In situ neutron diffraction study of the nickel oxihydroxide electrode upon discharge

✍ Scribed by F Bardé; M.R Palacin; Y Chabre; O Isnard; J.-M Tarascon

• Publisher: Elsevier Science
• Year: 2004
• Tongue: English
• Weight: 685 KB
• Volume: 350
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/j.physb.2004.03.113

✦ Synopsis

The redox discharge process of the nickel oxihydroxide electrode (NOE) were followed by in situ neutron diffraction with the aim of getting a deeper insight into the phases and mechanisms involved, paying special attention to the second plateau. A set of deuterated samples was prepared to be used as a reference for the interpretation of the in situ patterns. Neutron diffraction experiments indicate that redox process is the same over both the first and second plateaus and corresponds to a phase transformation over the main part of the oxidation/reduction range and hence indicates that this phenomenon should not be associated to a structural transformation.