콘텐츠 본문
논문 해외 국제전문학술지(SCI급) 3D electrochemical model for a Single Secondary Particle and its application for operando analysis
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2019-08
- 저자명 유명현,송지훈,박주남,Williams A. Appiah,김성수,Hirokazu Munakata,Kiyoshi Kanamura,이용민
- 학술지명 NANO ENERGY
- 발행처명 ELSEVIER
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 8
- 논문 다운로드 링크(외부) https://doi.org/10.1016/j.nanoen.2019.05.087
- 연구분야 공학 > 화학공학
논문 초록 (Abstract)
We developed a 3D electrochemical model for simulating the electrochemical properties and revealing the internal properties of a single LiFePO4 secondary particle during cycling. The main model parameters, such as the diffusion coefficient and rate constant, were optimized using rate capability data, which have been measured experimentally with a unique single particle measurement technique. We simulated voltage profiles at different c-rates from 2 to 20C, which were approximately equivalent to the experimental voltage profiles. The model estimated real-time overpotential, lithium ion concentration, and state-of-charge within the single particle, which have not been obtained experimentally, while changing design parameters and operating conditions. We validated the reliability and applicability of the model by comparing and analyzing the electrochemical results of various LiFePO4 secondary particles with variable design parameters (i.e., solid volume fraction, secondary particle size, and primary particle size).
