Topic
Vanadium
About: Vanadium is a research topic. Over the lifetime, 35139 publications have been published within this topic receiving 516755 citations. The topic is also known as: V & element 23.
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01 Jan 1980
TL;DR: In this paper, the essential roles of arsenic, fluorine, nickel, silicon, tin and vanadium have in recent years been established in animal nutrition, and they are known as trace elements, minor elements or micro-nutrients.
Abstract: Fifteen or more elements present in rocks and soils normally in very small amounts are essential for plant and/or animal nutrition. By the nature of their low abundance in natural uncontaminated earth materials or plants, they are known as trace elements, minor elements or micro-nutrients. Boron, copper, iron, manganese, molybdenum, silicon, vanadium and zinc are required by plants; copper, cobalt, iodine, iron, manganese, molybdenum, selenium and zinc by animals. In addition essential roles of arsenic, fluorine, nickel, silicon, tin and vanadium have in recent years been established in animal nutrition.
3,339 citations
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01 Jan 1973
TL;DR: In this article, the transition elements involving metal-metal bonds are defined and an introductory essay is given, along with a discussion of homogeneous catalysis and transition metal chemistry, B L Shaw & N I Tucker.
Abstract: (partial) The lanthanides, T Moeller. Carbonyls, cyanides, isocyanides and nitrosyls, W P Griffith. Compounds of the transitional elements involving metal-metal bonds, D L Kepert. Transition metal, J C Green & M V H Green. Nonstoichiometric compounds. An introductory essay, D J M Bevan. Tungsten bronzes, vanadium bronzes and related compounds, P Hagenmuller. Isopolyanions and Heteropolyanions, D L Kepert. Ionic compounds, G C Allen. Transition metal chemistry, B F G Johnson. Organo-transition metal compounds and related aspects of homogenous catalysis, B L Shaw & N I Tucker.
3,003 citations
TL;DR: In this article, surface-doped Pt3Ni octahedra supported on carbon with transition metals, termed M•Pt3Ni/C, where M is vanadium, chromium, manganese, iron, cobalt, molybdenum (Mo), tungsten, or rhenium.
Abstract: Bimetallic platinum-nickel (Pt-Ni) nanostructures represent an emerging class of electrocatalysts for oxygen reduction reaction (ORR) in fuel cells, but practical applications have been limited by catalytic activity and durability. We surface-doped Pt3Ni octahedra supported on carbon with transition metals, termed M‐Pt3Ni/C, where M is vanadium, chromium, manganese, iron, cobalt, molybdenum (Mo), tungsten, or rhenium. The Mo‐Pt3Ni/C showed the best ORR performance, with a specific activity of 10.3 mA/cm2 and mass activity of 6.98 A/mgPt, which are 81- and 73‐fold enhancements compared with the commercial Pt/C catalyst (0.127 mA/cm2 and 0.096 A/mgPt). Theoretical calculations suggest that Mo prefers subsurface positions near the particle edges in vacuum and surface vertex/edge sites in oxidizing conditions, where it enhances both the performance and the stability of the Pt3Ni catalyst.
1,499 citations
TL;DR: New two-dimensional niobium and vanadium carbides have been synthesized by selective etching, at room temperature, of Al from Nb2 AlC and V2AlC, demonstrating good capability to handle high charge-discharge rates.
Abstract: New two-dimensional niobium and vanadium carbides have been synthesized by selective etching, at room temperature, of Al from Nb2AlC and V2AlC, respectively. These new matrials are promising electrode materials for Li-ion batteries, demonstrating good capability to handle high charge–discharge rates. Reversible capacities of 170 and 260 mA·h·g–1 at 1 C, and 110 and 125 mA·h·g–1 at 10 C were obtained for Nb2C and V2C-based electrodes, respectively.
1,444 citations
TL;DR: In this paper, the binding energy of the V2p3/2 core level for each vanadium oxidation state is fixed relative to the O1s level, and satellite peaks are added to the fit especially for the lower vanadium oxides.
1,323 citations