Indium Phosphide/Reduced Graphene Oxide Composites as High‐Performance Anodes in Lithium‐Ion Batteries

Abstract

AbstractIndium phosphide/reduced graphene oxide (InP/rGO) composites were synthesized successfully through a facile one‐step route at 180 °C. The InP nanoparticles can be anchored uniformly on the surface of rGO nanosheets, forming a stable composite. Moreover, the size and dispersibility of InP nanoparticles can be greatly affected by the added rGO amount. The as‐prepared InP/rGO composites show better electrochemical performance than single‐component rGO nanosheets or InP nanoparticles. But, when the amount of rGO added is 5 mg, the electrochemical performance of InP/rGO composite is optimum. It delivers an initial discharge capacity of 1872 mAh g−1 and the reversible specific discharge capacity can remain at 689 mAh g−1 after 100 cycles at a current density of 100 mA g−1. Even at a current density of 500 mA g−1, the reversible specific capacity could still reach 500 mAh g−1. The enhanced electrochemical performances of as‐prepared composites might be attributed to the strong interaction between InP nanoparticles and rGO nanosheets.