(Invited) Exploring the Roles of Interfacial Water for the HER/HOR of Pt-Surfaces in Aqueous Solutions
Abstract
Previous studies focus mainly on the inherent properties of the catalysts such as the metal-hydrogen binding energy (EM-H) to rationalize their catalytic activities toward the hydrogen evolution and oxidation reactions (HER/HOR) in aqueous solutions. While this strategy proves effective in rationalizing and predicting the HER/HOR activity trend across a wide range of elements in dilute acidic solutions as per the Sabatier Principle, it cannot fully account for the sluggish HER/HOR kinetics of many transition metals in alkaline solutions. Recent works suggest that interfacial water plays critical roles in affecting the HER/HOR kinetics of Pt-based surfaces in alkaline solutions.1-5 However, the specific roles of interfacial water for the HER/HOR kinetics remain elusive, partly because of the lack of methods to explore the surface-electrolyte interface.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- May 30, 2021
- Source ID
- 10.1149/ma2021-01381236mtgabs
Entities
People
- Ershuai Liu
- Qiang Sun
- Qingying Jia