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首页> 外文期刊>Advanced energy materials >Electrokinetic Phenomena Enhanced Lithium-Ion Transport in Leaky Film for Stable Lithium Metal Anodes
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Electrokinetic Phenomena Enhanced Lithium-Ion Transport in Leaky Film for Stable Lithium Metal Anodes

机译：稳定锂金属阳极漏膜中锂离子输送的电动现象

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摘要

The application of lithium (Li) metal anodes in Li metal batteries has been hindered by growth of Li dendrites, which lead to short cycling life. Here a Li-ion-affinity leaky film as a protection layer is reported to promote a dendrite-free Li metal anode. The leaky film induces electrokinetic phenomena to enhance Li-ion transport, leading to a reduced Li-ion concentration polarization and homogeneous Li-ion distribution. As a result, the dendrite-free Li metal anode during Li plating/stripping is demonstrated even at an extremely high deposition capacity (6 mAh cm(-2)) and current density (40 mA cm(-2)) with improved Coulombic efficiencies. A full cell battery with the leaky-film protected Li metal as the anode and high-areal-capacity LiNi0.8Co0.1Mn0.1O2 (NCM-811) (approximate to 4.2 mAh cm(-2)) or LiFePO4 (approximate to 3.8 mAh cm(-2)) as the cathode shows improved cycling stability and capacity retention, even at lean electrolyte conditions.
机译：锂（Li）金属阳极在Li金属电池中的应用已经阻碍了Li Dendrites的生长，这导致循环寿命短。这里据报道，锂离子亲和漏膜作为保护层促进无树枝状的Li金属阳极。泄漏膜诱导电动现象来增强锂离子转运，导致锂离子浓度偏振和均匀锂离子分布降低。结果，即使在极高的沉积容量（6mAhcm（-2））和电流密度（40 mAcm（-2）），均匀地证明了锂镀/剥离期间的树突式的Li金属阳极，具有改善的库仑效率。具有泄漏膜保护的Li金属的全电池作为阳极和高级容量LiNi0.8Co0.1Mn0.1O2（NCM-811）（近似为4.2mah cm（-2））或LiFepo4（近似为3.8 Mah Cm（-2））由于阴极显示出改善的循环稳定性和容量保持，即使在贫电解质条件下也是如此。

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