Due to its overall performance, hard carbon (HC) is a promising anode for rechargeable lithium-, sodium-, and potassium-ion batteries (LIBs, NIBs, KIBs). The microcrystalline structure morphology of HCs facilitates the alkali metal -ion uptake fast ion intercalation deintercalation throughout pores with low-potential properties. However, large-scale industrial application still lagging because first-cycle reversible capacity, which results in low initial Coulombic efficiency (ICE) voltage...

Abstract Ternary metal sulfides (TMSs) have garnered significant attention as alternative electrode materials for rechargeable metal‐ion battery anodes and electrodes electrochemical supercapacitors (SCs). With the escalating costs of lithium, research has shifted toward sources like sodium‐ion batteries (NIBs) potassium‐ion (KIBs), offering cost‐effectiveness greater natural abundance globally. However, pursuing suitable beyond lithium‐ion (LIBs), such NIBs, KIBs, SCs with enhanced energy...

Covalent organic frameworks (COFs), featuring structural diversity, permanent porosity, and functional versatility, have emerged as promising electrode materials for rechargeable batteries. To date, amorphous polymer, COF, or their composites are mostly explored in lithium-ion batteries (LIBs), while research other alkali metal ion is still infancy. This can be due to the challenges that arise from large volume changes, slow diffusion kinetics, inefficient active site utilization by Na

Abstract Redox‐active covalent organic frameworks (COFs) with metal binding sites are increasingly recognized for developing cost‐effective, eco‐friendly electrodes in rechargeable energy storage devices. Here, we report a microwave‐assisted synthesis and characterization of triazine‐based polyimide COF that features dual redox‐active (−C=O from pyromellitic −C=N− triazine) COF@CNT nanocomposites ( COF@CNT‐X , where X=10, 30, 50 wt % NH 2 ‐MWCNT) formed through linking amino‐functionalized...

Abstract As sodium‐ion batteries compete for dominance in the energy storage market, problem arises when using traditional graphitic anodes. Graphitic anodes used Li‐ion do not work well due to limitation of Na‐ion diffusion and intercalation into graphite lattice. It is demonstrated that carbon cones disks, manufactured via scalable pyrolysis hydrocarbons, are viable anode candidates K‐ion batteries. These distinctive pure structures, without any heteroatoms present, show excellent...

The authors report a novel strategy to fabricate electrospun anatase TiO 2 –rGO composite nanofibers with 3D cubic ordered mesoporosity. Such synthesis route not only ensures molecular level formation between rGO and but also retains the content orders mesostructure after calcination of nascent fiber at an optimum condition that removes surfactant polymer. Transmission electron microscopic low angle X‐ray diffraction studies confirm presence mesoporosity within nanofibers. Raman...

Development of advanced carbon cathode support with the ability to accommodate high sulfur (S) content as well effective confinement species during charge–discharge is great importance for sustenance Li–S battery. A facile poly(vinylpyrrolidone)-assisted solvothermal method reported here prepare Mg–1,4-benzenedicarboxylate metal organic framework (MOF) from which mesoporous derived by thermal treatment, where hexagonal sheetlike morphology parent MOF retained. Existence abundant pores size 4...

Anatase TiO2 nanofibers (200–300 nm in diameter) with 3-dimensionally (3D) ordered pore structure and high surface area were synthesized by electrospinning technique. The unique combination of partially acetylacetone chelated Ti-alkoxide, viscosity-controlling cum positive charge balancing agent PVP director F127 yielded mesoporosity similar to the Pmm structure. Dynamic heating fibers temperature range 350–540 °C simultaneous XRD studies revealed that amorphous anatase transformation...

Amberlite resin formate (ARF) with a polyionic polar environment is successfully utilized as unique support for immobilization of stabilized Cu2O nanoparticles (NPs). The composite [Cu2O@ARF] characterized by FT–IR, XRD, XPS, HR–TEM, and ICP–AES analyses. HR–TEM results confirm existence fairly dispersed NPs average diameter (∼5–7 nm) onto the surface, while analyses show loading copper (10.8 mg) per gram (1.08 wt % Cu). ionic counteranions (HCOO–) could reduce precursor Cu(II) to Cu(I)...

