阳极
材料科学
锂(药物)
电解质
成核
氟化锂
金属锂
电镀(地质)
剥离(纤维)
电极
化学工程
枝晶(数学)
无机化学
复合材料
化学
工程类
有机化学
物理化学
内分泌学
几何学
地质学
医学
数学
地球物理学
作者
Di Zhang,Shuai Wang,Bin Li,Yongji Gong,Shubin Yang
标识
DOI:10.1002/adma.201901820
摘要
Although metallic lithium is an extremely promising anode for lithium-based batteries due to its high theoretical capacity, the uncontrollable growth of lithium dendrites, in particular under deep stripping and plating, have stagnated its application. It is demonstrated that parallelly aligned MXene (Ti3 C2 Tx ) layers enable the efficient guiding of lithium nucleation and growth on the surface of 2D MXene nanosheets, giving rise to horizontal-growth lithium anodes. Moreover, the inherent fluorine terminations in MXene afford a uniform and durable solid electrolyte interface with lithium fluoride at the anode/electrolyte interface, efficiently regulating electromigration of lithium ions. Thus, a dendrite-free lithium anode with a long cycle life up to 900 h and excellent deep stripping-plating capabilities up to 35 mAh cm-2 is achieved, which can further serve as an anode for a lithium metal battery, exhibiting high cycle stability up to 1000 cycles.
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