✦ LIBER ✦

Photoelectrochemical properties of SrFeNb oxides having perovskite structure

✍ Scribed by Nobuyuki Hatanaka; Tetsuhiko Kobayashi; Hiroshi Yoneyama; Hideo Tamura

Book ID: 103066354
Publisher: Elsevier Science
Year: 1982
Tongue: English
Weight: 442 KB
Volume: 27
Category: Article
ISSN: 0013-4686
DOI: 10.1016/0013-4686(82)80121-7

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✦ Synopsis

Photoelectrochemical properties of Sr,FeNbOe, Sr,,, FeI,lNbO,_,and SrsFeNb,O, havingthe oerovskite structures were investiaated usine. sintered &lets to determine the enerav aan and the flat-band potential and to evaluate the ele&ochem&l stability against the anodic decomJ&&. The energy gap determined was 1.9eV for Sr,FeNblO, and 2.3eV for both Sr2FeNbOs and Srl,9Fe,.,Nb0,_,. The flatband potentiai of these materials was found to be cca. 0.1 V positive of the reversible hydrogen electrode in measured solutions. The onset potential of anodic photocurrents did not coincide with the tit-band potential, however, being more positive than that and varied with the kind of redox electrolyte chosen. Probable causes for this phenomenon are briefly discussed.

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