Principles of paper lithium battery technology

　　Overview

　　The paper lithium battery is coated with a thin -film carbon nanotuba on the surface of the lithium compound nanotuba contained in the surface. These thin double -layer thin films are fixed on both sides of ordinary paper. Paper is not only a supporting structure of the battery, but also a role of separating electrodes; lithium is used as an electrode, and the carbon nanopotranskin layer is a current collection tube.

　　Technical comparison

　　Traditional lithium -ion batteries are used as electrodes with lithium -based powder, and paper lithium batteries are used as electrodes with carbon nanotubes (CNT) ink. The previous layer of PVDF (polytarinylinylinylin) coating enhanced the adhesion between CNT ink and paper base

　　Although the paper lithium battery is not mature, it may not be not the most ideal accessories of all mobile devices, they may be very useful in the future, such as intelligent packaging, electronic label applications, and electronic paper products.

　　Paper Lithium Battery Study

　　Scientists at the University of Arizona have developed a paper-based lithium-ion battery that can be performed multiple times or folded into Miura-ORI type (similar to the map folding method). Since the folding becomes smaller, the surface energy density and capacitance can increase by 14 times. Essence This folding paper -based battery is flexible and low in cost. It can be manufactured by the roller shaft. It is expected to further develop a high -performance battery with a multi -purpose.

　　The researchers conducted a folding experiment on the battery, first simply folded, and then folded with a more complex Miura-Ori. After simple folding, twice, and three times, the surface energy density and capacitors are increased by 1.9, 4.7, and 10.6 times compared to unpacking plane batteries; Miura-Ori folding type efficiency is higher: a piece of 6 cm × 7 cm paper paper After the battery is folded to 25 layers, the overall area is only 1.68 square centimeters, while the surface energy density and capacitors have increased to 14 times.

　　Compared to the plane battery, certain properties of the battery folded by the MIURA-Ori method are slightly reduced, including the reduction of discharge capacity and capacitance. Researchers believe that these losses may be due to the layering of vertical folds, because these batteries contain 16 top points. To prevent the battery, researchers use a flexible insulating film between the layers and the layer: the polytarphenylene-C. The results of this research make people see the potential of energy density and capacity of lithium -ion battery unit area with the use of folding method for the first time.

　　With the development of the geometric folding algorithm, computer tools and robots, a more complicated folding type will develop large -scale manufacturing and use it for commercial use

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