ZIF 유래 질소 도핑 탄소에 고정된 Co 단원자 촉매 기반 고성능 알루미늄–황 전지 양극 소재 연구
ZIF-derived Co single-atom catalysts in nitrogen-doped carbon for high-performance aluminum–sulfur batteries
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Abstract
In this study, we report a sulfur-loaded cobalt single-atom catalyst–nitrogen-doped porous carbon composite (S@Co-NC) as a promising cathode material for aluminum–sulfur batteries. The material was derived from a zeolitic imidazolate framework (ZIF) precursor and carbonized to yield a polyhedral, high-surface-area carbon structure. Cobalt atoms were atomically dispersed via nitrogen coordination, and sulfur was efficiently infused into the porous matrix. The S@Co-NC electrode exhibited a high initial discharge capacity and maintained 411 mAh g-1over 100 cycles over 93% Coulombic efficiency. These improvements are attributed to the catalytic role of single-atom Co and the polysulfide-trapping capability of the N-doped carbon. This work highlights the potential of single-atom catalyst design for next-generation aluminum–sulfur batteries.