A conversion and pseudocapacitance-featuring cost-effective perovskite fluoride KCuF 3 for advanced lithium-ion capacitors and lithium-dual-ion batteries.

A cost-effective perovskite fluoride KCuF3 material has been introduced as an advanced anode for lithium-ion capacitors (LICs) and lithium-dual-ion batteries (Li-DIBs), showing a conversion mechanism and pseudocapacitive kinetics for Li ion storage.