Some people ask, electric vehicles are not polluted when they are used, and power plants are not polluted? Is the electric car environmentally friendly?
Some people do not understand that the development of domestic electric vehicles is so leading, why do they still attach importance to the development of hydrogen energy? Hydrogenation 3 minutes endurance 850km, hydrogen fuel and pure electricity who is the future?
Centralized pollution control will greatly reduce pollution
The environmental protection of electric vehicles is the result of centralized pollution control. There are many ways to generate electricity, wind, hydro, solar, nuclear and thermal power, and the most polluting is thermal power generation. Even if the electricity charged by electric vehicles is all generated by thermal power, their environmental pollution is much smaller than that of fuel vehicles, thermal power plants will treat pollutants in a unified manner, sulfur oxides, nitrogen oxides and solid waste and sewage are discharged after harmless treatment, and power plants are far from living areas. However, the pollutants in the exhaust gas are emitted everywhere in the fuel vehicles driving on the road, polluting the environment and destroying the air quality in the living area. This is the significance of the development of new energy vehicles, electric energy is a good way, fuel cells (this article mainly talks about hydrogen energy) is also.
Pure electric has limitations, and hydrogen fuel vehicles make up for it
New energy vehicles are not limited to one form of electric, pure electric vehicles have its limitations, and the Beijing Winter Olympics will use two types of vehicles: electric + hydrogen fuel. The Winter Olympics will have three divisions, Beijing Division, Yanqing Division and Zhangjiakou Division, of which yanqing and Zhangjiakou areas are mainly snowy mountains, the temperature is particularly low, the endurance of electric buses will be seriously affected, the use of fuel buses does not meet the theme of the "Green Olympics", so more than 2,000 hydrogen fuel cell vehicles (including Toyota's second-generation Mirai hydrogen fuel cell passenger cars, Costa hydrogen engine buses, Foton hydrogen fuel buses, etc.) and dozens of hydrogen refueling stations.
At present, solid-state batteries and semi-solid-state power batteries are not yet popular, and low temperatures have a significant impact on the capacity and performance of liquid batteries, and low temperatures affect the endurance of electric vehicles. In addition, slow charging speed is also a short board for electric vehicles. Taking Tesla Model 3 as an example, the 556km version of the 0-80% fast charging time is 1 hour, relative to the fuel vehicle or hydrogen fuel vehicle, the efficiency is much lower, and the super current of the fast charge has irreversible damage to the battery; the home charging pile cannot provide such a large current (the home grid burden is large), and the slow charge needs to be fully charged for 10 hours. In the scenario of not relying on fuel vehicles and having strict demands on efficiency, electric vehicles cannot be satisfied, and hydrogen fuel cells just fill this scene.
The introduction of 140 Toyota's second-generation Mirai hydrogen fuel cell vehicles in China is an example. The car has a range of 850km when full of hydrogen, and it takes only 3 minutes to refuel. The reaction of the injected hydrogen and the oxygen in the air, the only discharge is water, as long as the discharge pipe is not polluted, direct drinking is no problem, so it is the same as the electric vehicle, zero pollution in use.
The powertrain of a hydrogen fuel vehicle consists of a hydrogen storage tank, a stack (fuel cell), an electric motor, and a power battery. Hydrogen fuel is not perfect and has not yet been industrialized
In the mainland, more than 90% of hydrogen production raw materials come from the chemical reforming of traditional energy sources, of which 48% come from natural gas reforming, 30% from alcohol reforming, 18% from coke oven gas reforming, and only about 4% from electrolyzed water. Roughly estimated, when the price of natural gas is 2.52 yuan / m3, the cost of hydrogen production is 1.15 yuan / m, and the most important to the development of hydrogen fuel vehicles in Japan, hydrogen is mainly dependent on imports; hydrogen storage costs are high, on-board hydrogen storage tanks need very high strength, rifles are impenetrable, the cost of large gas tanks used in transportation and hydrogen refueling stations is even higher; in addition, the stability and durability of fuel cells need to be improved.
Like electric vehicles, hydrogen fuel vehicles also need to be industrialized to have large-scale practical value, subsidies and policy support. The development of domestic electric vehicles has been early, has achieved fruitful results, in the lithium battery, vehicle preparation, pure electric vehicle supporting in the world's leading position, the birth of like BYD, Ningde era, Weilai, Xiaopeng and a large number of supporting enterprises, the formation of monopoly advantages. During the 14th Five-Year Plan period, hydrogen energy, as a key development energy source, was included in the key planning content of more than 30 provinces, "Beijing - International Hydrogen Energy City", "Hydrogen Energy Zhangjiakou", "Liaoning - Hydrogen Dynamic Corridor", "Shandong - China Hydrogen Valley", "Guangdong - Hydrogen Energy Industrial Park", "Yunnan - 1113 Hydrogen Energy Pattern", looking forward to China's hydrogen energy on the world stage to reproduce pure electric brilliance.
Write at the end
Hydrogen fuel vehicles are very limited, it will not replace the electric energy system, but will only complement each other and promote development. In the past ten years, a bottle of household gas has risen from 10 yuan to 120 yuan, gasoline from 2 yuan to 9 yuan, and the price of electricity has dropped from 0.8 yuan to 0.6 yuan, so pure electricity should be the mainstream of the future, and hydrogen fuel vehicles are used to fill the special scenes that pure electricity cannot meet.