Designing High-Performance Dual-Ion Batteries at High-Voltage: Challenges, Strategies, and Prospects

Abstract Dual-ion batteries (DIBs) have emerged as a promising next-generation energy storage technology with compelling advantages induced by anion intercalation mechanism, including high operating voltage (> 4.8 V), abundant raw materials of dual-carbon electrodes, intrinsic electrode safety, and environmental friendliness. However, this mechanism at the cathode side leads to new challenges different from conventional lithium-ion batteries, such as high-voltage electrolyte decomposition, so