According to the US Daily Science website on July 17, scientists from the University of Kiel and the University of Hamburg, Germany, developed the world’s lightest material, Aerographite, with a density of only 0.2 milligrams. / Cubic centimeters. Although it looks like a black opaque sponge, it is made up of 99.99% air. According to the researchers, the new material is stable, has good conductivity, extensibility, and is very rugged. Therefore, it can be widely used in batteries, aerospace, and electrical shielding. The study was published in the magazine "Advanced Materials."
"Flying graphite" is a network of porous carbon tubes that are three-dimensionally interwoven on the nanometer and micrometer scales. In spite of its light weight, the elasticity is very good and it has extremely strong compression resistance and strain loads. It can be compressed 95% and then restored to its original size. It also absorbs almost all light.
Because of its unique characteristics, "flying graphite" can be installed on the electrodes of lithium-ion batteries. This results in less electrolyte solution required by the battery, which greatly reduces the quality of the battery, and the obtained small battery can be used in electric. On a car or electric bike. Future applications include the use of conductive materials for composites, which can potentially prevent static interference from many people.
In addition, "flying graphite" can also be applied to the electronic equipment used in the aerospace and satellite fields because these devices must be able to withstand a great deal of vibration; moreover, new materials are also expected to be used in water purification as adsorbents for absorbing water Contaminants because it can oxidize or decompose and remove contaminants in water. Its superior mechanical stability, electrical conductivity, and large surface area will also benefit scientists. It can even be used in incubators or ventilators to purify the ambient air. (Liu Xia)
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