This paper reviews work on the electrochemical generation of ozone from the original studies by Schönbein in the early 1800's to the present day, and is intended for specialists and non-specialists in the field of electrochemistry. The experimental techniques employed to study the mechanism of electrochemical ozone generation are described, as is the most commonly quoted mechanism and the experimental evidence for the mechanism is summarised and discussed. The types of electrochemical cells employed are described, and the effect of: temperature, anode type and composition, current density and electrolyte composition & pH are discussed.

http://eprint.ncl.ac.uk The effect of Ni and Sb oxide precursors, and of Ni composition, synthesis conditions and operating parameters on the activity, selectivity and durability of Sb-doped SnO 2 anodes modified with Ni

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The direct oxidation reaction of glycerol (GOR) was studied and compared to that of methanol (MOR) and ethanol (EOR) in both acid and alkaline media using commercial Pt/C, PtRu/C, Pd/C and PdNi/C electrocatalysts. The results show that GOR and MOR in alkaline media is better than that in acid media, in contrast to ethanol. Among the studied catalysts, PtRu/C showed the lowest onset potential and the highest catalytic activity for GOR and MOR in alkaline media, providing the lowest onset potential and a Tafel slope (TS) of 63 mV dec À 1 , which could be attributed to the high surface poisoning tolerance. In fuel cells, the open circuit voltage of alkaline anion exchange membrane fuel cells (AEMFCs) was higher than that of the proton exchange membrane fuel cells (PEMFCs). In the kinetic region (up to 20 mA cm À 2 ), the power density and cell performance were higher for AEMFCs than those of PEMFCs. However, the power density peaks were higher for PEMFCs than those for AEMFCs. Both the cell performance and the power density increased with increasing temperature. Regardless of the temperature and the media, glycerol crossover is comparable to that of ethanol but much less than that of methanol.