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

Publication Type

Journal Article

Date Published

02/2015

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

Short Title

ACS Appl. Mater. Interfaces

Refereed Designation

Refereed

Pagination

19335 - 19341

Issue

34

ISSN

1944-8244
Research Areas