团队与南华大学合作论文"Synergistic acids induced rapid cathode dissociation for material-oriented recycling of spent lithium-ion batteries"被Materials Today接收发表
发布时间：2026-08-17
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Recycling spent lithium-ion batteries (LIBs) demands time-efficient, short-process material recycling routes that enable rapid regeneration of battery materials. Here, we report a material-oriented recycling strategy in which synergistic acid chemistry enables ultrafast cathode dissociation, followed by spray pyrolysis–assisted regeneration of battery materials in a streamlined process. Cathode layers are rapidly exfoliated from aluminium (Al) foil within 5 min at 25 °C, with minimal Al dissolution (<2.6%), allowing clean separation of the current collector. After removal of the detached Al foil, the cathode materials undergo ultrafast lattice deconstruction, achieving ∼98% recovery of Li and transition metals (TMs) within 10 min at 85 °C at a record-high 300 g·L−1 using near-stoichiometric acid consumption. Such accelerated kinetics originate from the synergistic acid chemistry that destabilizes transition-metal–oxygen frameworks in the cathode lattice. Beyond metal extraction, the leachate is directly converted via spray pyrolysis into Li2SO4 and TM oxide precursors, enabling subsequent synthesis of battery-grade Li2CO3 and regenerated cathode materials. This work establishes a short-process, high-throughput, material-oriented recycling paradigm for spent LIBs, offering a viable pathway toward sustainable closed-loop battery material recovery.