Australian scientists claim that they have found a cheaper and more efficient method to separate hydrogen in water by using readily available iron and nickel catalysts instead of expensive rare ruthenium, platinum and iridium catalysts, which Large-scale hydrogen plants are favored and are thousands of times more expensive than the former.
In a paper published in Nature Communications, the research team said that they have successfully replaced the expensive platinum on the carbon catalyst with a "JANUS nanoparticle catalyst with a nickel-iron oxide interface", and the resulting The circuit is able to decompose water in the way we know, and it has achieved the highest energy efficiency of 83.7% to date.
Professor Chuan Zhao from the School of Chemistry at the University of New South Wales said: "What we did was apply a catalyst to the electrode to reduce energy consumption. On this catalyst there is a tiny nano-scale interface where iron and nickel meet at the atomic level , Becomes the active site for decomposing water. Here, hydrogen and oxygen are separated and captured as fuel, and oxygen can be released as an environmentally friendly waste. "
The researchers said that the nanoscale interface fundamentally changed the properties of these materials. The test results show that the activity of the nickel-iron catalyst is the same as that of the platinum catalyst that generates hydrogen. Another benefit is that our nickel-iron electrodes can catalyze the production of hydrogen and oxygen, so we can reduce production costs by using elements rich in the earth.
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