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Carbonyl-Coordinating Alternative Polymer Electrolyte Host Materials for High-Performance Li Polymer Batteries and Beyond
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.
2017 (English)Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

Ever since the first reports on ion conduction in solvent-free polymers, polyethers have been at the center of attention. In materials such as poly(ethylene oxide), suitably spaced ether oxygens coordinate and solvate cations while the segmental motions of the polymer backbone facilitate ion transport. The same process can of course be achieved using alternative polymer host materials that coordinate using non-ether functional groups. Here, the carbonyl oxygens of polycarbonates and polyesters have proven to be particularly suitable for fast Li+ transport and circumventing well-known limitations of polyethers, such as low cation transference numbers and semicrystallinity [1], recently leading to the realization of solid-state Li polymer batteries that can be cycled at room temperature [2,3]. However, this class of alternative host materials is not limited to high-performance Li batteries. Additional applications beyond traditional Li-based energy storage include both Na batteries and light-emitting electrochemical cells (LECs). Utilizing materials incorporating carbonate moieties, we are able to show not only stable cycling of solid-state Na cells but also exceptionally-high-performance LECs [4]. In this talk I will account for the recent research progress in both high-performance Li batteries and these new fields of application, highlighting the emerging possibilities enabled by non-polyether polymer electrolytes.

Keywords: Polymer electrolytes, Polycarbonates, Polyesters

 

References

[1] B. Sun, J. Mindemark et al., Phys. Chem. Chem. Phys. 18, 9504-9513 (2016).

[2] J. Mindemark, B. Sun, E. Törmä, and D. Brandell, J. Power Sources 298, 166-170 (2015).

[3] K. Kimura, M. Yajima, and Y. Tominaga, Electrochem. Commun. 66, 46-48 (2016).

[4] J. Mindemark et al., Chem. Mater. 28, 2618-2623 (2016).

Place, publisher, year, edition, pages
2017.
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:uu:diva-336934OAI: oai:DiVA.org:uu-336934DiVA: diva2:1167578
Conference
6th International Conference on Functional Electroceramics and polymers (ICEP-2017)
Available from: 2017-12-19 Created: 2017-12-19 Last updated: 2017-12-19

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