Implications of the unusual redox behavior exhibited by the teteropolyanion [EuP{sub 5}W{sub 30}O{sub 110}]{sup 12-}
Conference
·
OSTI ID:441117
We report on the novel electrochemical behavior of the heteropolyanion [EuP{sub 5}W{sub 30}O{sub 110}]{sup -12}, with emphasis on the Eu valence in both the oxidized and reduced forms. In aqueous electrolytes, the P-W-O framework is electroactive and can reversibly accept up to 10 electrons before the potential becomes reducing enough for H{sub 2} evolution. Eu L{sub 3}-edge x-ray absorption near edge structure (XANES) results demonstrate that Eu is also electroactive under the same conditions. Implications of this work are discussed re long-standing questions about intermediate- valent materials.
- Research Organization:
- Argonne National Lab., IL (United States). Chemistry Div.
- Sponsoring Organization:
- USDOE Office of Energy Research, Washington, DC (United States)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 441117
- Report Number(s):
- ANL/CHM/CP--89931; CONF-960796--8; ON: DE97002000
- Country of Publication:
- United States
- Language:
- English
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· J. Am. Chem. Soc.
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OSTI ID:949672