Title:
ELECTRODE FOR GENERATING OXYGEN AND PRODUCTION THEREOF
Document Type and Number:
Japanese Patent JPH03193889
Kind Code:
A
Abstract:
PURPOSE:To obtain an electrode for generating oxygen having superior durability and low oxygen overvoltage by forming a lower layer consisting of iridium oxide and tantalum oxide on an electrically conductive substrate and an upper layer consisting of iridium oxide and tantalum oxide in a molar ratio different from that in the lower layer on the lower layer. CONSTITUTION:A lower layer consisting of iridium oxide and tantalum oxide is formed on an electrically conductive substrate of a metal such as Ti, Tl or Zr or an alloy of such metals. An upper layer consisting of iridium oxide and tantalum oxide in a molar ratio different from that in the lower layer is then formed on the lower layer to obtain an electrode for generating oxygen. The lower layer contains 40-79.9mol% Ir and 60.1mol% Tl (expressed in terms of metals). The upper layer contains 80-99.9mol% Ir and 20.1mol% Tl. The electrode for generating oxygen is suitable for use in a reaction for generating oxygen on the anode by electrolyzing a desired aq. soln.
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Inventors:
KAWASHIMA YUKIO
OE KAZUHIDE
NAKADA HIROYUKI
OE KAZUHIDE
NAKADA HIROYUKI
Application Number:
JP33137689A
Publication Date:
August 23, 1991
Filing Date:
December 22, 1989
Export Citation:
Assignee:
TDK CORP
International Classes:
C23C18/12; C23C28/04; C25B11/04; C25B11/06; C25B11/10; C25D17/10; (IPC1-7): C23C18/12; C23C28/04; C25B11/04; C25B11/06; C25B11/10
Attorney, Agent or Firm:
Akira Agata (2 outside)