Hydrogen fuel cells are one of today's renewable energy solutions, but scientists have not tackled the catalyst problems of battery-critical materials, but scientists at the State University of New York at Buffalo (UB) have discovered a better, cheaper catalyst than platinum, or licensing. Further reduce the cost of hydrogen fuel electric vehicles.
The catalyst is called cofacial cobalt porphyrins - if it is not a chemical, it may not even know what it is, but this obscure and cheap compound is actually a good at driving hydrogen and oxygen reaction. Research is expected to accelerate the development of hydrogen fuel cell technology.
Different from the strange name, the catalyst is not complicated at all. It is as simple as making homemade chocolate at home: put the cobalt-violet and yttrium into the flask, stir and heat, and after standing for 2 days, a brand-new hydrogen fueling agent It's finished.
This kind of self-assembled catalyst is very simple to manufacture and the materials are very cheap. Timothy Cook, assistant professor of chemistry at UB School of Arts and Chemistry, said that the catalyst material contains ruthenium and cobalt, which is even cheaper than platinum, and its performance is better than today. The platinum catalyst on the market is even better.
Cook pointed out that as soon as the molecular self-assembly is thought, Lego will appear in the brain. These construction elements are designed to be assembled, like blocks or puzzles. The difference is that these bricks react and attract each other, put them together and apply a little energy, and it will naturally come together when the building blocks are assembled.
However, it is not easy to make chemical bonds successfully joined. In order to ensure that the chemical bonds will be perfectly connected, study to create purple and fixed enamel. Coplanar cobalt gamma is composed of two kinds of cobalt phosphatase molecules. The molecules are stacked like a sandwich. The middle is connected with helium. After the cobalt phosgene solution and the hydrazine solution are mixed and heated, they will be assembled into a coplanar cobalt violet within 2 days. Quality catalyst.
Scientists have known for a long time that purple pigment can capture and decompose oxygen, but Cook said that it is very difficult to create catalysts for artificial rhodopsin, the process is expensive and complicated, the steps are very numerous, and the final yield is also very small.
However, since the assembly completely solved this problem, the Cook team used 79 grams of starting material to make 79 grams of coplanar cobalt cystolith, which was only 1% lower than other laboratories. And the study can also easily test different amounts of hydrazine, so that it is easier to adjust the electrochemical quality of the compound to create a more ideal catalyst.
The catalyst function, like the platinum catalyst, can promote the oxidation reaction in the battery, and this technology is expected to reduce the cost of hydrogen fuel cell vehicles in the future, and low-cost fuel cells can also promote the development of other hydrogen energy equipment, Cook said, in order to reduce With the price of hydrogen fuel vehicles, we urgently need a catalyst that is less expensive than platinum.
The paper's first author, Amanda N. Oldacre, said that they can use self-assembly technology to produce cheaper catalyst materials in 48 hours, without even using time-consuming and cumbersome purification steps. The current study has been published in the Chemistry: A European Journal.
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