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首页> 外文期刊>Nano Energy >Wettable carbon felt framework for high loading Li-metal composite anode
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Wettable carbon felt framework for high loading Li-metal composite anode

机译：高负荷Li金属复合阳极可湿的碳毡框架

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摘要

Li metal anode has received extensive attention due to its high specific capacity and low potential vs. Li/Li+ for lithium batteries. However, dendrite growth, volume change and "dead" Li formation during cycling hinder its practical application. Here we report an innovated cuprite-coated carbon felt as current collector, with ultralight 3D framework and significantly improved Li-metal loading through thermal infusion. The Li-metal anode has a high Li content of 90 wt.%. The cuprite coating improves the lithiophilicity of carbon felt remarkably, due to the surface affinity reaction between cuprite and Li. The porous carbon felt provides good electronic connection and buffer space to accommodate volume change during Li stripping/plating. It leads to uniformly distributed local current density and preference of Li stripping/plating in the highly dispersed concave areas, with suppressed formation of dendrites and "dead" Li. The Li composite electrode shows excellent cycle stability with low polarization in both symmetric and full cells. This work opens a new approach for the development of high loading Li composite anodes for advanced Li metal batteries.
机译：由于其锂电池的高特定容量和低电位与Li / Li +，Li金属阳极引起了广泛的关注。然而，循环障碍期间，树突生长，体积变化和“死”锂形成。在这里，我们报告了一种创新的铜矿涂层碳含量，作为集电器，通过热输注，具有超轻的3D框架和显着改善的Li-Metal负载。 Li-Metal阳极具有90重量％的高锂含量。％。由于铜矿和锂之间的表面亲和力反应，铜矿涂层显着提高了碳的锂纤维性。多孔碳毡提供良好的电子连接和缓冲空间，以适应Li剥离/电镀期间的体积变化。它导致均匀分布的局部电流密度和锂剥离/电镀在高度分散的凹形区域中的偏好，抑制树枝状和“死”锂的形成。锂复合电极显示出优异的循环稳定性，对称和全细胞中具有低偏振。这项工作开辟了一种新的李金属电池开发高负载锂复合阳极。

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