콘텐츠 본문
논문 국내 국내전문학술지(KCI급) Effect of LiCoO2 Cathode Density and Thickness on Electrochemical Performance of Lithium-Ion Batteries
- 학술지 구분 국내전문학술지(KCI급)
- 게재년월 2013-03
- 저자명 최재철, 손봉기, 류명현, 김상헌, 고장면, 이용민
- 학술지명 Journal of Electrochemical Science and Technology
- 발행처명 대한전기화학회
- 발행국가 국내
- 논문언어 한국어
- 전체저자수 5
- 논문 다운로드 링크(외부) https://doi.org/10.5229/JECST.2013.4.1.27
- 연구분야 공학 > 화학공학
논문 초록 (Abstract)
The consequences of electrode density and thickness for electrochemical performance of lithium-ion cells are investigated using 2032-type coin half cells. While the cathode composition is maintained by 90:5:5 (wt.%) with LiCoO2 active material, Super-P electric conductor and polyvinylidene fluoride polymeric binder, its density and thickness are independently controlled to 20, 35, 50 um and 1.5, 2.0, 2.5, 3.0, 3.5 g cm−3, respectively, which are based on commercial lithium-ion battery cathode system. As the cathode thickness is increased in all densities, the rate capability and cycle life of lithium-ion cells become significantly worse. On the other hand, even though the cathode density shows similar behavior, its effect is not as high as the thickness in our experimental range. This trend is also investigated by cross-sectional morphology, porosity and electric conductivity of cathodes with different densities and thicknesses. This work suggests that the electrode density and thickness should be chosen properly and mentioned in detail in any kinds of research works.
