Identification of Al–dtpa–PO4 Ternary Complex Inhibiting Hydration of Alumina Electrodes in Electrolytic Capacitors

A novel aluminum complex that inhibits hydration‐related deterioration of the alumina electrode in electrolytic capacitors has been isolated. The complex forms ternary complexes with phosphate ions and protects the electrode surface by forming a phosphate‐ion monolayer. The ternary complex is essent...

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Bibliographic Details
Published inChemElectroChem Vol. 1; no. 2; pp. 354 - 357
Main Authors Ozawa, Masashi, Kawayauchi, Naoto, Mishima, Yoko, Sugiue, Ayako, Ueno, Mizuho, Isoda, Kyosuke, Sakakura, Masao, Sugaya, Tomoaki, Tadokoro, Makoto
Format Journal Article
LanguageEnglish
Published Weinheim WILEY‐VCH Verlag 11.02.2014
John Wiley & Sons, Inc
Subjects
aluminum complex
capacitors
phosphate
polymers
ternary complexes
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Summary:A novel aluminum complex that inhibits hydration‐related deterioration of the alumina electrode in electrolytic capacitors has been isolated. The complex forms ternary complexes with phosphate ions and protects the electrode surface by forming a phosphate‐ion monolayer. The ternary complex is essential to maintain a constant phosphate‐ion concentration in the capacitor electrolytic solution, to protect the electrode for >10 000 h at 105 °C.
ISSN:2196-0216
2196-0216
DOI:10.1002/celc.201300098