Flexible graphene-based lithium ion batteries with ultrafast charge and discharge rates

There is growing interest in thin, lightweight, and flexible energy storage devices to meet the special needs for next-generation, high-performance, flexible electronics. Here we report a thin, lightweight, and flexible lithium ion battery made from graphene foam, a three-dimensional, flexible, and conductive interconnected network, as a current collector, loaded with Li(4)Ti(5)O(12) and LiFePO(4), for use as anode and cathode, respectively. No metal current collectors, conducting additives, or binders are used. The excellent electrical conductivity and pore structure of the hybrid electrodes enable rapid electron and ion transport. For example, the Li(4)Ti(5)O(12)/graphene foam electrode shows a high rate up…

• NN
  National Natural Science Foundation of China

  Awards: 2012AA030303, 51172240, 50921004
• CA
  Chinese Academy of Sciences

  Award: KGZD-EW-303