Since the fuel cell vehicle emits only a small amount of water and emits almost no other pollutants, it is considered to be a clean next-generation automobile. However, one of the reasons for the high battery cost of fuel cell vehicles is the use of platinum as a catalyst in the battery. The scientific community has therefore been developing alternative cheap catalysts as an alternative catalyst.
A research team led by Toshi Ito, a teaching assistant at Tohoku University in Japan, tried graphene as an alternative catalyst. Graphene is a single-layer, sheet-like structure made of carbon atoms and is inexpensive. The researchers first made a three-dimensional structure using flake-shaped graphene, and then applied nitrogen vapor and sulfur to the three-dimensional structure by vapor deposition. As a result, it was found that the greater the amount of nitrogen and sulfur deposited, the more efficient it is to produce more hydrogen.
The researchers pointed out that if nickel is added to the graphene catalyst, the hydrogen production capability can exceed that of the platinum catalyst. It is expected that after the marketization of this technology, the cost of the fuel cell can be greatly reduced.
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