In recent years, flexible and foldable optoelectronic devices attract lots of attentions. Flexible electrodes offering light weight, high capacity and good cycling performance is of particular interest for lithium ion battery. Graphene, as one of the most potential flexible electrodes, has excellent electrical conductivity, thermal conductivity, flexibility and corrosion resistance. Flexible graphene electrodes have been already used in lithium ion batteries, super capacitors, solar cells and organic light-emitting diodes and other fields. However, as lithium-ion battery anode alone, graphene has low capacity compared to its theoretical capacity, poor cycling performance. Our group take advantages of various strategies to prepare a series of flexible graphene electrode materials with different morphologies, and improve the electrochemical properties by doping, etching and organic/inorganic composition. This work is supported by 973 Project of China（2013CB934700）.