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Suppressing Li Metal Dendrites Through a Solid Li‐Ion Backup Layer

Salvatierra, Rodrigo V. ; López‐Silva, Gladys A. ; Jalilov, Almaz S. ; Yoon, Jongwon ; Wu, Gang ; Tsai, Ah‐Lim ; Tour, James M.

Advanced materials (Weinheim), 2018-12, Vol.30 (50), p.e1803869-n/a [Periódico revisado por pares]

Germany: Wiley Subscription Services, Inc

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  • Título:
    Suppressing Li Metal Dendrites Through a Solid Li‐Ion Backup Layer
  • Autor: Salvatierra, Rodrigo V. ; López‐Silva, Gladys A. ; Jalilov, Almaz S. ; Yoon, Jongwon ; Wu, Gang ; Tsai, Ah‐Lim ; Tour, James M.
  • Assuntos: Anode effect ; Anodic protection ; Batteries ; dendrites ; Discharge ; Energy storage ; Ion charge ; Ion flux ; lithiated carbon nanotubes ; Lithium ions ; lithium metal anodes ; Materials science ; Multi wall carbon nanotubes ; post‐lithium‐ion batteries ; Product safety ; sulfur cathodes
  • É parte de: Advanced materials (Weinheim), 2018-12, Vol.30 (50), p.e1803869-n/a
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descrição: The growing demand for sustainable and off‐grid energy storage is reviving the attempts to use Li metal as the anode in the next generation of batteries. However, the use of Li anodes is hampered due to the growth of Li dendrites upon charging and discharging, which compromises the life and safety of the battery. Here, it is shown that lithiated multiwall carbon nanotubes (Li‐MWCNTs) act as a controlled Li diffusion interface that suppresses the growth of Li dendrites by regulating the Li+ ion flux during charge/discharge cycling at current densities between 2 and 4 mA cm−2. A full Li‐S cell is fabricated to showcase the versatility of the protected Li anode with the Li‐MWCNT interface, where the full cells could support pulse discharges at high currents and over 450 cycles at different rates with coulombic efficiencies close to 99.9%. This work indicates that carbon materials in lithiated forms can be an effective and simple approach to the stabilization of Li metal anodes. A full Li–S cell is fabricated to showcase the versatility of a protected Li anode with a lithiated multiwall carbon nanotube interface. The full cells support pulse discharges at high currents and over 450 cycles at different rates with coulombic efficiencies close to 99.9%. Carbon materials in lithiated forms are an effective and simple approach to the stabilization of Li metal anodes.
  • Editor: Germany: Wiley Subscription Services, Inc
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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