Japanese researchers have recently developed a new type of electrode that uses special graphene materials instead of platinum as a catalyst to produce the hydrogen fuel needed for fuel cell vehicles. This kind of electrode can electrolyze water. If it is used to produce fuel, it can greatly reduce the cost in the hydrogen refueling station for fuel cell vehicles.
A fuel cell vehicle uses electric power generated by a chemical reaction between hydrogen loaded on the vehicle and oxygen in the air to drive the vehicle. 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 alternatives.
A research team led by Toshi Ito, a teaching assistant at Tohoku University in Japan, tried to use graphene as an alternative catalyst. Graphene is a single-layer, sheet-like structure made of carbon atoms and is inexpensive. The researchers first produced 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 has been 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 the platinum catalyst. It is expected that after this technology is marketed, the cost of the fuel cell can be greatly reduced. (Reporter Lan Jianzhong)
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