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Oxygen evolution on NiCo2−xRhxO4 spinel system

✍ Scribed by A.C. Tavares; L. Bochatay; M.I. Da Silva Pereira; F.M.A. Da Costa

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
546 KB
Volume
41
Category
Article
ISSN
0013-4686

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✦ Synopsis

The oxygen evolution process on NiCo,,Rh,O, (0 Q x Q 0.5) spine1 system was studied in 5 mol dm-a KOH aqueous solution at room temperature. The electrodes ekctrocatalytical activity was analysed in terms of Tafel slope., exchange current density and overpotential vahnxs. The experimental results show that the performance of the electrodes is significantly improved by the presence of rhodium, mainly due to the increase of surface and electroactive areas.

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✍ M.R.Gennero De Chialvo; A.C. Chialvo 📂 Article 📅 1993 🏛 Elsevier Science 🌐 English ⚖ 795 KB

Abssract-The oxygen evolution reaction on Ni,Co,,-, 1 04 oxide electrodes with x values between 0 .6 and 1 .3 in alkaline solution was studied . The characterization of these oxides was carried out by X-ray diffraction, ir, XPS and SEM . The results obtained demonstrate the presence of the spine) st