Recently, under the support of the Chinese Academy of Sciences, the National Natural Science Foundation of China, the Ministry of Science and Technology, and the Beijing Municipal Education Commission, the Institute of Physics, Chinese Academy of Sciences/Beijing Advanced Laboratory for Advanced Materials and Structures for Condensed Matter Physics The mesoscopic physics research group proposed a method for preparing a simple carbon nanotube thin film supercapacitor with a simple structure, light weight, high energy density, and high power density.
The research group's doctoral student Niu Zhiqiang, researcher Zhou Wei, academician of Chinese Academy of Sciences Si Sishen and others collaborated with the Institute of Intelligent Polymers, Institute of Intelligent Polymers, University of Wollongong, Australia, and the Clean Energy Laboratory of the Institute of Physics to take full advantage of the high conductivity of self-supporting flexible carbon nanotube films grown directly. With the characteristics of high mechanical properties, high self-adsorption, and other characteristics, the new compact ultracapacitor developed exhibits an ideal double-layer capacitance behavior. In the potential reversal, a very good current response was exhibited. The calculated mass specific capacitance was 35F/g, the energy density was 43.7Wh/kg, and the maximum power density was 197.3 kW/kg, much larger than that of current activated carbon materials. The energy density (1 to 10 Wh/kg) and power density (2 to 10 kW/kg) of conventional supercapacitors. In addition, the compact supercapacitors also exhibit excellent frequency characteristics.
It is understood that the development of energy storage devices with long cycle life, high specific energy, and high power density has always been one of the hot topics for researchers in many fields. With the development of social science and technology, the requirements for power supply in many fields such as electric vehicles have been greatly improved. Although traditional capacitors have large power, they have limited energy density and cannot meet actual needs.
Supercapacitors, also known as electrochemical capacitors, have a performance intermediate between conventional capacitors and batteries, and have the characteristics of a high specific energy of a battery and a high specific power of a conventional capacitor, and a backup power source for a hybrid vehicle, a high-power radar, and a mobile phone. There are important applications for laptops and batteryless remote controls. With the development of portable electronic devices, the assembly of traditional supercapacitors has far from satisfying the current demand for the development of electronic devices, and supercapacitors are moving toward a light and simple direction.
The research group's doctoral student Niu Zhiqiang, researcher Zhou Wei, academician of Chinese Academy of Sciences Si Sishen and others collaborated with the Institute of Intelligent Polymers, Institute of Intelligent Polymers, University of Wollongong, Australia, and the Clean Energy Laboratory of the Institute of Physics to take full advantage of the high conductivity of self-supporting flexible carbon nanotube films grown directly. With the characteristics of high mechanical properties, high self-adsorption, and other characteristics, the new compact ultracapacitor developed exhibits an ideal double-layer capacitance behavior. In the potential reversal, a very good current response was exhibited. The calculated mass specific capacitance was 35F/g, the energy density was 43.7Wh/kg, and the maximum power density was 197.3 kW/kg, much larger than that of current activated carbon materials. The energy density (1 to 10 Wh/kg) and power density (2 to 10 kW/kg) of conventional supercapacitors. In addition, the compact supercapacitors also exhibit excellent frequency characteristics.
It is understood that the development of energy storage devices with long cycle life, high specific energy, and high power density has always been one of the hot topics for researchers in many fields. With the development of social science and technology, the requirements for power supply in many fields such as electric vehicles have been greatly improved. Although traditional capacitors have large power, they have limited energy density and cannot meet actual needs.
Supercapacitors, also known as electrochemical capacitors, have a performance intermediate between conventional capacitors and batteries, and have the characteristics of a high specific energy of a battery and a high specific power of a conventional capacitor, and a backup power source for a hybrid vehicle, a high-power radar, and a mobile phone. There are important applications for laptops and batteryless remote controls. With the development of portable electronic devices, the assembly of traditional supercapacitors has far from satisfying the current demand for the development of electronic devices, and supercapacitors are moving toward a light and simple direction.
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