콘텐츠 본문
논문 해외 국제전문학술지(SCI급) Design optimization of LiNi0. 6Co0. 2Mn0. 2O2/graphite lithium-ion cells based on simulation and experimental data
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2016-07
- 저자명 Williams Agyei Appiah, Joonam Park, Seonghyun Song, Seoungwoo Byun, Myung-Hyun Ryou, Yong Min Lee
- 학술지명 Journal of Power Sources
- 발행처명 Elsevier
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 6
- 논문 다운로드 링크(외부) https://doi.org/10.1016/j.jpowsour.2016.04.052
- 연구분야 공학 > 화학공학
논문 초록 (Abstract)
LiNi0.6Co0.2Mn0.2O2 cathodes of different thicknesses and porosities are prepared and tested, in order to optimize the design of lithium-ion cells. A mathematical model for simulating multiple types of particles with different contact resistances in a single electrode is adopted to study the effects of the different cathode thicknesses and porosities on lithium-ion transport using the nonlinear least squares technique. The model is used to optimize the design of LiNi0.6Co0.2Mn0.2O2/graphite lithium-ion cells by employing it to generate a number of Ragone plots. The cells are optimized for cathode porosity and thickness, while the anode porosity, anode-to-cathode capacity ratio, thickness and porosity of separator, and electrolyte salt concentration are held constant. Optimization is performed for discharge times ranging from 10 h to 5 min. Using the Levenberg-Marquardt method as a fitting technique, accounting for multiple particles with different contact resistances, and employing a rate-dependent solid-phase diffusion coefficient results in there being good agreement between the simulated and experimentally determined discharge curves. The optimized parameters obtained from this study should serve as a guide for the battery industry as well as for researchers for determining the optimal cell design for different applications.
