| abstract |
The invention discloses a nickel-iron catalytic material, a preparation method thereof and its application in electrolyzing water to produce hydrogen and preparing liquid solar fuel. The material uses soluble iron salt as raw material and is prepared on a modified nickel substrate under mild conditions, and successfully prepares a nickel-iron catalytic material that can be applied to the harsh conditions of industrial alkaline electrolyzed water. The nickel-iron catalytic material includes a nickel metal base and a catalytically active layer containing iron and nickel elements. Using the nickel-iron catalyst of the present invention to promote the water splitting reaction can reduce the energy consumption per cubic hydrogen produced by industrial alkaline electrolysis water from 4.4 kWh to 4.01 kWh, thereby increasing the conversion of solar energy to methanol by 9.7 percentage points . The preparation process of the nickel-iron catalytic material is simple, the cost is low, and the scale-up preparation for industrial needs is easy to achieve. Through this process, solar energy can be converted into conventional fuels that are convenient for storage and transportation, which provides a new way to solve energy problems and environmental problems, and has huge economic and social benefits. |