Back to Search
Start Over
The positive difference effect and anomalous hydrogen evolution on the anodically polarized Mg surface in alkaline NH4+ containing solutions.
- Source :
- Journal of Materials Science; May2024, Vol. 59 Issue 19, p8535-8555, 21p
- Publication Year :
- 2024
-
Abstract
- The difference effect and hydrogen evolution behavior of pure Mg in alkaline NH<subscript>4</subscript><superscript>+</superscript> containing solutions are systematically investigated. The Mg electrode exhibits a positive difference effect, rather the traditional negative difference effect, with the anomalous hydrogen evolution in the alkaline 0.1 M (NH<subscript>4</subscript>)<subscript>2</subscript>SO<subscript>4</subscript>, 0.1 M NH<subscript>4</subscript>HCO<subscript>3</subscript> and 0.05 M (NH<subscript>4</subscript>)<subscript>2</subscript>CO<subscript>3</subscript> solutions. This is primarily attributed to the corrosion product film dissolution effect of NH<subscript>4</subscript><superscript>+</superscript> and the formation of the black corrosion products. The hydrogen evolution kinetics with the difference effects are deduced and explained by the prevailing incomplete film Mg<superscript>+</superscript> mechanism and enhanced catalytic activity mechanism. [ABSTRACT FROM AUTHOR]
- Subjects :
- HYDROGEN evolution reactions
HYDROGEN
CATALYTIC activity
PRODUCT attributes
Subjects
Details
- Language :
- English
- ISSN :
- 00222461
- Volume :
- 59
- Issue :
- 19
- Database :
- Complementary Index
- Journal :
- Journal of Materials Science
- Publication Type :
- Academic Journal
- Accession number :
- 177220299
- Full Text :
- https://doi.org/10.1007/s10853-024-09716-z