Nanoporous hybrid electrolytes

Jennifer L. Schaefer, Surya S. Moganty, Dennis A. Yanga, Lynden A. Archer

Research output: Contribution to journalArticlepeer-review

56 Scopus citations

Abstract

Oligomer-suspended SiO2-polyethylene glycol nanoparticles are studied as porous media electrolytes. At SiO2 volume fractions, , bracketing a critical value y ≈ 0.29, the suspensions jam and their mechanical modulus increase by more than seven orders. For >y, the mean pore diameter is close to the anion size, yet the ionic conductivity remains surprisingly high and can be understood, at all , 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. © 2010 The Royal Society of Chemistry.
Original languageEnglish (US)
Pages (from-to)10094
JournalJournal of Materials Chemistry
Volume21
Issue number27
DOIs
StatePublished - 2011
Externally publishedYes

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