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Thirdly, the use of fuel power cells is affected by air quality: the catalysts of fuel power cells are prone to poisoning during use, resulting in a decrease in catalytic activity. Common pollutants that cause poisoning include CO, H2S, NH3, NOX, SOX, etc. However, many cities in China currently have substandard air quality, containing pollutants such as sulfides and nitrides. Due to the open working principle adopted by fuel power cells, they are easily affected by air quality, which greatly affects the performance of fuel power cells.

Fourthly, the key materials of fuel power cells rely on imports: Proton exchange membranes are the key materials of fuel power cells. Although domestic companies have also promoted and mastered their production technology, currently only DuPont in the United States and a Japanese company can commercially supply them, but they do not sell them to the outside world. China's key materials for fuel power cells have long relied on imports. Once foreign sales are banned, China's fuel power cell industry will lose its material foundation support, just like the ZTE incident.

Professor Chen Quanshi, former director of the Electric Vehicle Branch of the Chinese Society of Automotive Engineers and advisor to the National Automotive Standardization Electric Vehicle Professional Committee, stated that the two key technologies for developing hydrogen fuel cell vehicles, proton exchange membranes and catalysts, have not been resolved and should be returned to the laboratory for further research. It is unreasonable to call for the development of hydrogen fuel vehicles.

As of the end of 2017, there were only 19 hydrogen refueling stations in China. According to the "roadmap for energy-saving and new energy vehicle technology", it is planned to reach 100 stations by 2020, while 1 million charging stations will be built by 2020. In terms of infrastructure construction, charging facilities are much more mature compared to hydrogen refueling facilities, which is also the fundamental advantage of pure electric vehicles compared to fuel cell vehicles. In addition, electricity bills are cheaper, more cost-effective, and more easily accepted by the market compared to hydrogen refueling fees.

Prospects for battery applications: maximizing their strengths in specific power generation fields

Ouyang Minggao, an academician of the Chinese Academy of Sciences, the overall expert group leader of the National Key Science and Technology Project for New Energy Vehicles, and a professor at Tsinghua University, believes that hydrogen fuel power cells have no advantages compared to lithium-ion batteries, and advanced passenger vehicle fuel power cell technology still needs to face the bottleneck constraints of hydrogen energy technology. Hydrogen fuel power cells must be applied to large mobile and fixed power generation devices in order to have advantages.

From the perspective of market structure in application scenarios, in recent years, 50-60% of global fuel cell system shipments have been concentrated in the fixed power generation field, with a small portion being applied in convenient and special fields.

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