Effect of Continuous Capacity Rising Performed by FeS/Fe₃ C/C Composite Electrodes for Lithium-Ion Batteries.

ABSTRACT: FeS-based composites are sustainable conversion electrode materials for lithium-ion batteries, combining features like low cost, environmental friendliness, and high capacities. However, they suffer from fast capacity decay and low electron conductivity. Herein, novel insights into a surprising phenomenon of this material are provided. A FeS/Fe₃ C/C nanocomposite synthesized by a facile hydrothermal method is compared with pure FeS. When applied as anode materials for lithium-ion batteries, these two types of materials show different capacity evolution upon cycling. Surprisingly, the composite delivers a continuous increase in capacity instead of the expected capacity fading. This unique behavior is triggered by a catalyzing effect of Fe₃ C nanoparticles. The Fe₃

SUBMITTER: Li C 

PROVIDER: S-EPMC7079246 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature