Long‐lasting, reinforced electrical networking in a high‐loading Li<sub>2</sub>S cathode for high‐performance lithium–sulfur batteries
نویسندگان
چکیده
Realizing a lithium sulfide (Li2S) cathode with both high energy density and long lifespan requires an innovative design that maximizes electrochemical performance resists electrode deterioration. Herein, high-loading Li2S-based micrometric Li2S particles composed of two-dimensional graphene (Gr) one-dimensional carbon nanotubes (CNTs) in compact geometry is developed, the role CNTs stable cycling high-capacity Li–S batteries emphasized. In dimensionally combined matrix, embedded within Gr sheets create robust sustainable electron diffusion pathways while suppressing passivation active surface. As unique point, during first charging process, proposed fully activated through direct conversion into S8 without inducing polysulfide formation. The composite ubiquitously investigated using study situ Raman spectroscopy, optical microscopy, cryogenic transmission microscopy. demonstrates unprecedented properties even loading 10 mg cm–2; particular, practical safe full cell coupled graphite anode shows ultra-long-term stability over 800 cycles.
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ژورنال
عنوان ژورنال: Carbon energy
سال: 2023
ISSN: ['2096-9570', '2637-9368']
DOI: https://doi.org/10.1002/cey2.308