Abstract
Stationary polarization curves of oxygen evolution were measured on various mixed oxide electrodes of the spinel and perovskite group and on Raney nickel electrodes made by the technology of the Nuclear Research Center Juelich (KFA) in the current density range 0.05–1.0 Acm −2 in 10 M KOH at 100°C and under atmospheric pressure. The mixed oxide electrodes were either prepared from ready-made mixed oxides or produced in the form of thin coatings by the thermal decomposition of the corresponding nitrate solutions on various Ni bases. The greatest activity was shown with the Raney nickel anodes made by KFA technology, the oxygen overvoltage at most of the mixed oxide electrodes on a compact Ni base was approx. 40–80 mV higher. This difference can be reduced to approx. 10–40 mV by using a sintered Ni base (measured in the course of 240 h to date). It was established that the thermal decomposition of (Sr + Co) nitrates at 500–550°C did not lead to a perovskite structure, nevertheless, the mixed oxide coating formed was just as active as other effective mixed oxide coatings of the spinel or perovskite group.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
