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Electrochemical study of PbSe using the carbon paste electrode technique

✍ Scribed by Eliane Gobert; Olivier Vittori

Publisher: Elsevier Science
Year: 1988
Tongue: English
Weight: 358 KB
Volume: 33
Category: Article
ISSN: 0013-4686
DOI: 10.1016/0013-4686(88)80010-0

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✦ Synopsis

The electrochemical behaviour of PbSe, synthetized by a gas-solid reaction between PbSO, and H,Se at 6OO"C, is investigated. Several preliminary experiments on lead and selenium are performed in order to observe the peak potentials of the oxidations (or reductions) occuring in the -1 to + 1 Vsce range in 0.1 M HCI or HCIO,. Successively Pb '+ PbSO,, H,SeOJ (soluble), Se02 and grey Se powder are tested. , After mechanical grinding, PbSe is introduced in the paste. A preliminary oxidation or a preliminary reduction ofthe solid allows the observation of several reduction or oxidation peaks due to the destruction of a part of solid PbSe (particle size between 0.5-5 pm).

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