High Potassium Storage Capability of H2V3O8 in a Non- Aqueous Electrolyte

摘要

Potassium-ion batteries (KIBs) are one of the potential candidates for large-scale energy storage devices with low cost due to the abundance of potassium resources. However, the development of cathode materials with high capacity and structural stability has been a challenge due to the difficulties of intercalation of the large size of K-ions into host materials. In this work, H2V3O8 (or V3O7·H2O) is reported as a new cathode material for KIBs.