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Title: A highly flexible semi-tubular carbon film for stable lithium metal anodes in high-performance batteries

Journal Article · · Nano Energy

As the lightest and most electropositive material, lithium metal is regarded as the ultimate anode material for next-generation high-energy batteries. However, uncontrolled dendritic lithium growth as well as low Coulombic efficiency hinders its widespread application in secondary batteries. Interfacial modification of anodes with protective layers has been proved to be an effective way to inhibit the growth of ramified lithium. We report on a freestanding, highly flexible nanostructured carbon film, which is ready to be transferred onto electrodes with great ease. We show that such mechanically robust carbon films can effectively suppress the growth of Li dendrites upon cycling at practical current densities (0.25–1.0 mA cm-2) with significantly improved Coulombic efficiency up to ~99.5% for over hundreds of cycles and thousands of operation hours. Notably, this semi-tubular carbon film demonstrated instant, reliable protection to electrodes in not only reactive electrolytes but also ambient environment with high humidity, offering a practically feasible route toward the dendrite-free lithium metal batteries.

Research Organization:
Univ. of Houston, TX (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
SC0010831; DOE DE-SC0010831
OSTI ID:
1534147
Alternate ID(s):
OSTI ID: 1550354
Journal Information:
Nano Energy, Vol. 38, Issue C; ISSN 2211-2855
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 71 works
Citation information provided by
Web of Science

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