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Recently, researchers at the University of Maryland announced that they have developed a solid oxide fuel cell that is much more efficient than gasoline engine fuel cells, and that the reaction temperature has dropped from 900°C to 650°C, if it has been reduced to 350°C. , it can be applied in the car.
If you want to drive an electric car for long-distance travel, the electricity stored inside the car may not be able to take you to your destination. At this time, you still have to seek help from a traditional gasoline engine. However, the problem is that such cars, when driven by the engine, have a lower efficiency than ordinary cars because they have a heavy battery kit. Is there a more efficient way to generate electricity?
Recently, researchers at the University of Maryland announced that they have developed a fuel cell that is much more efficient than a gasoline engine. Similar to other fuel cells, this kind of fuel cell generates electricity through a chemical reaction, so its power generation efficiency is burning. Generator 2 times.
In fact, this type of fuel cell developed by researchers is an upgraded version called the Solid Oxide Fuel Cell (SOFC). Unlike the hydrogen fuel cells used in automobiles, SOFC can use such things as diesel and gasoline. Fuels such as natural gas generate electricity. Currently, this kind of battery has been applied to building power supply, but it is generally believed that applying SOFC to a car is a bit impractical, because it is too bulky and usually needs to react at 900°C.
By changing the design of the solid electrolyte material and the battery, researchers can now create a more compact SOFC. Since previous SOFCs rely mainly on solid electrolytes for structural support of the battery, the electrolytes are usually relatively thick. However, too thick electrolyte is not conducive to the generation of electricity, so researchers designed a solution that does not rely on electrolyte support. At this time, thinner electrolyte can produce higher energy output at low temperatures. The multi-layered electrolyte design can produce more power. The new battery's power generation efficiency is 10 times that of the normal solid oxide battery. If the same power is generated, the new battery is smaller than the gasoline generator. A new 10 cm x 10 cm battery can be replaced. The original bulky battery pack drove the electric car.
In addition, the researchers reduced the temperature of the new battery to 650°C. High temperature is a major obstacle to commercial applications, because if the car is running at high temperatures, manufacturers must use expensive temperature-resistant materials to make supporting equipment, otherwise cheap materials will endure failure due to frequent temperature rise and aging, and Operating temperatures that are too high will also prolong the car's start-up time. Therefore, researchers hope to reduce the reaction temperature to 350 °C for use in automobiles.
This study is part of a U.S. Department of Energy plan that aims to make solid oxide fuel cells more practical. Eric Wachsman, director of the Energy Research Center at the University of Maryland, believes that the advantages of the new battery allow it to compete with gasoline generators. At present, he only produces a smaller fuel cell, which is still far from the real engineering application.
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