Six-membered high-entropy foams for hydrogen production by water splitting and preparation methods thereof
US12421579B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 2024 |
| Grant date | Sep 23, 2025 |
| Priority date | — |
| Expiry date | Nov 7, 2044 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/133
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Six-membered high-entropy foam for hydrogen production by water splitting and preparation method are provided. The foam consists of Ni, Fe, Cu, Co, Mo, and Pt, comprising 10 at %-25 at % of Ni, 10 at %-25 at % of Fe, 10 at %-25 at % of Cu, 10 at %-25 at % of Co, 10 at %-25 at % of Mo, and 10 at %-25 at % of Pt. Catalyst loading of the foam can reach a range of 0.8 mg/cm2-3.2 mg/cm2, which is much higher than the effective catalyst loading of most nano-catalysts. When used as catalyst for hydrogen production by water splitting, the hydrogen evolution overpotential of the surface of the six-membered high-entropy foam is within a range of 36 mV-60 mV, and the foam operates stably at industrial-level current density (500 mA/cm2). The preparation method does not require harsh environment such as high temperature or high vacuum, making the method simple and easy to implement, with low-cost raw materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.