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Sol-gel preparation...
Sol-gel preparation of a di-ureasil electrolyte doped with lithium perchlorate
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- Silva, M. M. (author)
- Universidade do Minho,University of Minho
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- Nunes, S. C. (author)
- Universidade de Tras-os-Montes e Alto Douro,University of Trás-os-Montes and Alto Douro
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- Barbosa, P. C. (author)
- Universidade do Minho,University of Minho
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- Evans, A. (author)
- Universidade do Minho,University of Minho
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- Bermudez, V. D. (author)
- Universidade de Tras-os-Montes e Alto Douro,University of Trás-os-Montes and Alto Douro
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- Smith, M. J. (author)
- Universidade do Minho,University of Minho
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- Ostrovskii, Denis, 1967 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- Elsevier BV, 2006
- 2006
- English.
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In: Electrochimica Acta. - : Elsevier BV. - 0013-4686. ; 52:4, s. 1542-1548
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Abstract
Subject headings
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- Solid polymer electrolytes (SPEs) synthesized by the sol-gel process and designated as di-ureasils have been prepared through the incorporation of lithium perchlorate, LiClO4, into the d-U(2000) organic-inorganic hybrid network. Electrolytes with lithium salt compositions of n (where n indicates the number of oxyethylene units per Li+ ion) between ∞ and 0.5 were characterized by conductivity measurements, cyclic voltammetry at a gold microelectrode, thermal analysis and Fourier transform Raman (FT-Raman) spectroscopy. The conductivity results obtained suggest that this system offers a quite significant improvement over previously characterized analogues doped with lithium triflate [S.C. Nunes, V. de Zea Bermudez, D. Ostrovskii, M.M. Silva, S. Barros, M.J. Smith, R.A. Sá Ferreira, L.D. Carlos, J. Rocha, E. Morales, J. Electrochem. Soc. 152 (2) (2005), A429]. "Free" perchlorate ions, detected in all the samples examined, are identified as the main charge carriers in the sample that yields the highest room temperature conductivity (n = 20). In the di-ureasils with n ≤ 10 ionic association is favoured and the ionic conductivity drops.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Annan teknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Other Engineering and Technologies (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
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