ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
In order to improve the durability of Pt coated Ti electrodes as an anode of the sulfuricacid system electrolysis, tantalum oxide (Ta2O5) additions have been used widely. However that isnot enough for uses under severe conditions. In this study,[removed info]boric acid (H3BO3) was added into the Ptcoating during manufacturing process of Ti/Pt-coated electrodes, and the (Pt + B2O3)/Ti electrodeswere obtained. The effect of H3BO3 addition on the microstructure, surface area, and lifetime of (Pt+ B2O3)/Ti electrodes was also investigated in detail. Commercially available titanium plates (10[removed info]10[removed info]0.5mm) were employed for prepare Ti/ (Pt + B2O3) electrodes, where it was confirmed by XRDthat B2O3 formed by heating the boric acid was amorphous in the temperature range of 250 to550[removed info]. The coating solution of 2 μl of H2PtCl6[removed info]6H2O (Pt:50 g/l) dissolved in butanol and 5~20mass% H3BO3 mixture was spread over the etched Ti plates. After drying at 70[removed info] for 30 min, thesubstances were heated at 250 to 550[removed info] for 10 min. The lifetime of the electrodes was examined bya direct current of 1 A using Pt plate as the counter electrode in 1 M H2SO4 solution at 40[removed info]. Theend of life was determined as the time when the cell voltage changed 2 times of the beginning
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/51/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.317-318.393.pdf
Permalink