Lithium metal anode (LMA) has been used as a promising anode material for designing high-energy-density lithium metal batteries (LMBs). However, the traditional plain Li foil anode will cause Li dendrite growth owing to the lithium-ion nonuniform deposition. Here, the dual conducting ion-electron channel composite lithium powder anode (CLPA) was designed, which is composed of rGO@LLZTO (rGO: reduced graphene oxide, LLZTO: Li_6.75La₃Zr_1.75Ta_0.25O₁₂) and lithium powder (rGO@LLZTO@Li CLPA). The prepared rGO@LLZTO@Li CLPA can guide uniform Li nucleation for inhibiting Li dendrite growth. Moreover, the Li//Li symmetric cells or Li//Cu asymmetric cells assembled with the rGO@LLZTO@Li CLPA exhibit superior electrochemical performance. Furthermore, the Li//LiFePO₄ or Li//LiNi_0.8Co_0.1Mn_0.1O₂ asymmetric cells also demonstrate an improved cycling stability and rate property, presenting its great potential application as LMA for next-generation LMBs.

中文翻译：

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用于高能量密度锂金属电池的具有双导电离子-电子通道的rGO@LLZTO@Li复合锂粉阳极的设计新策略


锂金属负极（LMA）已被用作设计高能量密度锂金属电池（LMB）的有前途的负极材料。然而，传统的普通锂箔负极由于锂离子沉积不均匀，会导致锂枝晶生长。本文设计了双导电离子电子通道复合锂粉阳极（CLPA），其由rGO@LLZTO（rGO：还原氧化石墨烯，LLZTO：Li _6.75 La ₃ Ta _0.25 O ₁₂ ）和锂粉（rGO@LLZTO@Li CLPA）。制备的rGO@LLZTO@Li CLPA可以引导均匀的锂成核，从而抑制锂枝晶的生长。此外，与rGO@LLZTO@Li CLPA组装的Li//Li对称电池或Li//Cu不对称电池表现出优异的电化学性能。进一步地，Li//LiFePO ₄ 或Li//LiNi _0.8 Co _0.1 Mn _0.1 O ₂ 不对称电池还表现出改善的循环稳定性和倍率特性，展示了其作为下一代 LMB 的 LMA 的巨大潜在应用。