Studies on oxygen reduction in molten NaOH

Hidetaka Hayashi, Shiro Yoshizawa, Yasuhiko Ito

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


Oxygen reduction in molten NaOH at 623 K has been studied by the use of an Ni rotating disk electrode and a porous O2 gas electrode. It was clarified that the diffusing species to the electrode surface is molecular oxygen itself, and not an oxygen-containing anion, such as O2-2, by limiting current measurements. Kinetic studies show that the following reaction mechanism is more probable: {A figure is presented} where the latter is rate determining. Since H2O transport to the electrode surface is rate determining, pO2- control is especially important, taking into account the following equilibrium; {A figure is presented}.

Original languageEnglish
Pages (from-to)149-153
Number of pages5
JournalElectrochimica Acta
Issue number2
Publication statusPublished - Feb 1983

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry


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