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Issue 27, 2011
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Nanoporous hybrid electrolytes

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Abstract

Oligomer-suspended SiO2–polyethylene glycol nanoparticles are studied as porous media electrolytes. At SiO2 volume fractions, ϕ, bracketing a critical value ϕy ≈ 0.29, the suspensions jam and their mechanical modulus increase by more than seven orders. For ϕ>ϕy, the mean pore diameter is close to the anion size, yet the ionic conductivity remains surprisingly high and can be understood, at all ϕ, using a simple effective medium model proposed by Maxwell. SiO2–polyethylene glycol hybrid electrolytes are also reported to manifest attractive electrochemical stability windows (0.3–6.3 V) and to reach a steady-state interfacial impedance when in contact with metallic lithium.

Graphical abstract: Nanoporous hybrid electrolytes

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Article information


Submitted
01 Dec 2010
Accepted
10 Jan 2011
First published
15 Feb 2011

J. Mater. Chem., 2011,21, 10094-10101
Article type
Paper

Nanoporous hybrid electrolytes

J. L. Schaefer, S. S. Moganty, D. A. Yanga and L. A. Archer, J. Mater. Chem., 2011, 21, 10094
DOI: 10.1039/C0JM04171H

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