A highly ordered mesoporous sulfurized polyacrylonitrile (MSPAN) composite has been synthesized via in situ polymerization of (PAN) an SBA-15 template followed by sulfurization. The possessed high sulfur utilization, Coulombic efficiency, and excellent cycling stability as a cathode active material for high-rate lithium (Li–S) batteries. structure was observed the MSPAN from transmission electron microscopy. Excellent electrochemical stable performances were obtained, especially at C rates....

In order to satisfy the escalating energy demands, it is inevitable improve density of current Li-ion batteries. As development high-capacity cathode materials paramount significance compared anode materials, here we have designed for first time a unique synergistic hybrid material with enhanced specific capacity, incorporating cost-effective iron sulfide (FeS) nanoparticles in sulfurized polyacrylonitrile (SPAN) nanofiber matrix through rational situ synthesis strategy. Previous reports on...

Lithium ion (Li-ion) batteries have been widely applied to portable electronic devices and hybrid vehicles. In order further enhance performance, the search for advanced anode materials meet growing demand high-performance Li-ion is significant. Fe3C as an material can contribute more capacity than its theoretical one due pseudocapacity on interface. However, traditional synthetic methods need harsh conditions, such high temperature hazardous expensive chemical precursors. this study, a...

Room-temperature sodium-sulfur batteries (RT-NaSBs) with high theoretical energy density and low cost are ideal candidates for next-generation stationary large-scale storage. However, the dissolution of sodium polysulfide (NaPS) intermediates their migration to anode side give rise shuttle phenomenon that impedes reaction kinetics leading rapid capacity decay, poor coulombic efficiency, severe loss active material. Inhibiting generation long-chain NaPS or facilitating adsorption via physical...

The copper current collector induces side reaction with metal sulphide due to formation while cycling. carbon-coated aluminium foil was an ideal in terms of inertness anodes and low resistivity.

Sodium-ion batteries (SIBs) are a viable substitute for lithium-ion due to the low cost and wide availability of sodium. However, practical applications require development fast charging sodium-ion-based full-cells with high power densities. Na3V2(PO4)3 (NVP) is bipolar material excellent characteristics as both cathode an anode in SIBs. Designing symmetric cells NVP results single voltage plateau significant specific capacity which ideal full cell. Here we demonstrate first time tremendous...

Iron sulfide (FeS) has gained reasonable attention as a potential electrode material for lithium-ion batteries owing to its high specific capacity. However, along with the intrinsically low conductivity of FeS, generation polysulfide intermediates and volume expansion encountered during cycling process deteriorates electrochemical performance. A viable solution would be design conductive carbon nanoarchitectures capable effectively accommodating electrochemically active FeS provide an...

Abstract Iron sulfide (FeS) anodes are plagued by severe irreversibility and volume changes that limit cycle performances. Here, a synergistically coupled hybrid composite, nanoengineered iron sulfide/S‐doped graphene aerogel, was developed as high‐capacity anode material for Li/Na‐ion half/full batteries. The rational coupling of in situ generated FeS nanocrystals the S‐doped rGO aerogel matrix boosted electronic conductivity, Li + /Na diffusion kinetics, accommodated FeS. This system...

Abstract FeS 2 /C core–shell nanofiber webs were synthesized for the first time by a unique synthesis strategy that couples electrospinning and carbon coating of nanofibers with sucrose. The design one‐dimensional morphology was found to be greatly beneficial accommodating volume changes encountered during cycling, induce shorter lithium ion diffusion pathways in electrode, prevent sulfur dissolution cycling. A high discharge capacity 545 mAh g −1 retained after 500 cycles at 1 C, exhibiting...

A novel tailor-made multilayer composite polymer electrolyte, consisting of two outer layers electrospun polyacrylonitrile (PAN) and one inner layer poly(vinyl acetate) (PVAc)/poly(methyl methacrylate) (PMMA)/poly(ethylene oxide) (PEO) fibrous membrane, was prepared using continuous electrospinning. These membranes, which are made up fibers with diameters in the nanometer range, were stacked to produce interconnected pores that result a high porosity. Gel electrolytes (GPEs) by entrapping...

The high theoretical energy density of room temperature sodium-sulfur and potassium-sulfur batteries (Na–S; 1274 Wh/kg, K–S; 914 Wh/kg; based on the mass sulfur) due to multi-electron transfer associated with unique conversion chemistry S natural abundance Na, K, raw materials make them ideal candidates for large-scale storage applications beyond Li batteries. However, achieving good reversibility, cyclability, active material utilization in Na–S K–S demands alleviation complex polysulfide...

In this work, electrospun PBI separators with a highly porous structure and nanofiber diameter of about 90-150 nm are prepared using multi-nozzle under controlled conditions for lithium metal batteries. Cross-linking α, α-dibromo-p-xylene surface treatment 4-(chloromethyl) benzoic acid successfully improve the electrochemical as well mechanical properties separators. The resulting separator is endowed high thermal stability excellent wettability (1080 to 1150%) commercial liquid electrolyte...

Sodium-ion batteries (SIBs) are promising alternatives to lithium-based energy storage devices for large-scale applications, but conventional lithium-ion battery anode materials do not provide adequate reversible Na-ion storage. In contrast, conversion-based transition metal sulfides have high theoretical capacities and suitable SIBs. Iron sulfide (FeS) is environmentally benign inexpensive suffers from low conductivity sluggish diffusion kinetics. addition, significant volume changes during...

Recently, tin oxide (SnO2) has received significant attention for use as an anode material next generation lithium-ion batteries (LIBs) owing to its high theoretical capacity (782 mAh g-1), which is more than twice of that the commercialized graphite (372 g-1). Several additional advantages, such low cost, environmental friendliness, easy fabrication and natural abundance improve promise. Although SnO2 high, volume expansion during cycling causes issue with stability. In this study, ordered...

The development of high-rate and long-cycle-life Na-based cathode materials, on par with the performance commercialized lithium-based cathodes, is crucial to satisfy recurring surge in energy demand. Here, we report an interconnected bead-like P2-type manganese-based oxide NaxCoyMn1−yO2 (x = 0.66, y 0.1) synthesized by electrospinning subsequent heat treatment as a material for sodium-ion batteries (SIBs). employed strategy one-dimensional morphological design particles profusely enhances...

Olivine LiMnxFe1−xPO4 (LMFP) cathodes are gaining attention as a promising alternative to LiFePO4 (LFP) for lithium‐ion batteries (LIBs), offering higher energy density while maintaining lower costs and improved safety compared traditional layered oxide cathodes. However, their low electronic conductivity remains challenge. One effective strategy enhance electrode kinetics is incorporating carbon additives during fabrication. This study examines the role of conductive optimization in...