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Boosting Interfacial Binding Force for Highly Efficient and Stable Lithium Metal Anodes
DOI:10.1002/ente.70622.png)
摘要
En 中文
无控制的锂枝晶生长和界面副反应严重限制了锂金属负极的性能。在此,我们提出了一种简单有效的方法,在锂金属上构建牢固附着的Ga–Sn层,形成Ga–Sn/Li复合负极。通过利用Ga基液态金属的自修复功能和强烈的Sn–Li相互作用,界面层均化Li+通量,促进锂均匀沉积,抑制副反应,并加速Li+传输动力学。因此,Ga–Sn/Li对称电池在1 mA cm−2和1 mAh cm−2下实现了1200 h的延长循环寿命。Ga–Sn/Li||NCM811全电池在0.5 C倍率下循环200次后容量仍保持125.7 mAh g−1以上,容量保持率为86.7%。本研究为锂金属负极的实际应用提出了一种简单方法,并展示了Ga–Sn合金界面的潜力。
Keyword:
accelerate Li+ transfer kinetics
dendrite suppression
Ga–Sn alloy interfacial layer
interfacial adhesion
Li metal anode
期刊
IF:
3.6
论文数:
4.4K
被引数:
1.1W
机构
引用论文
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JOULE
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ADVANCED MATERIALS
IF26.8
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