Journal
ADVANCED MATERIALS
Volume 31, Issue 33, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201901820
Keywords
lithium anodes; lithium dendrites; MXene
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Funding
- National Key R&D Program of China [2018YFB0104200] Funding Source: Medline
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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 (Ti3C2Tx) 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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