Optimization of Recycled a-FePO₄/rGO Composites via Thermal Reduction for Enhanced-Performance Lithium-Ion Batteries.

ABSTRACT: In this study, spent LiFePO₄ (LFP) cathode materials were recycled and transformed into amorphous FePO₄ (a-FePO₄) via a leaching-precipitation method for further use as a high-performance cathode material in lithium-ion batteries. To enhance its electrochemical performance, a-FePO4 was composited with graphene oxide (GO) and subsequently reduced at different temperatures (250-450 °C) under N₂ atmosphere to obtain a series of a-FePO₄/rGO composites. Among them, the a-FePO₄-rGO-1 (reduced at 250 °C) exhibited the most superior performance, delivering a specific high discharge capacity of 117 mAh·g^-1 after 100 cycles at 1 C and an excellent rate capability of 98 mAh·g^-1 even at 10 C. Electrochemical impeda

SUBMITTER: Hu S 

PROVIDER: S-EPMC12610454 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature