Amorphous alloy electrodes for anodic oxidation of sulfite

Toshiyuki Mori, Eiji Akiyama, Hiroki Habazaki, Asahi Kawashima, Katsuhiko Asami, Koji Hashimoto

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


Amorphous Ni-valve metal alloys containing a few atomic per cent of platinum group elements were prepared by rapid quenching and were employed for electrochemical oxidation of sulfite in 0.075 M Na2B4O7 + 0.3 M H3BO3 + 1 M Na2SO3 at 30°C. Of the amorphous alloy electrodes containing ruthenium, rhodium, iridium or platinum, the platinum-containing electrodes showed the highest activity, which was almost the same as or even higher than that of the platinized platinum black electrode. Furthermore, the combined addition of platinum and ruthenium enhanced the catalytic activity. When ruthenium was substituted for part of the platinum, the maximum activity for amorphous Ni40NbxPt(1 - x)Ru alloys was observed at about 0.8 at.% Pt.

Original languageEnglish
Pages (from-to)1081-1084
Number of pages4
JournalMaterials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
Issue numberC
Publication statusPublished - 1994 May 15


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