Graphene and cobalt phosphide nanowire composite as an anode material for high performance lithium-ion batteries
cobalt phosphide, nanowires, anodes, lithium-ion battery
The synthesis of a composite of cobalt phosphide nanowires and reduced graphene oxide (denoted CoP/RGO) via a facile hydrothermal method combined with a subsequent annealing step is reported. The resulting composite presents large specific surface area and enhanced conductivity, which can effectively facilitate charge transport and accommodates variations in volume during the lithiation/de-lithiation processes. As a result, the CoP/RGO nanocomposite manifests a high reversible specific capacity of 960 mA·h·g–1 over 200 cycles at a current density of 0.2 A·g–1 (297 mA·h·g–1 over 10,000 cycles at a current density of 20 A·g–1) and excellent rate capability (424 mA·h·g–1 at a current density of 10 A·g–1).
Tsinghua University Press
Jun Yang,Yu Zhang,Chencheng Sun,Hongzheng Liu,Laiquan Li,Weili Si,Wei Huang,Qingyu Yan,Xiaochen Dong, Graphene and cobalt phosphide nanowire composite as an anode material for high performance lithium-ion batteries. NanoRes.2016, 9(3): 612–621