Composite comprising a platinum-alkaline earth metal alloy, fuel cell comprising the composite, and water electrolysis cell and methods for their production
By preparing a platinum-alkaline earth metal binary alloy on a carbon support, the problem of insufficient activity and durability of platinum-based catalysts in fuel cells and water electrolysis cells was solved, and the economy and stability of the catalyst were improved, making it suitable for oxygen reduction reaction and hydrogen evolution reaction.
Patent Information
- Application Number
- CN202280007850.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2021-11-01
- Filing Date
- 2022-11-01
- Publication Date
- 2026-05-12
- Estimated Expiration
- 2042-11-01
AI Technical Summary
In the existing technology, platinum-based catalysts have shortcomings in terms of activity, durability and economy in fuel cells and water electrolysis batteries. In particular, the synthesis of platinum-alkaline earth metal alloys is difficult to achieve, which limits the improvement of catalyst performance.
By preparing platinum-alkaline earth metal binary alloys on carbon supports and controlling the E1/E2 ratio in the Pt4f XPS energy spectrum to be ≤0.85, granular PtSr, Pt2Ca, Pt3Mg alloys are formed. Combined with solvothermal synthesis and heat treatment methods, dealloying and poisoning phenomena are suppressed, and the stability of the catalyst is improved.
Significant improvements have been made in the economy, activity, and stability of the catalyst, making it suitable for oxygen reduction and hydrogen evolution reactions, and enhancing the performance of fuel cells and water electrolysis cells.