Thick electrode for energy storage systems: A facile strategy towards high energy density Li ion batteries

To satisfy the ever-growing demands for high energy density electrical vehicles and large-scale energy storage systems, thick electrode has been proposed and proven to be an effective way to achieve high energy density. However, the electrochemical performance of thick electrode is hindered by inferior mechanical stabilities, poor charge transport kinetics, severe lithiation heterogeneities and anabatic thermal risks, which block its step to commercialization. Herein, we reviewed the crucial issues arising in thick electrode, and provided latest insights into theoretical modeling and experimental design for next-generation LIBs electrodes by a combination of existing design methods and multiscale models. Then, we summarized recent advances in emerging architecture designs of thick electrodes for high-performance LIBs. Moreover, some in-depth underlying issues associated with thick electrode and possible solutions were taken into account.