Lithium metal is considered as a promising anode material for next-generation lithium batteries. However, challenges remain in terms of stability and cycle life in practical applications of lithium metal anodes. Herein, a lithium metal composite anode with a LiSn alloy coupled with a three-dimensional interconnected ZIF-67-derived carbon-modified carbon cloth (LiSn@CN@CC) is fabricated via the interface engineering and alloying strategy. The LiSn alloy as the nucleation center and Li₃N as lithophilic sites jointly promoted the uniform deposition of lithium, and the prepared electrodes effectively mitigate the volume expansion in Sn. Consequently, the LiSn@CN@CC||LiSn@CN@CC cell demonstrates favorable performance with enhanced long-term cyclic stability of over 1800 h at 1.0 mA cm^–2 and 1.0 mAh cm^–2 and an ultralow nucleation overpotential of 15 mV after 1400 h. Impressively, the LiSn@CN@CC||LiFePO₄ cell delivers a high capacity retention of 83.4% at 1 C after 300 cycles.

中文翻译：

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原位构建三维亲锂碳骨架的协同界面工程和合金化策略：激发高性能锂金属电池

锂金属被认为是下一代锂电池有前途的负极材料。然而，锂金属负极在实际应用中的稳定性和循环寿命方面仍然存在挑战。在此，通过界面工程和合金化策略制备了具有LiSn合金与三维互连ZIF-67衍生的碳改性碳布（LiSn@CN@CC）的锂金属复合负极。以LiSn合金作为成核中心和Li ₃ N作为亲石位点共同促进了锂的均匀沉积，所制备的电极有效地缓解了Sn中的体积膨胀。因此，LiSn@CN@CC||LiSn@CN@CC电池表现出良好的性能，在1.0 mA cm ^–2和1.0 mAh cm ^–2下超过1800小时的长期循环稳定性增强，以及15 mV的超低成核过电势1400小时后。令人印象深刻的是，LiSn@CN@CC||LiFePO ₄电池在 1 C 下经过 300 次循环后容量保持率高达 83.4%。