Electrochemistry
Online ISSN : 2186-2451
Print ISSN : 1344-3542
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76 巻 , 3 号
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  • Tetsuya OSAKA, Satoshi WAKATSUKI, Toyoto MASUDA, Masahiro YOSHINO, Nor ...
    76 巻 (2008) 3 号 p. 191-196
    公開日: 2012/03/22
    ジャーナル オープンアクセス
    A wet process for forming an adhesive Cu layer on polyimide (PI) film was developed. In this process, the surface of the PI film is pretreated in plasma, followed by the formation of a ligand-bearing organic layer of 3-aminopropyltriethoxy silane (APTES) molecules. After catalyzation with a solution containing Pd ions, thin layers of NiB as the underlayer and that of Cu as the conductive layer are deposited by electroless depositions, and then a 10 µm thick Cu layer is electrodeposited. The peel strength of the specimen prepared by this method was found to depend on the morphology of the NiB underlayer. A continuous NiB layer functions as a barrier layer that prevents Cu from contacting the PI film. In the presence of this efficient barrier layer, the peel strength was found to improve after annealing at 150°C.
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  • Masahiko KIRIU, Koji FUSHIMI, Hidetaka KONNO, Hiroki HABAZAKI
    76 巻 (2008) 3 号 p. 197-202
    公開日: 2012/03/22
    ジャーナル オープンアクセス
    Nanocarbons with brush-type morphology have been prepared by liquid phase carbonization of poly(acrylamide) (PAA) or poly(vinylchloride) (PVC) in pores of template. The template used is dc etched aluminum foil that is further anodized in sulfuric acid electrolyte. The nanocarbons derived from PAA contain nitrogen, whose content decreases with increasing heat treatment temperature. At each heat treatment temperature, the specific surface area as well as pore structure is similar for both the nanocarbons derived from PAA and PVC. Nevertheless, the markedly large electrochemical capacitance, measured in 1 mol dm−3 sulphuric acid, is obtained for the PAA-derived nanocarbons, compared with that from PVC, due to pseudocapacitance arising from nitrogen species in the former nanocarbons. Despite the specific surface area of less than 250 m2 g−1, the PAA-derived nanocarbons reveal the capacitance as large as ∼130 F g−1. The capacitance per specific surface area is found to increase almost linearly with the content of nitrogen. It is also found that the capacitance per specific surface area of the nanocarbons with the brush-type morphology is larger than that of the carbon nanofilaments prepared similarly using a template of porous anodic alumina on plain aluminum foil.
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電気化学:測定と解析のてびき
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