Polymer electrolytes for sodium-ion batteries

Publication Name

Energy Storage Materials

Abstract

Sodium-ion batteries are seeing a surge in interest as a potential complementary energy storage technology in light of skyrocketing demand for lithium-ion batteries. One of the frontiers of improving sodium-ion battery competitiveness is replacing liquid electrolytes with polymer electrolytes, which contain no free-flowing solvent, to increase safety and reduce cost. Their development may one day make viable sodium-metal batteries, which would have considerable advantages in energy density. This review provides an overview of the current field of both solid-polymer and gel-polymer electrolytes for sodium-ion batteries, with a focus in the key performance parameters used to assess them. In particular, their targeted manipulation and significance for practical use are discussed. A major theme is also the interdependence of many electrochemical and mechanical properties. In addition, a quantitative comparison of hitherto reported values for these parameters across various polymer classes is undertaken for the first time.

Open Access Status

This publication is not available as open access

Volume

36

First Page

10

Last Page

30

Funding Sponsor

Australian Renewable Energy Agency

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Link to publisher version (DOI)

http://dx.doi.org/10.1016/j.ensm.2020.11.030