New battery thin as paper bends

New battery thin as paper bends

R&D personnel are demonstrating new types of batteries. Xinhua News Agency

Smartphones have made considerable progress in recent years, but battery technology has developed relatively slowly. Recently, Jiangxi University of Science and Technology has developed a new type of foldable lithium battery, light and thin like paper, can be bent freely, and its performance is better than current ordinary lithium-ion batteries.

Hu Jingwei, a key member of the R&D team of Jiangxi Provincial Key Laboratory of Power Battery and Materials, of Jiangxi University of Science and Technology, said that the electrode material of common batteries is attached to the metal sheet. Even if it is thin, the electrode material is easily detached and formed with a carbon nanotube. The macro film replaces the traditional metal sheet and solves this problem. Under the same conditions, the specific capacity and energy density of this battery are higher than traditional commercial lithium-ion batteries. The battery can still work normally after five consecutive folds.

Hu Jingwei said: "This battery is mainly in line with the development of wearable devices, wearable devices to be subject to a certain degree of bending or even folding, requiring its battery also has bending and folding capabilities. We designed this battery to maximize It meets the requirement of wearable devices for battery flexibility. In addition, since lightweight carbon nanotube film replaces metal foil material, the energy density of this battery has been significantly improved, which can improve the shortcomings of insufficient wearable device life." Wen Meiliang)

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