Spongy Co3O4 Wrapped Flexible Carbon Cloth by Electrodeposition as an Anode for Lithium-Ion Batteries

Herein, electrodeposition and subsequent oxidation were used to successfully construct a spongy flexible Co3O4/carbon cloth electrode with a controlled structure. It can deliver an efficient electron/ion transport network, ease Co3O4 volume expansion, and permit superior kinetics with a higher capacitive contribution; moreover, the preparation of Co3O4/carbon cloth by electrodeposition does not require a binder, making it highly conductive, and the Co3O4/carbon cloth also has high flexibility and can withstand multiple bending. This Co3O4/CC composite electrode, as expected, provides a high capacity of 708 mAh g(-1) at a current density of 0.5 A g(-1) after 200 cycles, and it has lower impedance (56.08 omega). After 300 times of bending, its capacity is stable at 682 mAh g(-1) at 0.5 A g(-1) after 200 cycles, which is 96% of that before bending.