Anodization of Aluminum in Contact with Solid Electrolyte Containing Ionic Liquids

Kazuyuki TATEISHI, Akiko WAKI, Hiroyuki OGINO, Takahiro OHISHI, Mutsuaki MURAKAMI, Shinji FUJIMOTO
2017 Journal of The Surface Finishing Society of Japan  
イオン液体を含む固体電解質/アルミニウム界面での陽極酸化挙動 立石 和幸 a, b, * ,脇 晶子 a ,荻野 弘幸 a ,大石 孝洋 a ,村上 睦明 a ,藤本 慎司 b a ㈱カネカ (〒 530-8288 大阪府大阪市北区中之島 2-3-18) b 大阪大学 大学院工学研究科 (〒 565-0871 大阪府吹田市山田丘 2-1) The voltage endurance of anodic oxide films of aluminum formed in contact with a conductive polymer with ionic liquids (ILs) was characterized for application to aluminum solid electrolytic capacitors. The breakdown potential was evaluated by measuring the current under increasing applied voltage with a constantly ascending
more » ... e (100 mV/s) . Anodized films that were formed in contact with polyethylenedioxythiophene (PEDOT) containing or moistened with ILs exhibited superior voltage endurance to that found for films without ILs. Further measurements of breakdown potentials for aluminum with pre-formed oxide revealed various characteristics of anodized films formed in contact with solid electrolyte combined with ILs of various kinds. These results indicate PEDOT/ILs complex solid electrolyte as a promising mAterial for use in high voltage solid electrolytic capacitors.
doi:10.4139/sfj.68.106 fatcat:u4q2n24qbjcpblhvltkfha3j5y