6 March 1989 The Potential Waveform In The Optical Switching Of Hydrated Nickel Oxide
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Proceedings Volume 1016, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion VII; (1989) https://doi.org/10.1117/12.949929
Event: 1988 International Congress on Optical Science and Engineering, 1988, Hamburg, Germany
Abstract
In this work it has been analyzed the transient of the current flowing in an electrochemical cell in which the working electrode is constituted by a hydrated nickel oxide layer. The analysis of the current, utilizing a model for the diffusion mechanism of protons into the electrochromic material, allows to determine the diffusion coefficient for the oxidation and reduction processes. It ha5been observed that the diffusion coefficient for the bleaching process is larger than that one of the oxidation process. This fact could explain why the transition to the coloured phase occurs more rapidly than the inverse transition and with an apparently more simple function. Attempts have been made to put in correlation the eventual formation of metastable cristallographyc phases, observed by the X-rays diffraction technique, submitting the sample to a periodic potential, with a square waveform, for several cycles.
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Agostino Pennisi, Agostino Pennisi, Francesca Simone, Francesca Simone, } "The Potential Waveform In The Optical Switching Of Hydrated Nickel Oxide", Proc. SPIE 1016, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion VII, (6 March 1989); doi: 10.1117/12.949929; https://doi.org/10.1117/12.949929
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