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Lithium metal anodesLithium metal anodes offer the highest theoretical capacity (3860 mAh g−1) for next-generation batteries but suffer from dendrite growth, volume fluctuations, voids, and dead Li formation during cycling, causing poor cycling capacity retention, low rate capability, and safety concerns. Herein, a synergistic anode architecture integrating a lithiophilic modified 3D skeleton3D skeleton with a protective coating layerProtective coating layer is prepared via roll-pressing/coating. This process enables scalable fabrication of ultrathin (≤50 μm) lithiumLithium metal composites with ≥ 80 × 80 mm2 dimensions. The lithiophilic 3D framework guides uniform Li+ flux and mitigates volume expansion, while the coating suppresses dendritesDendrite suppression and stabilizes interfaces. As a result, P-LiAgSn@Cu|P-LiAgSn@Cu symmetrical cells achieve a long lifespan over 600 h cycling at 1 mA cm−2 and 1 mAh cm−2. The performance of full cell against high nickel content NCM cathode (Ni92) achieves a capacity of 178 mAh g−1 at 1 C discharge with over 90% capacity retention after 100 cycles. This strategy demonstrates high-performance lithiumLithium metal batteries with scalable manufacturability.

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Stabilizing Lithium Metal Anodes Via 3D Skeleton Modification and Protective Coating Layer

  • 会议论文

  • 发表日期：

    2026年

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  • Shangyang Feng,
  • Qiongqiong Wang,
  • Li Xiang,
  • Zhengxin Li,
  • Hongxu Li

摘要

Lithium metal anodesLithium metal anodes offer the highest theoretical capacity (3860 mAh g−1) for next-generation batteries but suffer from dendrite growth, volume fluctuations, voids, and dead Li formation during cycling, causing poor cycling capacity retention, low rate capability, and safety concerns. Herein, a synergistic anode architecture integrating a lithiophilic modified 3D skeleton3D skeleton with a protective coating layerProtective coating layer is prepared via roll-pressing/coating. This process enables scalable fabrication of ultrathin (≤50 μm) lithiumLithium metal composites with ≥ 80 × 80 mm2 dimensions. The lithiophilic 3D framework guides uniform Li+ flux and mitigates volume expansion, while the coating suppresses dendritesDendrite suppression and stabilizes interfaces. As a result, P-LiAgSn@Cu|P-LiAgSn@Cu symmetrical cells achieve a long lifespan over 600 h cycling at 1 mA cm−2 and 1 mAh cm−2. The performance of full cell against high nickel content NCM cathode (Ni92) achieves a capacity of 178 mAh g−1 at 1 C discharge with over 90% capacity retention after 100 cycles. This strategy demonstrates high-performance lithiumLithium metal batteries with scalable manufacturability.