Hydrogen and Oxygen Overpotentials of Nickel-Tin Alloys in Alkaline Solution

Surface Analysis of hydrogen loaded nickel alloys

E. Campari, S. Focardi, V. Gabbani, V. Montalbano, F. Piantelli, S. Veronesi * Dipartimento di fisica, Università di Bologna–Centro I.M.O. ** Dipartimento di fisica, Università di Siena–Centro I.M.O. + I.N.F.M.–UdR Siena We present a surface analysis of nickel alloy rods loaded with hydrogen. By comparing these with a blank (unused) metal rod, morphological differences and a different compositi...

Electrochemical Deposition of γ-Phase Zinc-Nickel Alloys from Alkaline Solution

Zinc-nickel alloys with 8-15% nickel were deposited onto stainless steel for corrosion protection. Alkaline deposition conditions were utilized given that alkaline systems have been found to offer superior substrate coverage which results in better corrosion protection of the metal substrate (stainless steel) compared to acid bath depositions. This method utilizes ammonium hydroxide as the base...

Separating hydrogen and oxygen evolution in alkaline water electrolysis using nickel hydroxide

Low-cost alkaline water electrolysis has been considered a sustainable approach to producing hydrogen using renewable energy inputs, but preventing hydrogen/oxygen mixing and efficiently using the instable renewable energy are challenging. Here, using nickel hydroxide as a redox mediator, we decouple the hydrogen and oxygen production in alkaline water electrolysis, which overcomes the gas-mixi...

Evolution Reaction in Aqueous Alkaline Solution Hydrous Nickel Oxide: Redox Switching and the Oxygen

Nickel cobalt phosphides quasi-hollow nanocubes as an efficient electrocatalyst for hydrogen evolution in alkaline solution.

A template-engaged strategy is used to synthesize nanostructured metal phosphides with different compositions. Among the as-synthesized metal phosphides, nickel cobalt phosphides quasi-hollow nanocubes exhibit the best electrocatalytic activity for hydrogen evolution reaction in terms of lower overpotential and smaller Tafel slope in alkaline solution.