Novel sulfur/polythiophene composites with core/shell structure were synthesized via an in situ chemical oxidative polymerization method chloroform as a solvent, thiophene reagent, and iron chloride oxidant at 0 °C. Different ratios of the characterized by elemental analysis, FTIR, XRD, SEM, TEM, electrochemical methods. A suitable ratio for was found to be 71.9% sulfur 18.1% polythiophene determined CV EIS results. Conductive acts conducting additive porous adsorbing agent. It uniformly...

A multiwalled carbon nanotube/sulfur (MWCNT@S) composite with core-shell structure was successfully embedded into the interlay galleries of graphene sheets (GS) through a facile two-step assembly process. Scanning and transmission electron microscopy images reveal 3D hierarchical sandwich-type architecture GS-MWCNT@S. The thickness S layer on MWCNTs is ~20 nm. Raman spectroscopy, X-ray diffraction, thermogravimetric analysis, energy-dispersive analysis confirm that sulfur in highly...

Transition metal dichalcogenides (TMD), analogue of graphene, could form various dimensionalities. Similar to carbon, one-dimensional (1D) nanotube TMD materials has wide application in hydrogen storage, Li-ion batteries, and supercapacitors due their unique structure properties. Here we demonstrate the feasibility tungsten disulfide nanotubes (WS2-NTs)/graphene (GS) sandwich-type architecture as anode for lithium-ion batteries first time. The graphene-based hierarchical plays vital roles...

Abstract Lithium–sulfur (Li–S) batteries are promising energy‐storage devices because of their high theoretical energy densities. However, the practical application Li–S is still impeded by poor cycling performance and rate capability at conditions. In order to improve batteries, a hierarchical Mo 2 C nanocluster/carbon nanosheets hybrid based hollow spherical material (Mo C/CHS) designed prepared. The spheres composed stacked carbon can facilitate infiltration electrolyte. ultrasmall highly...

Abstract The amorphous metal boride materials are attractive catalyst for advanced lithium sulfur batteries, but their catalytic mechanism remains unclear. Herein, 2D Mo‐doped cobalt (Co 7 Mo 3 B) is designed the first time as bidirectional catalysis by rapid chemical reduction. atom cluster structure of Co B revealed theoretical calculation. Electron paramagnetic resonance test further confirms that has interstitial compound characteristics. Experimental results show porous nanosheets and...

Abstract Issues with lithium dendrite growth and dead formation limit the practical application of metal batteries, especially under high current conditions where uneven temperature distribution leads to serious safety concerns. Herein, In situ assembly polydopamine (PDA) aluminum nitride (AlN) coatings on polypropylene (PP) separator is introduced address these challenges. The AlN particles are encapsulated by PDA, functional groups in PDA form Al‐O coordination bonds Al 3+ , which promote...

Rapid in situ chemical oxidation polymerization of polyaniline was carried out to coat MWCNT-core/sulfur-shell structures. The S-coated-MWCNTs were obtained by ball-milling and thermal treatment. adding 2.6 g dispersed S/MWCNT 0.65 aniline hydrochloride ethanol, then mixing a certain amount ammonium peroxydisulfate dissolved 0.2 M HCl. addition reduced the time from 60 21 min. composites characterized elemental analysis, FTIR, XRD, SEM, TEM, electrochemical methods. A 70.0% sulfur, 20.2%...

Lithium oxalyldifluoroborate (LiODFB) has been investigated as an organic electrolyte additive to improve the cycling performance of Li–S batteries. Cell test results demonstrate that appropriate amount LiODFB added into leads a high Coulombic efficiency. Analyses by energy dispersive X-ray spectroscopy, photoelectron and density functional theory showed promotes formation LiF-rich passivation layer on lithium metal surface, which not only blocks polysulfide shuttle, but also stabilizes surface.

Abstract Structural degradation and low conductivity of transition-metal oxides lead to severe capacity fading in lithium-ion batteries. Recent efforts solve this issue have mainly focused on using nanocomposites or hybrids by integrating nanosized metal with conducting additives. Here we design specific hierarchical structures demonstrate their use flexible, large-area anode assemblies. Fabrication these anodes is achieved via oxidative growth copper oxide nanowires onto substrates followed...

Issues with the dissolution and diffusion of polysulfides in liquid organic electrolytes hinder advance lithium–sulfur batteries for next‐generation energy storage. To trap re‐utilize without hampering lithium ion conductivity, a bio‐inspired, brush‐like interlayer consisting zinc oxide (ZnO) nanowires interconnected conductive frameworks is proposed. The chemical effect ZnO on capturing has been conceptually confirmed, initially by using commercially available macroporous nickel foam as...

