A rechargeable aluminum-ion battery utilizing a copper hexacyanoferrate cathode in an organic electrolyte

Abstract

Reversible aluminum intercalation/deintercalation from an organic electrolyte into copper hexacyanoferrate is presented. Evidence suggest that an aluminum–solute complex is the intercalating species. The system shows initial discharge capacities as high as 60 mA h g⁻¹ and reversible capacities between 5 and 14 mA h g⁻¹, with capacity typically fading after 10 to 15 cycles.