Nanoporous hybrid electrolytes
Oligomer-suspended SiO(2)-polyethylene glycol nanoparticles are studied as porous media electrolytes. At SiO(2) volume fractions, phi, bracketing a critical value phi(y) approximate to 0.29, the suspensions jam and their mechanical modulus increase by more than seven orders. For phi > phi(y), the mean pore diameter is close to the anion size, yet the ionic conductivity remains surprisingly high and can be understood, at all phi, using a simple effective medium model proposed by Maxwell. SiO(2)-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.
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| Main Authors: | , , , |
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| Format: | article biblioteca |
| Language: | en_US |
| Published: |
Royal Society of Chemistry
2011-02-15
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| Subjects: | ROYAL SOC CHEMISTRY, THOMAS GRAHAM HOUSE, EFFECTIVE CONDUCTIVITY, ELECTRICAL-PROPERTIES, IONIC-LIQUID, PERFORMANCE, COPOLYMER, CATHODE, CELL, |
| Online Access: | https://hdl.handle.net/1813/30460 |
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