Modified Plett-model for modeling voltage hysteresis in lithium-ion cells

被引：21

作者：

Wycisk, Dominik ^{[1
,2
]}

Oldenburger, Marc ^{[1
]}

Stoye, Marc Gerry ^{[1
]}

Mrkonjic, Toni ^{[1
]}

Latz, Arnulf ^{[2
]}

机构：

[1] Mercedes Benz AG, Neue Stasse 95, D-73230 Kirchheim, Germany

[2] Ulm Univ, Albert Einstein Allee 47, D-89091 Ulm, Germany

来源：

JOURNAL OF ENERGY STORAGE | 2022年 / 52卷

关键词：

Lithium-ion battery; Voltage hysteresis; Plett-model; Silicon-graphite anode; IMPEDANCE;

D O I：

10.1016/j.est.2022.105016

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Lithium-ion cells, especially anode materials like graphite or silicon, exhibit a charge-direction dependent voltage hysteresis. In literature, several approaches exist to model this effect. This paper aims at showing modifications to the so called Plett-model. It will be shown that the specific slope of the transition between charge and discharge OCV curves can be linked to the slope of the OCV curves themselves. This leads to a significant reduction in measurement and parameterization time. Furthermore, this paper features the application of the improved model to composite electrodes. The separation of the contributions of graphite and silicon leads to an improved modeling of the total voltage hysteresis.

引用

页数：7

共 31 条

[1] An approach to characterize and clarify hysteresis phenomena of lithium-silicon electrodes [J].