A "paper" with a length and width of 15 cm and a thickness of less than 1 mm can reach a capacitance of 1 farad, which is comparable to the current supercapacitors on the market. This is the new material developed by the researchers of Organic Electron Laboratory of Linköping University in Sweden and colleagues in Denmark and the United States - the "energy paper" with excellent energy storage capacity. It is made of nano-cellulose and conductive polymer and can be recharged repeatedly. Hundreds of times, it only takes a few seconds per charge. According to the Daily Science Network, the appearance and feel of this “energy paper†is a bit like a plastic material. Researchers even used it to fold a swan and prove that it has a certain degree of strength. To develop this new material, they used high-pressure water to separate the cellulose into fibers with a diameter of only 20 nanometers. When the nanocellulose and a charged polymer were placed in an aqueous solution, the charged polymer formed a very thin coating. Cover cellulose. These nanocelluloses are entangled together, and the liquid in the void can act as an electrolyte. The new material also sets a new record in conducting both ion and electron conductivity, which is why it has excellent energy storage properties. Unlike batteries and capacitors currently on the market, the raw materials used in "Energy Paper" are very simple, do not require hazardous chemicals or heavy metals, and are light-weight and waterproof. "Energy Paper" is also like ordinary paper and requires dehydration during the manufacturing process. The current challenge is to develop an industrial-scale process to complete the dehydration process. The research results have been published in the "Advanced Science" magazine. The Swedish Strategic Research Foundation will allocate funds for this research and will support them in continuing to develop paper machines that can produce this “energy paperâ€. (Reporter Chen Dan)
Yangzhou
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