Fumed Silica-Based Single-Ion Nanocomposite Electrolyte for Lithium Batteries

Date Published
02/2015
Publication Type
Journal Article
Authors
DOI
10.1021/acsami.5b05419
Abstract

A composite lithium electrolyte composed of polyelectrolyte-grafted nanoparticles and polyethylene glycol dimethyl ether (PEGDME) is synthesized and characterized. Polyanions immobilized by the silica nanoparticles have reduced anion mobility. Composite nanoparticles grafted by poly(lithium 4-styrenesulfonate) only have moderate conductivity at 60 °C. Almost an order increase of the conductivity to ∼10-6 S/cm is achieved by co-polymerization of the poly(ethylene oxide) methacrylate with sodium 4-styrenesulfonate, which enhances dissociation between lithium cation and polyanion and facilitates lithium ion transfer from the inner part of the polyelectrolyte layer. This composite electrolyte has the potential to suppress lithium dendrite growth and enable the use of lithium metal anode in rechargeable batteries.

Journal
ACS Applied Materials & Interfaces
Volume
7
Year of Publication
2015
Issue
34
Pagination
19335 - 19341
ISSN Number
1944-8244
Short Title
ACS Appl. Mater. Interfaces
Refereed Designation
Refereed
Organizations
Research Areas
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