An oxycarbide-derived-carbon supported nickel ferrite/copper tungstate ternary composite for enhanced electrocatalytic activity towards the oxygen evolution reaction.

This work integrates a unique porous carbon with a binary heterostructured NiFeO/CuWO composite to enhance electrocatalytic activity towards the oxygen evolution reaction. The NiFeO/CuWO binary heterostructure was prepared through the conventional co-precipitation method. The porous carbon with turbostratic order was obtained by the selective etching of SiO nanodomains from preceramic polymer-derived SiOC.

Silver nanoparticle-decorated NiFeO/CuWO heterostructure electrocatalyst for oxygen evolution reactions.

In this work, Ag nanoparticles decorated with NiFeO/CuWO heterostructure were synthesized using the step-wise precipitation method. The influence of varying Ag loading on the NiFeO/CuWO heterostructure and its electrochemical OER performance was extensively studied in 1 M KOH electrolyte. The obtained LSV profile was analyzed to determine the overpotential, Tafel slope, and onset potential.

A preceramic polymer derived nanoporous carbon hybrid for supercapacitors.

A novel two step synthesis from commercial nanocarbon and a preceramic polymer afforded a nanoporous carbon hybrid with specific surface area of 1798 m2 g-1, and porosity in the range of 1-4 nm. Preliminary studies on the supercapacitive behaviour of the material through cyclic voltammetry resulted in an excellent specific capacitance of 333 F g-1.

Effect of the Y : B ratio on phase purity and development of thermally stable nano-sized Eu(+3)-doped YBO3 red phosphor using sodium borohydride.

This research focuses on the effect of the Y : B ratio on phase purity and the development of thermally stable 10 mol% Eu(3+)-doped YBO3 red phosphor nanomaterial using a novel sodium borohydride based solution precursor route. An equimolar concentration of Y and B leads to the development of chemically and thermally stable un-doped and Eu(3+)-doped YBO3 up to 1300 °C. An impurity phase, Y3BO6, was observed at a higher temperature of around 1400 °C.

Extreme-rate capable and highly stable SiCO-TiO2 hybrids for Li ion battery anodes.

A novel hybrid material for Li ion battery anodes, synthesized from polysiloxane-derived SiCO and nanoparticulate TiO2, exhibited specific capacity in excess of 850 mA h g(-1), fully recoverable capacity after cycling at severe current densities, as high as 20,000 mA g(-1) or 300 C rate, and exceptional stability beyond 1000 charge discharge cycles without capacity fading. Microscopy of the anodes after 3000 cycles showed no degradation or loss of materials.

Enhanced rate performance and cyclic stability of Fe3O4-graphene nanocomposites for Li ion battery anodes.

Monodispersed Fe(3)O(4) nanoparticles of size ∼10 nm were processed by a simple ultrasonic assisted co-precipitation method, mechanically mixed with graphene oxide, and thermally reduced to form a magnetite-graphene composite. Electrochemical characterization of the Fe(3)O(4)-graphene nanocomposites showed excellent capacity in excess of 1200 mA h g(-1), and exceptional stability during high current cycling for at least 1000 cycles.