Room-temperature chemical synthesis of 3-D dandelion-type nickel chloride (NiCl@NiF) supercapattery nanostructured materials.

A simple, room-temperature operable, glycerol-supported single beaker-inspired, and binder-free soft-chemical protocol has been developed to synthesize 3-D dandelion flower-type nickel chloride (NiCl) supercapattery (supercapacitor + battery) nanostructured electrode material from solid 3-D nickel-foam (NiF). The dandelion flower-type NiCl@NiF labeled as B electrode, demonstrates a battery-type electrochemical performance as obtained 1551 F·g specific capacitance (SC) and 95% cyclability over 50,000 cycles is higher than that of a setaria viridis-type NiCl@NiF electrode, prepared without glycerol labeled as A electrode. As a commercial market product, assembled NiCl@NiF@ (cathode)// BiMoO (anode) pouch-type asymmetric supercapacitor energy storage device demonstrates moderate energy density and power density (28 Wh·kg and 845 W·kg).

NiF Nanorod Arrays for Supercapattery Applications.

A electrode for energy storage cells is possible directly on Ni foam, using a simple reduction process to form NiF nanorod arrays (NA). We demonstrate NiF@Ni NA for a symmetric electrochemical supercapattery electrode. With an areal specific capacitance of 51 F cm at 0.

Room-temperature synthesis and CO-gas sensitivity of bismuth oxide nanosensors.

Room-temperature (27 °C) synthesis and carbon dioxide (CO)-gas-sensor applications of bismuth oxide (BiO) nanosensors obtained a direct and superfast chemical-bath-deposition method (CBD) with different surface areas and structures, , crystallinities and morphologies including a woollen globe, nanosheet, rose-type, and spongy square plate on a glass substrate, are reported. Moprhologies of the BiO nanosensors are tuned through polyethylene glycol, ethylene glycol, and ammonium fluoride surfactants. The crystal structure, type of crystallinity, and surface appearance are determined from the X-ray diffraction patterns, X-ray photoelectron spectroscopy spectra, and high-resolution transmission electron microscopy images.

Chemically grown bismuth-oxy-iodide (BiOI/BiI) nanostructure for high performance battery-type supercapacitor electrodes.

A dual phase bismuth oxyiodide (BiOI/Bi9I2) nanostructure battery type supercapacitor electrode is synthesized using chemical bath deposition (CBD) and the capacitance and energy/power density (ED/PD) reported. The supercapacitor electrode BiOI/Bi9I2 exhibited a specific capacitance of 515.5 F g-1 (capacity value 143 mA h g-1) at a current density of 2 A g-1, with 80% of the original capacitance retained, even at a high current density of 4 A g-1 over 5000 cycles.

Facile Chemical Synthesis and Potential Supercapattery Energy Storage Application of Hydrangea-type BiMoO.

Soft chemical synthesis is used to obtain a hydrangea-type bismuth molybdate (BiMoO) supercapattery electrode that demonstrates considerable energy/power density and cycling life. Structure and morphology studies, initially, reveal a phase-pure polycrystalline and hydrangea-type surface appearance for BiMoO, which upon testing in an electrochemical energy storage system displays supercapattery behavior, a combination of a supercapacitor and a battery. From the power law, an applied-potential-dependent charge storage mechanism is established for the BiMoO electrode material.

Electrocatalytic Water Splitting through the Ni S Self-Grown Superstructures Obtained via a Wet Chemical Sulfurization Process.

We report water-splitting application of chemically stable self-grown nickel sulfide (Ni S ) electrocatalysts of different nanostructures including rods, flakes, buds, petals, etc., synthesized by a hydrothermal method on a three-dimensional Ni foam (NiF) in the presence of different sulfur-ion precursors, e.g.

Author Correction: Low-Temperature Ionic Layer Adsorption and Reaction Grown Anatase TiO Nanocrystalline Films for Efficient Perovskite Solar Cell and Gas Sensor Applications.

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Sulphur Source-Inspired Self-Grown 3D Ni S Nanostructures and Their Electrochemical Supercapacitors.

Sulphur source-inspired self-grown polycrystalline and mesoporous nickel sulfide (Ni S ) superstructures with vertically aligned nanomorphologies viz. rods, flakes, buds, and petals, synthesized at elevated temperatures and moderate pressures by a facile one-pot hydrothermal method on a three-dimensional Ni foam demonstrate remarkable areal specific capacitances of 7152, 4835, and 2160 F cm at current densities of 1, 2, and 5 mA cm, respectively, with a cycling stability of 94% for a battery-type electrochemical supercapacitor when used as an electrode material in a supercapacitor. The Ni S //BiO asymmetric supercapacitor assembly exhibits an energy density of 41 W h·kg at a power density of 1399 W kg for 1 A g and was used in a three-cell series combination to operate a "GFHIM" display panel (our research institute name, Global Frontier R & D Center for Hybrid Interface Materials) composed of nearly 50 differently colored light-emitting diodes with high intensity in 1 M KOH water-alkali electrolyte.

Hybrid composite polyaniline-nickel hydroxide electrode materials for supercapacitor applications.

Pristine and nanocomposite (NC) hybrid electrodes of polyaniline (PANI)-nickel hydroxide [Ni(OH)] have been prepared by single and two-step electrodeposition processes, respectively, onto stainless-steel (SS) substrates. Enhanced reversibility and stability of amorphous PANI- Ni(OH) NC electrodes compared to single electrode materials have been explored. PANI has a nanofibrous morphology, Ni(OH) has nanoplatelet-type morphology, and the NC electrodes retain an overall nanofibrous morphology.

Low-Temperature Ionic Layer Adsorption and Reaction Grown Anatase TiO Nanocrystalline Films for Efficient Perovskite Solar Cell and Gas Sensor Applications.

A low-temperature (90 °C) and directly grown anatase titanium dioxide (TiO) nanocrystalline film using successive ionic layer adsorption and reaction (SILAR) for perovskite solar cell and gas sensor applications. TiO nanocrystalline electron transfer layer (ETL) improves the power conversion efficiency (PCE) of perovskite solar cells due to faster charge transport kinetics as well as slower charge recombination process. The optimized TiO nanocrystalline ETL (15 L) demonstrates as high as ~10% PCE with a short circuit current density of 18.

Metal-free heterogeneous and mesoporous biogenic graphene-oxide nanoparticle-catalyzed synthesis of bioactive benzylpyrazolyl coumarin derivatives.

We report the preparation of graphene oxide nanoparticles (GONPs), a metal-free, heterogeneous, non-toxic, reusable and mesoporous green-(acid)-catalyst obtained by sugar carbonization through a micro-wave chemical synthesis method for the synthesis of bio-active benzylpyrazolyl coumarin derivatives (BCDs) under thermal conditions (50 °C) in ethanol solvent. The obtained products were purified by re-crystallization from ethanol, assuring usability of GONPs in multicomponent reactions (MCRs) that could find wide application in the synthesis of a variety of biologically potent molecules of therapeutic significance.