Fast site-to-site electron transfer of high-entropy alloy nanocatalyst driving redox electrocatalysis
Qingdao University of Science and Technology · Chongqing Normal University · +1 more institution
Abstract
Abstract Designing electrocatalysts with high-performance for both reduction and oxidation reactions faces severe challenges. Here, the uniform and ultrasmall (~3.4 nm) high-entropy alloys (HEAs) Pt 18 Ni 26 Fe 15 Co 14 Cu 27 nanoparticles are synthesized by a simple low-temperature oil phase strategy at atmospheric pressure. The Pt 18 Ni 26 Fe 15 Co 14 Cu 27 /C catalyst exhibits excellent electrocatalytic performance for hydrogen evolution reaction (HER) and methanol oxidation reaction (MOR). The catalyst shows ultrasmall overpotential of 11 mV at the current density of 10 mA cm −2 , excellent activity (10.96 A mg −1 Pt at −0.07 V vs. reversible hydrogen electrode) and stability in the alkaline medium.…
Citation impact
- FWCI
- 14.87
- Percentile
- 100%
- References
- 49
Authors
11Topics & keywords
- Overpotential
- Electrocatalyst
- Catalysis
- Redox
- Electron transfer
- Materials science
- Alloy
- Chemical engineering