Ultrathin and highly-ordered CoO nanosheet arrays for lithium-ion batteries with high cycle stability and rate capability

Ultrathin and highly-ordered 2D CoO nanosheet arrays (NSAs) composed of nanocrystals were fabricated via a facile galvanostatic electrodeposition technique. The as-prepared CoO NSAs exhibit excellent cyclability (retain 1000 mA h g(-1) after 100 cycles at 1 A g(-1)) and rate capability (520 mA h g(-1) at 10 A g(-1)) when they are directly used as an anode for LIBs.