Hydrogen fuel cells for its comprehensive advantages of zero-emission, high energy density and conversion rate, long battery life and short time refueling hydrogen ect., is considered to be one of the "best path" for the development of new energy vehicles. With restrictions FCV (Fuel Cell Vehicle) development bottlenecks continue to be resolved, the international leader in the fuel cell technology company's products have been sent to the commercial promotion levels; in the case of cost, over the past 10 years, the production costs of fuel cell system has plummeted with also a certain decline space left; about the support facilities, governments have stepped up efforts to support hydrogen refueling station to relieve the problem in the operation of fuel cell.

 

The operating principle of hydrogen fuel cell vehicles is that the hydrogen is sent to the fuel cell anode plate (anode), an electron in the hydrogen atom is separated out through the effect of catalyst; then hydrogen ions (protons) which lose electrons will pass through the proton exchange membrane to arrive at the fuel cell cathode plate (positive electrode), while the electron can not pass through the proton exchange membrane, only through an external circuit to reach the cathode plate of the fuel cell, thereby generating a current in the external circuit. After the electrons reach the cathode plate, they will recombine with the hydrogen ions and oxygen atoms to water. Since oxygen supplied to the cathode plate can be obtained from the air, as long as continue to supply hydrogen to the anode plate and the air to the cathode plate with timely water (steam) away, electricity will be continue to be provided. Theoretically, hydrogen fuel cells emit only water, not carbon dioxide, sulfur dioxide, nitrogen dioxide and other products of and the fossil fuels, thus to ease the global warming and improve air quality.

 

The study found that WO₃ has a strong corrosion resistance, does not react with almost any acid without the hydrofluoric acid, which is particularly suitable for the high humidity, acidic environment of fuel cell. In addition, the conventional Pt catalyst belongs to precious metal, the addition of WO₃ can not only reduce the cost of the catalyst; at the same time, since the WO₃ and the metal will produce synergistic catalytic effect which improves the efficiency of the catalyst; in addition, WO₃ has the corrosion resistant, as a partial substitute carrier C to longer the life of the catalyst, and also indirectly improve the catalytic efficiency.