A physical organogel electrolyte: characterized by in situ thermo-irreversible gelation and single-ion-predominent conduction

Content Provider	Semantic Scholar
Author	Kim, Young-Soo Cho, Yoon-Gyo Odkhuu, Dorj Park, Noejung Song, Hyun-Kon
Copyright Year	2013
Abstract	Electrolytes are characterized by their ionic conductivity (σ(i)). It is desirable that overall σ(i) results from the dominant contribution of the ions of interest (e.g. Li(+) in lithium ion batteries or LIB). However, high values of cationic transference number (t+) achieved by solid or gel electrolytes have resulted in low σ(i) leading to inferior cell performances. Here we present an organogel polymer electrolyte characterized by a high liquid-electrolyte-level σ(i) (~10(1) mS cm(-1)) with high t+ of Li(+) (>0.8) for LIB. A conventional liquid electrolyte in presence of a cyano resin was physically and irreversibly gelated at 60°C without any initiators and crosslinkers, showing the behavior of lower critical solution temperature. During gelation, σ(i) of the electrolyte followed a typical Arrhenius-type temperature dependency, even if its viscosity increased dramatically with temperature. Based on the Li(+)-driven ion conduction, LIB using the organogel electrolyte delivered significantly enhanced cyclability and thermal stability.
File Format	PDF HTM / HTML
DOI	10.1038/srep01917
PubMed reference number	23715177
Journal	Medline
Volume Number	3
Alternate Webpage(s)	http://scholarworks.unist.ac.kr/bitstream/201301/2809/1/84878743616.pdf
Alternate Webpage(s)	https://doi.org/10.1038/srep01917
Journal	Scientific reports
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article