi_0.6Co_0.2Mn_0.2O₂ during Cycling: Fundamental Insights into the Direct Recycling of Spent Lithium-Ion Batteries.

ABSTRACT: As the global marketplace for lithium-ion batteries (LIBs) proliferates, technologies for efficient and environmentally friendly recycling, i.e., direct recycling, of spent LIBs are urgently required. In this contribution, we elucidated the mechanisms underlying the degradation that occurs during the cycling of a Li/LiNi_0.6Co_0.2Mn_0.2O₂ (NCM622) cell. The results provided fundamental insights into the optimum procedures for direct recycling using a recently developed, state-of-the-art positive electrode material. Capacity fade in NCM622 was induced by cycling at high voltages above 4.6 V vs Li⁺/Li, during which the rhombohedral symmetry approached cubic symmetry. The selective line broadening and peak shifts that appeared in the X-ray d

SUBMITTER: Mukai K 

PROVIDER: S-EPMC10634112 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature