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A Study on the Low Temperature Characteristics of Lithium-ion Batteries according to Electrolyte Composition
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전해액 조성에 따른 리튬이온 배터리의 저온 특성 연구

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Type
Academic journal
Author
Kyenghan Lee (한국자동차연구원) Gabjin Hwang (호서대학교) Cheolhwi Ryu (호서대학교)
Journal
Korean Battery Society Journal of the Korean Battery Society Vol.1 No.1 KCI Candidated Journals
Published
2021.6
Pages
19 - 24 (6page)
DOI
10.53619/KOBS.2021.06.1.1.19

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A Study on the Low Temperature Characteristics of Lithium-ion Batteries according to Electrolyte Composition
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2021

A Study on the Low Temperature Characteristics of Lithium-ion Batteries according to Electrolyte Composition
Kyenghan Lee ,  Gabjin Hwang ,  Cheolhwi Ryu Journal of the Korean Battery Society 2021.06 Academic journal
(A) study on the low temperature characteristics of lithium-ion batteries according to electrolyte composition
이경한 그린에너지공학과 2021.01 Thesis
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Lithium ion battery in a low-temperature state has a problem in that the capacity and lifespan rapidly decrease due to problems such as a decrease in ionic conductivity of an electrolyte and lithium precipitation, and thus needs improvement. In this paper, in order to improve this problem, an electrolyte was prepared by adding three solvents of Methyl acetate, Ethyl acetate and Ethyl propionate with 1M LiPF6/EC:EMC (1:3) electrolyte frequently used in commercial lithium-ion batteries as the standard electrolyte. Coin cells were manufactured using artificial graphite and LiNi<SUB>1-x-y</SUB>Co<SUB>x</SUB>Al<SUB>y</SUB>O₂(x=0.15, y=0.045) NCA as electrodes, and the electrochemical properties of the prepared coin cells were measured at room temperature (25℃) and low temperature (-20℃). As a result, the composition of 1M LiPF₆/EC:EMC:MA(1:3:6) was 20.2% higher than the standard electrolyte at low temperature, and showed the best electrochemical properties.
#리튬이온 배터리 #전해질 #저온 특성 #전기화학적 특성 #Li ion battery #Electrolyte #Low temperature characteristics #Electrochemical characteristics

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Abstract
1. 서론
2. 실험방법
3. 결과 및 고찰
4. 결론
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