BiSb anchored in a 3D carbon foam matrix serves as a novel honeycomb-like cathode for aluminum batteries

Due to advances in battery tech and the growing adoption of renewable power generation, aluminum batteries are a very exciting technology that could become one of the main forms of energy storage in the not-too-distant future. In this manuscript, a novel honeycomb-shaped cathode material BiSb@CF for aluminum battery is designed, which anchors BiSb within the pores of a 3D interconnected carbon foam (CF). This structure perfectly combines the high capacity of BiSb with the high conductivity and mechanical stability of CF, while simultaneously increasing the contact area between the cathode material and the electrolyte. Compared to pristine BiSb, BiSb@CF exhibits superior electrochemical performance. At a current density of 0.1 A/g, it achieves a discharge capacity of 471.3 mAh/g, retaining 143.5 mAh/g after 400 cycles. Even at a current density of 0.8 A/g, the discharge capacity remains at 104.1 mAh/g. Download: Download high-res image (264KB) Download: Download full-size image