The solution used in a vanadium flow battery is vanadium oxide, V2O5, dissolved in sulfuric acid and water. All conventional batteries must contain two unique solutions. Production of the solution is more space and time efficient, and it is impossible to contaminate the battery within itself. Another advantage is that the reaction is in aqueous solution and requires no phase changes. We are cur...

Two new vanadium oxide compounds, which contain interlamellar transition metal complexes bound to vanadium oxide sheets, were synthesized hydrothermally. The crystal structure of each reveals unusual coordination geometries and interlayer bonding. [Ni(2,29-bipyridine)]2[V12O32] (1) was prepared from the reaction of V2O5, NiO, H2O and 2,29-bipyridyl in the molar ratio 4:8:3312:0.5. The isomorpho...

A series of V205/TiO 2/SiO 2 catalysts were structurally investigated by in situ Raman spectroscopy and chemically probed by methanol oxidation in order to determine the molecular structure-reactivity relationships of the V205/TiO 2/SiO 2 catalysts. Only surface TiO,. species are present on the 3% TiO 2 /S iO 2 catalysts, and the surface TiO x species as well as bulk TiO 2 (anatase) particles c...

Superlattices have attracted great interest because of their tailorable electronic properties at the interface. However, the lack of an efficient and low-cost synthetic method represents a huge challenge to implement superlattices into practical applications. Herein, we report a space-confined nanoreactor strategy to synthesize flexible freestanding graphene-based superlattice nanosheets, which...

We investigated the feasibility of hydrogen storage with electrochemically formed VO2 nanotubes. The nanotubes were fabricated through anodization vanadium metal in fluoride ion-containing organic electrolyte followed by an annealing process Ar-saturated atmosphere at 673 K for 3 h a heating rate /min. During anodization, current density significantly increased up to 7.93 mA/cm2 approximately 5...

The performance of synergetic hybrid aerogel materials of vanadia and graphene as electrode materials in supercapacitors was evaluated. The hybrid materials were synthesized by two methods. In Method I, premade graphene oxide (GO) hydrogel was first chemically reduced by L-ascorbic acid and then soaked in vanadium triisopropoxide solution to obtain V2O5 gel in the pores of the reduced graphene ...

Magnéli-type vanadium oxides form the homologous series V(n)O(2) (n) (-1) and exhibit a temperature-induced, reversible metal-insulator first order phase transition (MIT). We studied the change of the adhesion force across the transition temperature between the cleavage planes of various vanadium oxide Magnéli phases (n = 3 … 7) and spherical titanium atomic force microscope (AFM) tips by syste...

The self-assembly of molecules or small clusters, that is, the spontaneous association of atomic or molecular building blocks under equilibrium conditions, is emerging as a successful chemical strategy to fabricate well-defined structures of nanometer dimensions, with potential applications in many areas of nanotechnology. This bottom-up approach of synthesis is a promising way to design novel ...