Weak electrocatalytic activity of the La0.8Sr0.2MnO3−δ (LSM) oxygen electrode at medium and low temperatures leads to decreasing performance both in solid oxide fuel cell (SOFC) mode electrolysis (SOEC) mode. Herein, we design an Er0.4Bi1.6O3−δ (ESB) functionalized (labeled as LSM/ESB) via a one-step co-synthesis modified Pechini method. The unique LSM/ESB with polarization resistance only 0.029 Ω·cm2 750 °C enables highly enhanced rate reduction evolution reaction. single achieves maximum...

A Ni-based ternary nanocomposite, Ni–rGO–zeolite, has been developed as an efficient and recyclable heterogeneous catalyst for on-water regioselective azide alkyne cycloaddition.

Porous spherical carbon nanostructures derived from biomass waste showed promising energy storage potential.

We designed an electrospinning synthesis protocol to obtain in situ, the mesoporous TiO2 nanofibers, which are surface-decorated with plasmonic AuAg nanoparticles (AuAg-mTNF-H). Such alloy found be partially exposed on surface of nanofibers. Characterization by HRTEM and EDS confirmed formation 1:1 nanofibers heterojunction at interfaces. On basis electron microscopic characterization, we proposed that, during incorporated metal ions capping negative charges migrated toward outer nascent...

The influence of adding nanoparticles on the ascast morphology spin coated immiscible polystyrene/poly(methyl methacrylate) (PS/PMMA) thin films different thickness (hE) and composition (RB, volume ratio PS to PMMA) has been explored in this article. To understand precise effect nanoparticle addition, PS/PMMA blend cast from toluene a native oxide covered silicon wafer substrate was first investigated. It is seen that particle free films, generic remains nearly unaltered with increase hE,...

Ti_1−xZr_xO_2−y single crystals with exposed high energy facets and defects show co-catalyst free solar water splitting conversion in DSSCs.

Crystalline cubic zirconia nanocoating on cpTi with enhanced surface hardness, durability and biocompatibility, useful as an advanced oral implant was fabricated by applying layer-by-layer dip-coating at low annealing temperature.

Ternary metal sulfides are projected as advanced lithium-ion battery (LIB) anodes due to their superior electronic conductivity and specific capacity compared respective oxide counterparts. Herein, a porous composite of cuboidal FeNi2S4 (FNS) with 2D reduced graphene (rGO) 1D multi-walled carbon nanotubes (MWCNTs) (composite name: FNS@GC) synthesised by an in-situ single-step hydrothermal process. The 1D/2D combined thin coatings on the prevent aggregation during performance increasing...

Abstract Exsolution of nanoparticles followed by chemical treatment (“chemistry at a point”) is very exciting approach to the smart design functional materials such as visible light active photocatalysts. Unfortunately, usually utilized thermal reduction not feasible for low melting point metals and compounds Cd CdO. Here hydrothermal prepare exsolved CdS nanodots on cotton ball‐like perovskite supports described. The titanate‐based photocatalyst synthesized using process room‐temperature...

Hierarchical TiO₂hollow spheres with a coating of functionalized C dots show very fast and selective dye adsorption, the obtained after calcination adsorbed C^F@THS can be useful as an efficient photoanode photocatalyst.

A unique, extremely fast alloy–dealloy phenomenon of Au–Ag nanoparticles inside transparent SiO₂ film associated with large plasmonic modifications is observed.

A series of Pd/Fe2O3 nanohybrids with low metal content supported Amberlite resin formate (Pd/Fe2O3@ARF) was prepared and characterized by FTIR, XRD, XPS, EELS, SEM–EDAX, HRTEM. The coexistence mainly crystalline Pd Fe2O3 nanoparticles (NPs) average size ∼4–5 nm in the matrix confirmed. These were used for hydrodehalogenation polyhaloaromatics using NaBH4 as a reducing agent water. Notably, composite Pd/Fe2O3@ARF-110 exhibits excellent catalytic performance different haloaromatics. High TOF...