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Scientists working on paper li-ion batteries

Posted on Saturday, September 25 2010 @ 05:35:36 CEST by

Researchers at Stanford University have fabricated ultrathin rechargeable lithium-ion batteries on a single sheet of paper. These batteries are bendable and could be used for smart packaging and radio-frequency sensing applications.
Ultrathin rechargeable lithium-ion batteries have been fabricated on a single sheet of paper, resulting in highly flexible and lightweight portable power sources, according to a study published in ACS Nano by Stanford University researchers (DOI: 10.1021/nn1018158). The advance may provide an integrated power solution for the developing field of paper-based electronics and lead to applications in “smart” packaging and radio-frequency sensing.

To make the batteries, Stanford materials scientists Liangbing Hu, Hui Wu, Yi Cui, and coworkers coated a solid support with a thin film of carbon nanotubes and deposited a film of a metal-containing lithium compound on top of the nanotubes. Then the team deposited the double-layer films on both sides of ordinary paper. In that design, the lithium layers function as battery electrodes and the nanotube films serve as current collectors. The paper is the electrode separator and also serves as a mechanical support.
More info at C&EN



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