泳動電着法を用いる炭素材料膜の作製と応用

概要

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We have ever proposed to prepare the highly functional material films by using an electrophoretic deposition (EPD) method. In this review, we have utilized the EPD process to fabricate the binder-free carbon negative electrodes for lithium ion secondary batteries; these electrodes were fabricated without mixing a binder. Powdered active materials are usually used for the electrode of lithium ion secondary batteries. The binder is used to form it as an electrode but is not concerned in charge-discharge reaction directly. Therefore, if it is not used for the electrode fabrication, it leads to high energy density of a battery. Artificial graphite powders could be deposited on the anode substrate by the EPD method. Smooth and uniform deposit could be obtained. It was shown clearly that the binder-free artificial graphite film functioned as the negative electrode for lithium ion secondary batteries. In addition, a co-deposited film consisting of activated carbon and Ketjenblack powder particles was investigated as the electrode for capacitor cells. It was found that the co-deposited film fabricated by adding polyvinylidine difluoride as a binder to the EPD bath operated successfully as it. From these results, it is concluded that the EPD method can be applied as the carbon electrode fabrication process.
社団法人粉体粉末冶金協会の論文
2008-01-15