Co3O4-graphene nanoflowers as anode for advanced lithium ion batteries with enhanced rate capability

摘要: Abstract The practical application of Co 3 O 4 base anode material is severely limited by its extremely low electrical conductivity and large specific volume changes during lithium ion insertion/extraction. Herein, an effective strategy being implemented to mitigate the capacity fading at high-rate embedding nanomaterial under reduced graphene oxide (CGF). CGF composite has been synthesized through a two-step process, involving hydrothermal reaction cobalt nitrate hexahydrate CTAB in presence (GO) subsequent calcination. When tested as batteries (LIBs), exhibits obvious enhancement electrochemical performance, especially rate capability. Under current density 1.0 A g -1 , could deliver reversible high 1120.8 mAh g −1 after 250 cycles. superior performance may be ascribed unique hybrid microstructure, which can alleviate stresses caused variations, reduce charge transfer resistance, improve accessibility electrolyte increase tapping density. results clearly demonstrate that this electrode architecture ideally suited for LIBs.