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Efficient polysulfides trapping and redox enabled by Co/N-carbon implanted Li+-montmorillonite for advanced lithium-sulfur batteries by Yanfei Yang; Guilin Meng; Hongli Wang; Wankai Wang; Junping Zhang is a Engineering article available to read on EtoBox.
What is Efficient polysulfides trapping and redox enabled by Co/N-carbon implanted Li+-montmorillonite for advanced lithium-sulfur batteries about?
Li-S batteries are very promising next-generation energy storage systems due to their high theoretical capacity and energy density, but suffer from sluggish redox kinetics and serious polysulfides (PS) shuttle. Herein, Co/N-carbon implanted Li+-montmorillonite (Co/NC@Li-MMT) is designed to inhibit PS shuttle and maximize PS redox kinetics in Li-S battery. The Co/NC@Li-MMT 2D nanomaterial is fabricated by exfoliation of the Li-MMT nanosheets using melamine and Co(II)(acac)2, followed by one-step thermal reduction. The exfoliated Co/NC@Li-MMT with high Li+ and electrical conductivity can expose abundant active sites for efficient PS adsorption via Co-S and Si-S and Li bonds and for fast PS electrocatalytic conversion via Co and CoNC catalytic active sites. The Co/NC@Li-MMT modified PP (Co/NC@Li-MMT@PP) separator with a thin Co/NC@Li-MMT layer of 2.2 μm (0.3 mg cm−2 mass loading) features high Li+ conductivity, fast Li+ diffusion, superior electrolyte wettability as well as efficient PS trapping and fast PS redox kinetics as verified by various analytical techniques. Consequently, the Li-S battery with the Co/NC@Li-MMT@PP separator shows high initial capacity (1447 mAh/g), good rate p
Who reads Efficient polysulfides trapping and redox enabled by Co/N-carbon implanted Li+-montmorillonite for advanced lithium-sulfur batteries?
It is typically read by researchers, students, and practitioners in Engineering.
- Author
- Yanfei Yang; Guilin Meng; Hongli Wang; Wankai Wang; Junping Zhang
- Publisher
- Elsevier BV
- Published
- 2023
- Language
- EN
- Field
- Engineering (Physical Sciences)
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