In Situ Grown RuNi Alloy on ZrNiN x as a Bifunctional Electrocatalyst Boosts Industrial Water Splitting
Qingdao University of Science and Technology · City University of Hong Kong · +4 more institutions
Abstract
Abstract Alkaline water electrolysis represents a pivotal technology for green hydrogen production yet faces critical challenges including limited current density and high energy input. Herein, a heterostructured bimetallic nitrides supported RuNi alloy (RuNi/ZrNiN x ) is developed through in situ epitaxial growth under ammonolysis, achieving exceptional bifunctional activity and durability for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in 1 m KOH electrolyte. The RuNi/ZrNiN x exhibits a HER current density of −2 A cm −2 at an overpotential of 392.8 mV, maintaining initial overpotential after 1000 h continuous electrolysis at −500 mA cm −2 . For OER, it delivers a current density of…
Citation impact
- FWCI
- 16.32
- Percentile
- 100%
- References
- 65
Authors
8Topics & keywords
- Overpotential
- Bifunctional
- Oxygen evolution
- Materials science
- Electrocatalyst
- Water splitting
- Alkaline water electrolysis
- Chemical engineering