| 학회 |
한국공업화학회 |
| 학술대회 |
2022년 봄 (05/11 ~ 05/13, 제주국제컨벤션센터(ICC JEJU)) |
| 권호 |
26권 1호 |
| 발표분야 |
포스터-전기화학 |
| 제목 |
Unveiling the effects of the diffusivity and exchange current density on the electrochemical modeling of lithium-ion batteries |
| 초록 |
The diffusivity andexchange current density are the two main parameters that determine both ionicsand electrodics in the Newman’s battery model. Nonetheless, bothparameters are normally obtained from literatures or experimental datameasured under specific conditions, furthermore, and they are occasionallyoverfitted to coincide with real electrochemical behaviors without sufficientconsideration. Herein, the diffusivities and exchange current densities of aLiNi0.4Mn0.3Co0.3O2 cathode are measured and applied to the electrochemical half-cellmodel using four different electrochemical techniques: galvanostaticintermittent titration technique (GITT), potentiostatic intermittent titrationtechnique (PITT), electrochemical impedance spectroscopy (EIS), and cyclicvoltammetry (CV). The model adopting the diffusivity and exchange currentdensity measured in PITT and EIS, respectively, simulates the actual voltageand capacity profiles well with low errors without any fitting. |
| 저자 |
이효빈1, 양승원1, 김수환1, 송지훈1, 박주남1, 도칠훈2, 하윤철2, 권태순3, 이용민1
|
| 소속 |
1DGIST, 2KERI, 3KRRI |
| 키워드 |
electrochemical model; diffusion coefficient; exchange current density; GITT; PITT; EIS; CV
|
| E-Mail |
|
