A cobalt-doped Prussian blue analogue as an efficient catalytic confinement matrix for high-performance aluminum–sulfur batteries

Abstract

The development of cathode materials that combine effective polysulfide anchoring, and structural robustness is critical for advancing aluminum–sulfur (Al–S) battery performance. Herein, we propose a cobalt-based Prussian blue analogue (CoPBA) with a metal–organic framework structure as a cathode material for Al–S batteries. The S@CoPBA cathode exhibits a discharge capacity exceeding 414.0 mA h g⁻¹ after 650 cycles at a current density of 100 mA g⁻¹.