共 60 条
Characterization and quantification of multi-field coupling in lithium-ion batteries under mechanical constraints
被引:10
作者:
Cai, Xue
[1
,2
,3
,4
]
Zhang, Caiping
[1
]
Chen, Zeping
[1
]
Zhang, Linjing
[1
]
Sauer, Dirk Uwe
[2
,3
,4
,5
]
Li, Weihan
[2
,3
,4
]
机构:
[1] Beijing Jiaotong Univ, Natl Act Distribut Network Technol Res Ctr, Beijing 100044, Peoples R China
[2] Rhein Westfal TH Aachen, Inst Power Elect & Elect Drives ISEA, Chair Electrochem Energy Convers & Storage Syst, Campus Blvd 89, D-52074 Aachen, Germany
[3] Ctr Ageing Reliabil & Lifetime Predict Electrochem, Campus Blvd 89, D-52074 Aachen, Germany
[4] JARA Energy, Juelich Aachen Res Alliance, Aachen, Germany
[5] Forschungszentrum Julich, Helmholtz Inst Munster HI MS, IEK 12, Julich, Germany
来源:
JOURNAL OF ENERGY CHEMISTRY
|
2024年
/
95卷
基金:
中国国家自然科学基金;
关键词:
Lithium-ion battery;
Muti-field coupling;
Mechanical constraints;
Interaction mechanisms;
Quantitative analysis;
CAPACITY FADE;
PARAMETERIZATION;
DEGRADATION;
TRANSPORT;
STRESS;
CELLS;
MODEL;
D O I:
10.1016/j.jechem.2024.03.048
中图分类号:
O69 [应用化学];
学科分类号:
081704 ;
摘要:
The safety and durability of lithium-ion batteries under mechanical constraints depend significantly on electrochemical, thermal, and mechanical fields in applications. Characterizing and quantifying the multi-field coupling behaviors requires interdisciplinary efforts. Here, we design experiments under mechanical constraints and introduce an in-situ analytical framework to clarify the complex interaction mechanisms and coupling degrees among multi-physics fields. The proposed analytical framework integrates the parameterization of equivalent models, in-situ mechanical analysis, and quantitative assessment of coupling behavior. The results indicate that the significant impact of pressure on impedance at low temperatures results from the diffusion-controlled step, enhancing kinetics when external pressure, like 180 to 240 kPa at 10 degrees C, is applied. The diversity in control steps for the electrochemical reaction accounts for the varying impact of pressure on battery performance across different temperatures. The thermal expansion rate suggests that the swelling force varies by less than 1.60% per unit of elevated temperature during the lithiation process. By introducing a composite metric, we quantify the coupling correlation and intensity between characteristic parameters and physical fields, uncovering the highest coupling degree in electrochemical-thermal fields. These results underscore the potential of analytical approaches in revealing the mechanisms of interaction among multi-fields, with the goal of enhancing battery performance and advancing battery management. (c) 2024 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by ELSEVIER B.V. and Science Press. This is an open access article under the CC BY-NC-ND license (http:// creativecommons.org/licenses/by-nc-nd/4.0/).
引用
收藏
页码:364 / 379
页数:16
相关论文