Competing with other polyanionic cathode materials for potassium-ion batteries via fine structure design: new layered KVOPO4 with a tailored particle morphology

Layered KVOPO₄ (L-KVOP) with a controllable morphology as a cathode material for potassium-ion batteries is proposed. The designed L-KVOP electrode displays a high average voltage (3.65 V) and high capacity (115 mA h g⁻¹).