Full metadata record
DC Field | Value | Language |
---|---|---|
dc.citation.endPage | 1743 | - |
dc.citation.number | 5 | - |
dc.citation.startPage | 1737 | - |
dc.citation.title | ENERGY & ENVIRONMENTAL SCIENCE | - |
dc.citation.volume | 7 | - |
dc.contributor.author | Cho, Yoon-Gyo | - |
dc.contributor.author | Kim, Young-Soo | - |
dc.contributor.author | Sung, Dong-Gil | - |
dc.contributor.author | Seo, Myung-Su | - |
dc.contributor.author | Song, Hyun-Kon | - |
dc.date.accessioned | 2023-12-22T02:41:40Z | - |
dc.date.available | 2023-12-22T02:41:40Z | - |
dc.date.created | 2014-05-07 | - |
dc.date.issued | 2014-05 | - |
dc.description.abstract | The charge/discharge characteristics of lithium ion batteries at low temperature (LT = -20 °C) are enhanced by using ethylene carbonate (EC)-based electrolytes with the help of assistant solvents of nitriles. Conventional liquid electrolytes (e.g. a mixture of EC and dimethyl carbonate (DMC), abbreviated as LED) cannot support a satisfactory capacity at low temperature as well as at high rates even if electric vehicles require low-temperature operation. Introducing propionitrile or butyronitrile (Pn or Bn) into LED (resulting in LEDPn or LEDBn) as a co-solvent increases significantly the high-rate capacities at -20°C. For example, LEDPn delivers 62% of the available capacity at 1 C and 46% at 3 C with a 2.7 V cut-off while the control LED provides just 6% and 4% at the same rates. Successful operation at -20°C with nitrile-assistant electrolytes results from high ionic conductivity, low viscosity and freezing point depression caused by the eutectic behavior of the carbonates (EC/DMC) and Pn. Based on the phase diagram of Pn with EC/DMC, we expect a meaningful battery operation up to -110°C, probably lower, at the eutectic composition. | - |
dc.identifier.bibliographicCitation | ENERGY & ENVIRONMENTAL SCIENCE, v.7, no.5, pp.1737 - 1743 | - |
dc.identifier.doi | 10.1039/c3ee43029d | - |
dc.identifier.issn | 1754-5692 | - |
dc.identifier.scopusid | 2-s2.0-84898785574 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/4734 | - |
dc.identifier.url | http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84898785574 | - |
dc.identifier.wosid | 000335013700023 | - |
dc.language | 영어 | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.title | Nitrile-assistant eutectic electrolytes for cryogenic operation of lithium ion batteries at fast charges and discharges | - |
dc.type | Article | - |
dc.description.isOpenAccess | TRUE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary; Energy & Fuels; Engineering, Chemical; Environmental Sciences | - |
dc.relation.journalResearchArea | Chemistry; Energy & Fuels; Engineering; Environmental Sciences & Ecology | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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