.png){kind=icon}
返回
Insight into LIB Diffusion Phenomena Using Analytical Impedance Models
.png){kind=icon}
OA
AI
DOI：10.1149/1945-7111/ace55b.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Electrochemical impedance spectroscopy (EIS) is extensively used to characterize the transport properties in porous electrodes of lithium-ion batteries (LIB). In the low-frequency domain (f < 1 Hz), solid diffusion and electrolyte diffusion are competing over similar timescales, which explains why both phenomena are difficult to characterize independently. In which case can the solid diffusion coefficient be correctly extracted from experimental EIS? To answer this question, the linearized P2D-Newman model of a complete cell is solved using a Fourier transform to obtain a physics-based analytical impedance. The solution allows deriving the characteristic frequencies and non-dimensional numbers of the system, and gives the parameters range for which solid diffusion is overwhelming electrolyte transport in the impedance signal. A simple criterion is then given to discriminate electrodes that are properly designed for active materials electrochemical characterization.
Keyword:
Batteries-Li-ion
Theory and Modelling
Electrode Kinetics
Electrochemical impedance
期刊
IF:
3.3
论文数:
3.3W
被引数:
9.4W
机构
引用论文
The impedance response of a porous electrode composed of intercalation particles由嵌入颗粒组成的多孔电极的阻抗响应
PREAI
分享收藏Analytical expression for the impedance response of an insertion electrode cell插入电极电池阻抗响应的解析表达式
PREAI
分享收藏Editors' Choice-Review-Impedance Response of Porous Electrodes: Theoretical Framework, Physical Models and Applications编辑选择-评论-多孔电极的阻抗响应: 理论框架，物理模型和应用OAAI
OAAI分享收藏Experimental and theoretical investigation of Li-ion battery active materials properties: Application to a graphite/Ni0.6Mn0.2Co0.2O2 system锂离子电池活性材料性能的实验和理论研究: 在石墨/Ni0.6Mn0.2Co0.2O2系统中的应用.png)
ELECTROCHIMICA ACTA
OAAI
ELECTROCHIMICA ACTAIF5.6
OAAI分享收藏
查看更多内容