Trends in electrocatalytic activity and stability of transition-metal nitrides
Journal Article
·
· Chem Catalysis
- Columbia University, New York, NY (United States)
- Florida A & M University, Tallahassee, FL (United States)
- Kyungpook National University, Daegu (Korea, Republic of)
- Columbia University, New York, NY (United States); Washington State University, Pullman, WA (United States)
- Columbia University, New York, NY (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States)
Transition metal nitrides (TMNs) are a class of electrocatalyst support materials similar to transition metal carbides (TMCs) with the advantage of avoiding the issues arising from graphitic carbon surface deposits during synthesis. Inspired by previous studies suggesting that TMCs could be used to reduce Pt loading for the hydrogen evolution reaction (HER), this work explored the feasibility of TMN-supported Pt and Au as HER electrocatalysts. Here this study established a volcano-like trend between electrochemical HER activity and hydrogen-binding energy (HBE) calculated from density functional theory. The Pt/TiN and Au/TiN materials were used to extend knowledge from well-characterized thin films to powder catalysts. In situ X-ray absorption spectroscopy (XAS) measurements provided additional characterization of the Pt/TiN and Au/TiN catalysts under HER conditions. Trends in the electrochemical stability of TMNs were also investigated over a wide range of potentials and pH values, which can be used to guide future studies for TMN-supported electrocatalysts.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division (CSGB); National Science Foundation (NSF)
- Grant/Contract Number:
- SC0012704
- OSTI ID:
- 2338115
- Report Number(s):
- BNL--225509-2024-JAAM
- Journal Information:
- Chem Catalysis, Journal Name: Chem Catalysis Journal Issue: 2 Vol. 4; ISSN 2667-1093
- Publisher:
- Cell PressCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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