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Beijing time on March 12 news, due to the development of battery technology lags behind the development of the entire technology, the evolution of mobile phones, drones was forced to slow down. There is now a new type of fuel cell that can completely change our way of charging, allowing smart phones to use one week for a single charge, allowing the drone to last up to an hour.
Researchers at Pohang University in South Korea have developed some new fuel cells. It is an ultra-small solid oxide fuel cell with a diameter of only 1.95 millimeters. The battery combines porous stainless steel, thin-film electrolyte, and electrodes, which greatly improves the Thermal stability.
"Natural" magazine's journal "Science Report" published an article saying that micro-SOFCs developed by Korean researchers use thin-film technology. The energy density of the battery is very high. If it can be successfully produced, Replace part of the lithium battery. South Korean researchers said that they used a new technology to combine porous stainless steel, thin-film electrolytes, and ultra-small heat-capacity electrodes. This is a major breakthrough, and no one in the world has done so before. Porous stainless steels are very strong in both thermal and mechanical properties and are also stable in oxidation and reduction reactions.
Previously, the research team used silicon. This material had defects, and the components quickly deteriorated and the stability was not high. The actual equipment used requires very fast “on/off†speeds. Not practical. After switching to stainless steel, researchers increased temperature, extended equipment startup time, solved mechanical problems, and improved chemical compatibility. In addition, the newly-developed micro fuel cell is manufactured using a tape-casting process, and from a commercial point of view, a solid oxide fuel cell can be mass-produced. As a third-generation fuel cell, the structure of a solid oxide fuel cell is simpler and there is no problem of corrosion and electrolyte overflow.
As oxygen ions transfer to the fuel electrode through the oxide electrolyte, the fuel cell converts hydrogen into electrical energy. At 1022 Fahrenheit (550 degrees Celsius) conditions, the solid oxide fuel cell energy density can reach 560 mW per cubic centimeter (1MW = 1000KW). The battery can also maintain the same energy density at all times during rapid thermal cycling.
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