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Gel electrolytes based on lithium modified silica nano-particles

journal contribution
posted on 01.08.2007, 00:00 authored by J Sun, Paul Bayley, D MacFarlane, Maria ForsythMaria Forsyth
In this work lithium modified silica (Li-SiO2) nano-particles were synthesized and used as a single ion lithium conductor source in gel electrolytes. It was found that Li-SiO2 exhibited good compatibility with DMSO, DMA/EC (a mixture of N,N-dimethyl acetamide and ethylene carbonate) and the ionic liquid, N-methyl-N-propyl pyrrolidinium bis(trifluoromethylsulfonyl) amide ([C3mpyr][NTf2]). Several gel electrolytes based on Li-SiO2 were obtained. These gel electrolytes were investigated by DSC, solid state NMR, conductivity measurements and cyclic voltammetry. Conductivities as high as 10−3 S/cm at room temperature were observed in these nano-particle gel electrolytes. The results of electrochemical tests showed that some of these materials were promising for using as lithium conductive electrolytes in electrochemical devices, with high lithium cycling efficiency evident.

History

Journal

Electrochimica acta

Volume

52

Issue

24

Pagination

7083 - 7090

Publisher

Elsevier Science Pub. Co.

Location

New York, N.Y.

ISSN

0013-4686

eISSN

1873-3859

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

2007, Elsevier Ltd.