Polyselenides on the route to electrodeposited selenium
- The electrochemical oxidation of aqueous solutions of hydrogen selenide (HSe − ) and of hydrogen polyselenide ions (HSe x− ) on glassy carbon electrodes at pH = 9.2 is reported. In both cases, the oxidation leads to deposits of selenium. The role of polyselenides as intermediates in the process is demonstrated. At 25 °C amorphous selenium is formed whereas at 70 °C crystalline selenium is deposited. The possible use of selenium films for technological purposes is discussed.
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- © 2019 Elsevier B.V. All rights reserved.
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