Air-stable Li₅FeO₄ additive enabled by carbon coating for energy-dense lithium-ion batteries.

ABSTRACT: Li₅FeO₄ is a promising pre-lithiation additive for the positive electrode in lithium-ion batteries, offering the potential to enhance energy density. However, its susceptibility to air degradation presents a significant challenge for commercialization. In this study, we develop an effective carbon coating strategy utilizing pitch to improve the air stability of Li₅FeO₄. The coating process results in the formation of a compact carbon layer on the surface of Li₅FeO₄ particles, enabling the coated Li₅FeO₄ to retain a high specific capacity of 743.4 mAh g^-1 after 72 h of exposure to air with 20% relative humidity. This retention represents 92.3% of its initial capacity and 85.7% of its theoretic

SUBMITTER: Liu C 

PROVIDER: S-EPMC12361486 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature