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  • The vanadium hydride materials V(IV)-100 and V(IV)-25C-H2 were tested for room temperature hydrogen storage to compare their activity to V(III) alkyl hydride gels previously synthesized by our group. 9c Hydrogen PCT adsorption-desorption isotherms were thus recorded at 298 K and compared to standard isotherm of AX-21 recorded under the same conditions at 2-3 mmol total adsorption of H2 for accuracy. The initial material V(IV)-100 reached a maximum of 2.1 wt % at 130 bar and 25 °C without saturat Vanadium, V–5Cr, and V–5Ti alloys were prepared from 99.9% pure vanadium by arc melting in an argon atmosphere. The nuggets were cold-rolled and punched into tensile specimens for in situ straining experiment with a gauge size of 2×7 mm2 and 0.1 mm in thickness. The samples were evacuated in a quartz tube and annealed in a vacuum at 1000 °C for one h. Hydrogen was doped into the samples in a high-pressure oven at 450 °C with 0.5 and 0.8 MPa hydrogen pressures. The first visible evidence of the e A vanadium aryl hydride gel was prepared by thermal decomposition and subsequent hydrogenation of tetraphenyl vanadium and evaluated for electrochemical and hydrogen storage performance. Characterization by IR, XRD, XPS, nitrogen adsorption, and TGA suggests that the material consists predominantly of a mixture of vanadium centers in oxidation states of IV bound together by bridging hydride and phenyl groups. Electrochemical properties were explored to probe the reversible oxidation state behavi What is vanadium hydride?The vanadium hydride materials V(IV)-100 and V(IV)-25C-H2 were tested for room temperature hydrogen storage to compare their activity to V(III) alkyl hydride gels previously synthesized by our group. 9c Hydrogen PCT adsorption-desorption isotherms were thus recorded at 298 K and compared to standard isotherm of AX-21 recorded under the same conditions at 2-3 mmol total adsorption of H2 for accuracy. The initial material V(IV)-100 reached a maximum of 2.1 wt % at 130 bar What is vanadium hydride?A vanadium aryl hydride gel was prepared by thermal decomposition and subsequent hydrogenation of tetraphenyl vanadium and evaluated for electrochemical and hydrogen storage performance. Characterization by IR, XRD, XPS, nitrogen adsorption, and TGA suggests that the material consists predominantly of a mixture of vanadium centers in oxidation states of IV bound together by bridging hydride and phenyl groups. Electrochemical properties were explored to probe the reversib Vanadium hydroide, ultrafine, micron, gray-black powder, chemical formula VH2, Purity: 99%Particle Size 325 Mesh About vanadium hydride VH2 powder: The vanadium hydride is a unique hydrogen-absorbing/desorbing pressure that approaches a binary hydride of ambient temperature. Vanadium was not able to form a vanadium-hydrocarbon complex, compared with the later transition metal. Vanadium hydride (VH2) is a compressor that's a good fit. Vanadium hydride (VH2) is a group of transition metal

The vanadium hydride materials

The vanadium hydride materials V(IV)-100 and V(IV)-25C-H2 were tested for room temperature hydrogen storage to compare their activity to V(III) alkyl hydride gels previously synthesized by our group. 9c Hydrogen PCT adsorption-desorption isotherms were thus recorded at 298 K and compared to standard isotherm of AX-21 recorded under the same conditions at 2-3 mmol total adsorption of H2 for accuracy. The initial material V(IV)-100 reached a maximum of 2.1 wt % at 130 bar and 25 °C without saturat

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Experimental procedure of vanadium hydride

Vanadium, V–5Cr, and V–5Ti alloys were prepared from 99.9% pure vanadium by arc melting in an argon atmosphere. The nuggets were cold-rolled and punched into tensile specimens for in situ straining experiment with a gauge size of 2×7 mm2 and 0.1 mm in thickness. The samples were evacuated in a quartz tube and annealed in a vacuum at 1000 °C for one h. Hydrogen was doped into the samples in a high-pressure oven at 450 °C with 0.5 and 0.8 MPa hydrogen pressures. The first visible evidence of the e

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What is vanadium hydride

A vanadium aryl hydride gel was prepared by thermal decomposition and subsequent hydrogenation of tetraphenyl vanadium and evaluated for electrochemical and hydrogen storage performance. Characterization by IR, XRD, XPS, nitrogen adsorption, and TGA suggests that the material consists predominantly of a mixture of vanadium centers in oxidation states of IV bound together by bridging hydride and phenyl groups. Electrochemical properties were explored to probe the reversible oxidation state behavi

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Electrochemical assessment of vanadium hydride

What is vanadium hydride?The vanadium hydride materials V(IV)-100 and V(IV)-25C-H2 were tested for room temperature hydrogen storage to compare their activity to V(III) alkyl hydride gels previously synthesized by our group. 9c Hydrogen PCT adsorption-desorption isotherms were thus recorded at 298 K and compared to standard isotherm of AX-21 recorded under the same conditions at 2-3 mmol total adsorption of H2 for accuracy. The initial material V(IV)-100 reached a maximum of 2.1 wt % at 130 bar

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Hydride formation and fracture of vanadium alloys

What is vanadium hydride?A vanadium aryl hydride gel was prepared by thermal decomposition and subsequent hydrogenation of tetraphenyl vanadium and evaluated for electrochemical and hydrogen storage performance. Characterization by IR, XRD, XPS, nitrogen adsorption, and TGA suggests that the material consists predominantly of a mixture of vanadium centers in oxidation states of IV bound together by bridging hydride and phenyl groups. Electrochemical properties were explored to probe the reversib

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High Purity Vanadium Hydride VH2 Powder, 99%

Vanadium hydroide, ultrafine, micron, gray-black powder, chemical formula VH2, Purity: 99%Particle Size 325 Mesh About vanadium hydride VH2 powder: The vanadium hydride is a unique hydrogen-absorbing/desorbing pressure that approaches a binary hydride of ambient temperature. Vanadium was not able to form a vanadium-hydrocarbon complex, compared with the later transition metal. Vanadium hydride (VH2) is a compressor that's a good fit. Vanadium hydride (VH2) is a group of transition metal

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