Activity of Transition-Metal (Manganese, Iron, Cobalt, and Nickel) Phosphates for Oxygen Electrocatalysis in Alkaline Solution

ChemCatChem ◽  
2015 ◽  
Vol 8 (2) ◽  
pp. 372-379 ◽  
Author(s):  
Yi Zhan ◽  
Meihua Lu ◽  
Shiliu Yang ◽  
Chaohe Xu ◽  
Zhaolin Liu ◽  
...  
Keyword(s):  
Transition Metal ◽  
Alkaline Solution ◽  
Iron Cobalt ◽  
Nickel Phosphates ◽  
Cobalt And Nickel

ChemInform Abstract: Activity of Transition-Metal (Manganese, Iron, Cobalt, and Nickel) Phosphates for Oxygen Electrocatalysis in Alkaline Solution.

ChemInform ◽  
2016 ◽  
Vol 47 (15) ◽  
pp. no-no
Author(s):  
Yi Zhan ◽  
Meihua Lu ◽  
Shiliu Yang ◽  
Chaohe Xu ◽  
Zhaolin Liu ◽  
...  
Keyword(s):  
Transition Metal ◽  
Alkaline Solution ◽  
Iron Cobalt ◽  
Nickel Phosphates ◽  
Cobalt And Nickel

The apparent metallic valencies of transition metals in solid solution

1961 ◽  
Vol 261 (1305) ◽  
pp. 175-188 ◽  
Keyword(s):  
Transition Metal ◽  
Transition Metals ◽  
Conduction Band ◽  
Metal Content ◽  
Copper Alloys ◽  
Manganese Content ◽  
Axial Ratio ◽  
Lattice Contraction ◽  
Iron Cobalt ◽  
Cobalt And Nickel

According to previous work, solution of a third metal in the close-packed hexagonal ζ-phases which occur at approximately 1.5 electrons per atom in certain binary copper alloys causes the lattice spacings to vary in such a way that the axial ratio remains constant at a constant valency electron:atom ratio. On the assumption that this remains true when the third metal is a transition metal of the Vlllth Group of the Periodic Table, the lattice spacings of solutions of manganese, iron, cobalt and nickel in the copper-germanium ζ-phase have been examined. From the observed axial ratios, the contributions of the transition metals to the conduction band of the alloy have been assessed and expressed as an effective valency value. This value, at the lower electron:atom ratios (approximately 1.39), is unity for iron, cobalt and nickel, but decreases as the electron:atom ratio rises. For manganese effective valency values at the lower electron:atom ratios vary from 1.64 to 1.42 according to manganese content; again the values decrease with increasing electron:atom ratio. The dependence of the effective valency values on transition metal content is such that, if a lattice contraction is produced by the solution of the transition metal in the binary ζ-phase (cobalt, nickel) the valency decreases as the transition metal content rises. Lattice expansion (manganese) leads to the reverse effect, while the effective valency of iron, which has little effect on the lattice spacings, is virtually independent of iron content. The results are discussed in terms of transfer of electrons between the conduction band of the alloy and the virtual bound 3 d states localized on the transition metal atoms in solution.

scholarly journals ANODIC OXYGEN EVOLUTION ON IRON, COBALT AND NICKEL SILICIDES IN ALKALINE ELECTROLYTE

2018 ◽  
Vol 59 (1) ◽  
pp. 57
Author(s):  
V.V. Panteleeva ◽  
A.B. Shein
Keyword(s):  
Oxygen Evolution ◽  
Alkaline Solution ◽  
Oxygen Evolution Reaction ◽  
Alkaline Electrolyte ◽  
Iron Cobalt ◽  
Impedance Measurements ◽  
Nickel Silicides ◽  
Kinetics Of ◽  
Cobalt And Nickel

The kinetics of oxygen evolution reaction on iron, cobalt and nickel monosilicides in (0.1 – 5.0) M NaOH was studied using methods of polarization and impedance measurements. The values of derivatives dE/dlgi, dlgi/dpH, dE/dpH were determined. The oxygen evolution on FeSi, CoSi and NiSi electrodes in alkaline solution was established to have regularities which are characteristic to Fe, Co and Ni electrodes, respectively.

Progress in preparation and characterization of silylene iron, cobalt and nickel complexes

2021 ◽  
Author(s):  
Wenjing Yang ◽  
Yanhong Dong ◽  
Hongjian Sun ◽  
Xiaoyan Li
Keyword(s):  
Nickel Complexes ◽  
Electron Cloud ◽  
Synthesis And Characterization ◽  
Iron Cobalt ◽  
Cloud Density ◽  
Cobalt And Nickel

The synthesis and characterization of Fe, Co and Ni complexes supported by silylene ligands in recent ten years are summarized. Due to the decrease of electron cloud density on Si...

Sign in / Sign up

Export Citation Format

Share Document