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Park, Noejung
Computational Physics & Electronic Structure Lab
Research Interests
  • Electronic structure calculation, computational physics, computational material science

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

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Title
A physical organogel electrolyte: Characterized by in situ thermo-irreversible gelation and single-ion-predominent conduction
Author
Kim, Young-SooCho, Yoon-GyoOdkhuu, DorjPark, NoejungSong, Hyun-Kon
Keywords
TOTAL-ENERGY CALCULATIONS; WAVE BASIS-SET; POLYMER ELECTROLYTES; GEL ELECTROLYTES; LITHIUM; BATTERIES; KINETICS; LIQUID; NUMBER
Issue Date
201305
Publisher
NATURE PUBLISHING GROUP
Citation
SCIENTIFIC REPORTS, v.3, no., pp.1 - 6
Abstract
Electrolytes are characterized by their ionic conductivity (σi). It is desirable that overall σi 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 σi leading to inferior cell performances. Here we present an organogel polymer electrolyte characterized by a high liquid-electrolyte- level σi (∼101 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, σi 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.
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DOI
http://dx.doi.org/10.1038/srep01917
ISSN
2045-2322
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SNS_Journal Papers
ECHE_Journal Papers
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