Improvement of charge/discharge properties of oligoether electrolytes by zwitterions with an attached cyano group for use in lithium-ion secondary batteries

Yamaguchi, Seitaro, Yoshizawa-Fujita, Masahiro, Zhu, Haijin, Forsyth, Maria, Takeoka, Yuko and Rikukawa, Masahiro 2015, Improvement of charge/discharge properties of oligoether electrolytes by zwitterions with an attached cyano group for use in lithium-ion secondary batteries, Electrochimica acta, vol. 186, pp. 471-477, doi: 10.1016/j.electacta.2015.11.018.

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Title Improvement of charge/discharge properties of oligoether electrolytes by zwitterions with an attached cyano group for use in lithium-ion secondary batteries
Author(s) Yamaguchi, Seitaro
Yoshizawa-Fujita, Masahiro
Zhu, HaijinORCID iD for Zhu, Haijin orcid.org/0000-0001-6352-7633
Forsyth, MariaORCID iD for Forsyth, Maria orcid.org/0000-0002-4273-8105
Takeoka, Yuko
Rikukawa, Masahiro
Journal name Electrochimica acta
Volume number 186
Start page 471
End page 477
Total pages 7
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2015-12-20
ISSN 0013-4686
Keyword(s) Zwitterion
Cyano-group
Polymer electrolyte
Lithium-ion battery
Ionic liquid
Summary Zwitterions with a cyano group on the side chain (CZ) were synthesized. Although the addition of CZ caused a slightly negative effect on viscosity, ionic conductivity, limiting current density, and lithium transference number, the oxidation limit of PEGDME/lithium bis(trifluoromethylsulfonyl)amide (LiTFSA) composites was improved to over 5 V. For charge/discharge testing using Li|electrolyte|LiCoO2 cells, the cycle stability of PEGDME/LiTFSA with CZ in the voltage range of 3.0-4.6 V was much higher than that of PEGDME/LiTFSA. Incorporating a small mole fraction of CZ into PEGDME-based electrolytes prevented an increase in the interface resistance between the electrolyte and cathode with increasing numbers of the cycle.
Language eng
DOI 10.1016/j.electacta.2015.11.018
Field of Research 03 Chemical Sciences
09 Engineering
02 Physical Sciences
091205 Functional Materials
030304 Physical Chemistry of Materials
Socio Economic Objective 850602 Energy Storage (excl. Hydrogen)
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30079840

Document type: Journal Article
Collection: Institute for Frontier Materials
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