Journal
ELECTROCHIMICA ACTA
Volume 241, Issue -, Pages 526-534Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2017.04.132
Keywords
polymer electrolytes; polyurethanes; single ion conductors; lithium metal batteries
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Funding
- Russian Foundation for Basic Research [14-29- 04039_ ofi_ m]
- European Commission [318873]
- European Commission through project RENAISSANCE [ITN 289347]
- Spanish Ministry 'Ministerio de Economia y Competitividad [CTQ2014-53458-P.D.M]
- Gobierno Vasco/Eusko Jaurlaritza [IT 999-16]
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Single-ion polymer electrolytes are expected to play an important role in the development of nextgeneration lithium metal batteries. In this paper, the synthesis and characterization of single-ion conducting polyurethanes (SIPUs) based on PEG and a specifically designed ionic liquid monomer (bisMPTFSI) is presented. Exploiting the flexible chemistry of polyurethanes, it was possible to tailor the composition and chemical structure of SIPE, obtaining both segmented and crosslinked lithium ionconductive (sigma= 10 (8) -10 (4) S cm (1)) and free-standing films with the lithium transference number close to unity. Finally, the performances of gel polymer electrolytes based on SIPUs for lithium metal batteries operating at room temperature were investigated (80 cycles at C/10 with nearly 100% efficiency). To the best of our knowledge, these SIPUs represent one of the first examples of polyurethane-based poly(ionic liquid) s for application in the field of battery science. (C) 2017 Elsevier Ltd. All rights reserved.
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