Carbon-nanofiber composite electrodes for thin and flexible lithium-ion batteries

摘要: Addition of vapor-grown carbon nanofiber (VGCF) into a LiCoO2 composite electrode increases electrode’s conductivity and adhesion strength significantly. These are attributed to the uniform distribution network-like VGCF high conductivity; not only connects surface active materials, its network penetrates each material particle. also improves electrochemical performance thin flexible lithium-ion batteries such as discharge capacity at current densities, cycle-life stability, low-temperature (at −20 °C) capacity. improved properties well-distributed nanofibers, VGCF, within cathode. The addition reduces electron conducting resistance decreases diffusion path for lithium ions, hence utilization materials during high-current discharge. In addition, forms more cathode structure so have lower deterioration rate correspondingly better life cycle stability.