The reporter learned from the Ningbo Institute of Materials Science and Technology that the research team recently developed an aluminum-air battery power generation system based on a graphene air cathode. The energy density of the battery system is as high as 510Wh/Kg (watt-hour per kilogram), capacity 20 kilowatt hours, and output power. 1000 watts. Through practical demonstrations, the battery system can simultaneously supply power for a TV set, a computer, an electric fan, and 10 60-watt lighting bulbs, which preliminarily verified the power generation and supply capability of the aluminum air battery system. Graphene can be called a "fighter" in materials. China uses graphene to develop a kilowatt aluminum air battery, which is a major breakthrough in the field of new energy and new materials. Xue Yejian, a senior engineer at the Ningbo Institute of Industry and Technology, Chinese Academy of Sciences, told reporters that the core material of aluminum air batteries is a cathode catalyst doped with graphene. The product uses an aluminum plate as the anode, and the air cathode of the graphene-based composite catalyst is inserted into a container containing an electrolyte, and aluminum reacts with air to produce electricity. This aluminum air battery currently has 22 national patents, and can be used later in many fields such as electric vehicles and communication base stations. Because the graphene-based compound oxide is used as a catalyst, the dispersion of the material is good, and the internal loss of the battery itself can be reduced. The specific energy of the aluminum air battery is several times higher than that of an ordinary lithium battery, and the battery life is greatly improved. If it is used in a new source car, it can reduce the battery volume, make the body light and greatly improve the cruising range; if used for mobile phone charging treasure, you can greatly increase the output power; and if the communication base station using this battery, the advantages are obvious At present, China's telecommunications base stations use lead-acid batteries, which are replaced every two or three years. It is very difficult for some remote areas to update. However, the service life of aluminum air batteries is 15 to 20 years, which can be solved to a large extent. A problem. The reporter also learned that in the future aluminum air batteries can also be used on lanterns and buoy lights, because when seagoing personnel encounter an emergency power shortage, they can spot seawater and connect the wires to generate electricity. This can also make the journey more safe and convenient for some donkey riders. According to Dr. Zhaoping Liu, a researcher of the Key Laboratory of Graphene Application Research in Zhejiang Province, the pilot test production line for cathode air-battery pilot production of aluminum-air batteries using graphite-based composite oxides has been completed, and it can be mass-marketed in the future.
Pressure sensor usually consists of a pressure sensor and a signal processing unit for measuring the pressure of liquids and gases.
According to different test pressure types, pressure sensors can be divided into gauge pressure sensors, differential pressure sensors and absolute pressure sensors. According to the working principle, it can be divided into Ceramic Pressure Sensor, diffusion silicon pressure sensor, piezoresistive pressure sensor, sapphire pressure sensor and so on.
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