PlumX Metrics
Embed PlumX Metrics

Suitable polysulfides adsorption and conversion on MoSe 2 @g-C 3 N 4 interlayer for advanced lithium-sulfur batteries

Applied Surface Science, ISSN: 0169-4332, Vol: 604, Page: 154556
2022
  • 12
    Citations
  • 0
    Usage
  • 4
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    12
    • Citation Indexes
      12
  • Captures
    4

Article Description

The shuttle effect of lithium polysulfides (LiPS) and sluggish redox kinetic still restrict the commercial application of lithium-sulfur batteries (LSBs). Developing the modified functional separators that block the migration of LiPS and accelerate the LiPS conversion is an effective method to solve both problems. Here we report a MoSe 2 @g-C 3 N 4 composite material with the merits of strong adsorption in g-C 3 N 4 and appropriate migration in MoSe 2 for LiPS simultaneously achieved on the surface. g-C 3 N 4 has strong adsorption for LiPS while MoSe 2 with a low migration barrier of LiPS and improves their conversion into solid-state Li 2 S. The excellent wettability of MoSe 2 @g-C 3 N 4 facilitates electrolyte migration and improves the electrochemical performance. With a MoSe 2 @g-C 3 N 4 interlayer delivered 2.2 times increase initial capacity than that with a conventional polypropylene (PP) separator at 0.5C, and a low-capacity decay per cycle of 0.09 % was achieved at 0.5C after 500 cycles. It showed the best rate capability of 564.2 mA h g −1 at 3C. Even under the high sulfur loadings of 3.2 and 4.0 mg cm −2, showing high initial capacity and decent capacity retention. This project provides a novel insight into designing the functional separators with the g-C 3 N 4 substrate composites for stable LSBs.

Bibliographic Details

Provide Feedback

Have ideas for a new metric? Would you like to see something else here?Let us know