Gelatin-Guided Synthesis of Bowknot-Like CoP Microstructure as an Anode for Lithium-Ion Batteries

Abstract

In the present study, it is proposed to achieve the synthesis of bowknot-like CoP microstructures via a facile hydrothermal method combined with a subsequent phosphorylation step. With improved lithium-ion diffusing channels and enhanced conductivity, the novel CoP microstructure is effective in promoting charge transport and maintaining structural integrity during the repeated charge/discharge process. The resulting bowknot-like CoP anode produces a better electrochemical performance, with a specific capacity of 421 mAh·g−1 over 800 cycles at 500 mA·g−1, and a specific capacity of 334 mAh·g−1 at 1000 mA·g−1 with coulombic efficiency of 98.8% after 1000 cycles.