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    Lithiation MXene Derivative Skeletons for Wide-Temperature Lithium Metal Anodes

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    Type
    Article
    Authors
    Wang, Jinming
    Yang, Meng
    Zou, Guodong
    Liu, Di
    Peng, Qiuming cc
    KAUST Department
    Physical Science and Engineering (PSE) Division
    Date
    2021-03-18
    Online Publication Date
    2021-03-18
    Print Publication Date
    2021-05
    Embargo End Date
    2022-03-18
    Submitted Date
    2021-02-03
    Permanent link to this record
    http://hdl.handle.net/10754/668148
    
    Metadata
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    Abstract
    Lithium (Li) metal, as an appealing candidate for the next-generation of high-energy-density batteries, is plagued by its safety issue mainly caused by uncontrolled dendrite growth and infinite volume expansion. Developing new materials that can improve the performance of Li-metal anode is one of the urgent tasks. Herein, a new MXene derivative containing pure rutile TiO2 and N-doped carbon prepared by heat-treating MXene under a mixing gas, exhibiting high chemical activity in molten Li, is reported. The lithiation MXene derivative with a hybrid of LiTiO2-Li3N-C and Li offers outstanding electrochemical properties. The symmetrical cell assembling lithiation MXene derivative hybrid anode exhibits an ultra-long cycle lifespan of 2000 h with an overpotential of ≈30 mV at 1 mA cm−2, which overwhelms Li-based anodes reported so far. Additionally, long-term operations of 34, 350, and 500 h at 10 mA cm−2 can be achieved in symmetrical cells at temperatures of −10, 25, and 50 °C, respectively. Both experimental tests and density functional theory calculations confirm that the LiTiO2-Li3N-C skeleton serves as a promising host for Li infusion by alleviating volume variation. Simultaneously, the superlithiophilic interphase of Li3N guides Li deposition along the LiTiO2-Li3N-C skeleton to avoid dendrite growth.
    Citation
    Wang, J., Yang, M., Zou, G., Liu, D., & Peng, Q. (2021). Lithiation MXene Derivative Skeletons for Wide-Temperature Lithium Metal Anodes. Advanced Functional Materials, 2101180. doi:10.1002/adfm.202101180
    Sponsors
    The authors greatly acknowledge the financial support from National Natural Science Foundation-Outstanding Youth Foundation (51771162, 51971194) and Hebei Province Talent project (A201910002). They would like to express their gratitude to Ministry of Education Yangtze River scholar professor Program.
    Publisher
    Wiley
    Journal
    Advanced Functional Materials
    DOI
    10.1002/adfm.202101180
    Additional Links
    https://onlinelibrary.wiley.com/doi/10.1002/adfm.202101180
    ae974a485f413a2113503eed53cd6c53
    10.1002/adfm.202101180
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division

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