Abstract Rechargeable high‐energy lithium–sulfur batteries suffer from rapid capacity decay and poor rate capability due to intrinsically intermediate polysulfides' shuttle effect sluggish redox kinetics. To tackle these problems simultaneously, a layer‐by‐layer electrode structure is designed, each layer of which consists ultrafine CoS 2 ‐nanoparticle‐embedded porous carbon evenly grown on both sides reduced graphene oxide (rGO). The nanoparticles derived metal–organic frameworks (MOFs)...

Abstract The modular assembly of microstructures from simple nanoparticles offers a powerful strategy for creating materials with new functionalities. Such have unique physicochemical properties originating confinement effects. Here, the scattered ketjen black into an oval‐like microstructure via double “Fischer esterification,” which is form surface engineering used to fine‐tune characteristics, presented. After carbonization, carbon shows promise as candidate sulfur host fabrication thick...

Rechargeable lithium-sulfur (Li-S) batteries are attractive candidates for energy storage devices because they have five times the theoretical of state-of-the-art Li-ion batteries. The main problems plaguing Li-S poor cycle life and limited rate capability, caused by insulating nature S shuttle effect associated with dissolution intermediate lithium polysulfides. Here, we report use biocell-inspired polydopamine (PD) as a coating agent on both cathode separator to address these (the...

The behavior of two-dimensional (2D) materials for energy storage systems relates to their morphology and physicochemical properties. Although various 2D can be found in different fields, the open access these has greatly hampered practical applications, such as lithium–sulfur (Li–S) batteries, where soluble intermediates should controlled. Here, we have developed a facile approach prepare ultrathin interconnected carbon fabrics (ICFs) with "bubble-like" abundant mesopores using "blowing...

Development of next-generation high-energy lithium (Li) metal batteries is hindered by uncontrollable growth Li dendrites and the unstable Li/electrolyte interface during repeated plating/stripping.

The uncontrollable growth of lithium (Li) dendrites and the instability Li/electrolyte interface hinder development next-generation rechargeable metal batteries. combination inorganic nanoparticles polymers as artificial SEI layer shows great potential in regulating lithium-ion flux. Here, we design spatially confined LiF an aligned polymer matrix layer. A high dielectric homogenizes electric field near surface metal. Aligned pores with promote transport across synergistic effect highly...

Abstract Tacking issues of uncontrolled lithium dendrites formation with polymer‐based separator has a significant impact on the applications lithium‐metal batteries. Here, porous poly(acrylonitrile) nanosheets (PPNS) enriched conjugated C═C/C═N groups is designed PP by spray‐coating. The molecular structure PPNS affords high mechanical strength and thermal conductivity. Density functional theory (DFT) calculations confirm that polar N‐containing in derived from cyclization C≡N exhibit...

A three-dimensional hierarchical sandwich-type graphene sheet-sulfur/carbon (GS-S/CZIF8-D) composite for use in a cathode lithium sulfur (Li-S) battery has been prepared by an ultrasonic method. The microporous carbon host was one-step pyrolysis of Zeolitic Imidazolate Framework-8 (ZIF-8), typical zinc-containing metal organic framework (MOF), which offers tunable porous structure into electro-active can be diffused. thin sheet, wrapped around the sulfur/zeolitic imidazolate framework-8...

A Polydopamine-based "nano-binder", which can glue carbon and sulfur at nanoscale, is used to construct stable double-shelled cathodes. This unique hierarchical design for S cathode not only offer a physical barrier trapping polysulfides, but also prevent conducting black from detaching surface. Polydopamine with high elasticity excellent isotropy the deformation. As service our authors readers, this journal provides supporting information supplied by authors. Such materials are peer...

Abstract Lithium metal is one of the most promising anode candidates for next‐generation high‐energy batteries. Nevertheless, lithium pulverization and associated loss electrical contact remain significant challenges. Here, an antipulverization high‐continuity comprising a small number solid‐state electrolyte (SSE) nanoparticles as conformal/sacrificial fillers copper (Cu) foil supporting current collector reported. Guiding by SSE, this new facilitates nucleation, contributing to form...

The doped N species and embedded Co nanoparticles of Co-NCNTs have a synergistic effect on lithium polysulfide capture conversion, leading to enhanced redox reaction kinetics.