A dual-functional interlayer for Li–S batteries using carbon fiber film cladded electron-deficient Li₂B₄O₇

Abstract

Electron-deficient property of the atoms in functional materials endow them with tuneable adsorption and catalysis effect on the polysulfides thus improving the performance of lithium-sulfur batteries. In this work, the...

Advanced engineering strategies for Li2S cathodes in lithium–sulfur batteries

“…Carbon matrix with high ionic and electronic conductivity is recognized as a promising host material for Li 2 S cathodes. [107][108][109] The essential characteristics of carbon materials that make them suitable for this purpose include the follows. (1) Large surface area: this feature allows abundant space for uniformly dispersing Li 2 S nanoparticles with controlled size and ensures their close contact with the substrate.…”

Nano-sulfur confined in a 3D carbon nanotube/graphene network as a free-standing cathode for high-performance Li–S batteries

“…11,12 The reasonable design and construction carbon material with sulfur is an effective measure to solve the problems of lithium-sulfur batteries. Various sulfur/carbon composites, such as sulfur/graphene (S/G), 13,14 sulfur/carbon nanotubes (S/CNTs), 15,16 sulfur/microporous carbon, 17,18 sulfur/ mesoporous carbon, 19,20 and sulfur/carbon bers, 21,22 have been prepared, which exhibit a satisfactory effect on the improvement of the conductivity of sulfur and inhibit the "shuttle effect". Carbon materials with excellent electrical conductivity, a high specic area, and strong adsorption capability can offer a conductive framework that not only enhances the electric contact of sulfur but also effectively retards the dissolving of polysuldes in the electrolyte.…”

Defect‐engineered Sulfur Vacancy Modified NiCo2S4‐x Nanosheet Anchoring Polysulfide for Improved Lithium Sulfur Batteries

“…It is figured out that good conductivity and inhibition of the shuttle are two significant factors for material design in Li-S batteries. Various strategies for combining carbon and functional nanomaterials, including confinement design, [21][22][23] separator modification, [24,25] interlayer insertion, [26,27] etc., have been proposed to solve the aforementioned issues and have made great progress.Self-supporting interlayers are attracting widespread attention for their good stability and fabrication property. Electrospinning is a feasible approach to fabricating conductive CNF membranes with controllable and adjustable fiber diameter, membrane thickness, and size, making it ideal for producing binder-free interlayers for Li-S batteries.…”

“…It is figured out that good conductivity and inhibition of the shuttle are two significant factors for material design in Li-S batteries. Various strategies for combining carbon and functional nanomaterials, including confinement design, [21][22][23] separator modification, [24,25] interlayer insertion, [26,27] etc., have been proposed to solve the aforementioned issues and have made great progress.…”