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Thermodynamically driven metal diffusion strategy for controlled synthesis of high-entropy alloy electrocatalysts.
- Source :
- Chemical Communications; 10/7/2021, Vol. 57 Issue 78, p10027-10030, 4p
- Publication Year :
- 2021
-
Abstract
- We report a thermodynamically driven metal diffusion strategy for the controlled synthesis of high-entropy alloy (HEA) nanocrystals using electrospun carbon nanofibers (CNFs) as nanoreactors. This conceptual pathway is resistant to high temperatures and produces a series of medium-entropy alloy (MEA) and HEA nanocrystals supported on CNFs by adjusting the numbers and kinds of elements. The FeCoNiCrMn/CNFs obtained the lowest overpotential of 345 mV at 50 mA cm<superscript>−2</superscript> compared to MEA. The operando electrochemical Raman results indicate that the enhanced electron transfer from low-electronegativity Fe, Ni, Cr and Mn to the orbit of the Co atom makes Co a local negative charge center, leading to the decrease in absorption energy of OH. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13597345
- Volume :
- 57
- Issue :
- 78
- Database :
- Complementary Index
- Journal :
- Chemical Communications
- Publication Type :
- Academic Journal
- Accession number :
- 152745315
- Full Text :
- https://doi.org/10.1039/d1cc03072h