Favorable composite electrodes for all-solid-state batteries

Abstract

All-solid-state batteries show great promise as next-generation batteries with high safety, high power, and long life. In addition to high-performance active electrode materials and solid electrolytes, the properties of the electrode–electrolyte interface and the morphology of the electrode layer are important for the development of high-performance batteries. In this review, current research and future prospects for the design of composite electrodes for all-solid-state batteries are outlined. In order to achieve high-performance all-solid-state batteries, composite electrodes must satisfy a number of requirements. The resistance at the electrode–electrolyte interface must be minimal, the contact area between the electrode and solid electrolyte must be maximized, favorable lithium-ion and electron conducting pathways must be formed in the electrode layer. Maintenance of the formed interface is important to enhance cyclability. In this review, some effective approaches to construct better composite electrodes are demonstrated.