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Identification of Al–dtpa–PO 4 Ternary Complex Inhibiting Hydration of Alumina Electrodes in Electrolytic Capacitors
Author(s) -
Ozawa Masashi,
Kawayauchi Naoto,
Mishima Yoko,
Sugiue Ayako,
Ueno Mizuho,
Isoda Kyosuke,
Sakakura Masao,
Sugaya Tomoaki,
Tadokoro Makoto
Publication year - 2014
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201300098
Subject(s) - ternary operation , electrolyte , electrode , capacitor , electrolytic capacitor , phosphate , ion , materials science , computer science , chemistry , chemical engineering , voltage , electrical engineering , engineering , organic chemistry , programming language
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.