A novel porous C 4 N 4 monolayer as a potential anchoring material for lithium–sulfur battery design

Release Time:2025-04-30  Hits:

• Date:2025-04-30
• Title of Paper:A novel porous C 4 N 4 monolayer as a potential anchoring material for lithium–sulfur battery design
• Journal:Journal of Materials Chemistry A
• Summary:Lithium–sulfur (Li–S) batteries have attracted considerable attention due to high theoretical specific energy and environmental friendliness. However, the shuttle of lithium polysulfides (LiPSs) has become a major obstacle for developing Li–S batteries. In this work, we explored a new C 4 N 4 monolayer, which could be easily prepared from its bulk form using a similar mechanical exfoliation approach to that of graphene due to its smaller exfoliation energy. The C 4 N 4 monolayer could suppress the shuttling of LiPSs and produce significant improvement in the cycling performance of Li–S batteries. Moreover, adsorption
  calculations revealed that polysulfide captured by C 4 N 4 was chemisorbed with a suitable range of
  adsorption energies from ?1.931 to ?3.119 eV. Furthermore, excellent surface diffusions of LiPSs on
  C 4 N 4 resulted in a fast charge/discharge rate. Moreover, to improve the electrical conductivity of C 4 N 4 ,graphyne was selected to construct a C 4 N 4 /graphyne heterostructure. Based on these remarkable
  results, we conclude that C 4 N 4 is a highly promising anchoring material for Li–S batteries. We hope that
  our studies will inspire more experimental and theoretical studies on exploring the potential of other 2D nanostructures as lithium–sulfur battery hosts.
• Co-author:T. T. Li, C. He*, W.X.Zhang
• Volume:2019, 7, 4134
• Page Number:2019, 7, 4134
• Translation or Not:No
• Date of Publication:2019-02-20