Oxygen evolution reaction at Rt electrodes in alkaline solutions is characterized by two linear E-log i relationships. At low current densities (cd), the Tafel slope is close to 60 mV, whereas at bigb cd, it is close to 120 mV. The rates at bigb cd are strongly affected by the presence of an anodic
A study of ultraweak luminescence in evolution of oxygen at Pt electrodes
β Scribed by Zhenghao Wang; Xiaoqing Jin; Shengmin Cai; Yaning Liu; Akira Fujishima
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 273 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0013-4686
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β¦ Synopsis
Using a photon counter, the authors investigated the phenomena of ultraweak luminescence at Pt electrode in aqueous solutions containing no luminescer. It is proposed that the ultraweak photoemission comes from recombination between singlet oxygen and the study may provide a new method for investigating mechanism of oxygen evolution.
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Steady-state and potentioatatic transient H, evolution studies on Teflon bonded Pt black, platinired Pt and Pt foil electrodes in 5N H,SO,, 25Β°C showed that teflon bonded electrodes gave \* a higher performance than the other electrodes. The presence of the porous hydrophobic teflon network ensures
The oxygen evolution reaction (OER) in alkaline solution has been studied for various Ti supported IrO.sTio.,-,, X 2 Pt 0 anodes with 0 5 x 5 0.7 by impedance measurements (EIS) at potentials between -0.6 and l.OV vs. Hg/HgO (NMOE). The electrical parameters of the electrode solution interface were