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Modeling Rate Dependent Volume Change in Porous Electrodes in Lithium-Ion Batteries
被引:7
作者:
Garrick, Taylor R.
[1
]
Fernandez, Miguel A.
[1
]
Koch, Brian J.
[2
]
Efimoff, Erin
[1
]
Jones, Matthew
[1
]
Mollah, Rafid
[1
]
Teel, Hunter
[1
,3
]
Du, Xiaoniu
[4
]
Shimpalee, Sirivatch
[3
]
Choe, Song-Yul
[4
]
Subramanian, Venkat R.
[5
]
Siegel, Jason B.
[6
]
机构:
[1] Gen Motors Global Tech Ctr, Global Electrificat & Battery Syst, Warren, MI 48092 USA
[2] Gen Motors Global Tech Ctr, Battery Mat & Syst Res, Warren, MI 48092 USA
[3] Univ South Carolina, Chem Engn, Columbia, SC 29208 USA
[4] Auburn Univ, Mech Engn, Auburn, AL 36849 USA
[5] Univ Texas Austin, Texas Mat Inst, Dept Mech Engn & Mat Sci Engn, Austin, TX 78712 USA
[6] Univ Michigan, Mech Engn, Ann Arbor, MI 48109 USA
关键词:
batteries;
-;
lithium;
electrochemical engineering;
volume change;
electric vehicle;
intercalation;
graphite;
LINEAR-SWEEP VOLTAMMETRY;
MULTI-REACTION MODEL;
INTERCALATION ELECTRODES;
OPTIMIZATION;
PERFORMANCE;
SIMULATION;
D O I:
10.1149/1945-7111/ad6483
中图分类号:
O646 [电化学、电解、磁化学];
学科分类号:
081704 ;
摘要:
Automotive manufacturers are working to improve individual cell, module, and overall pack design by increasing the performance, range, and durability, while reducing cost. One key piece to consider during the design process is the active material volume change, its linkage to the particle, electrode, and cell level volume changes, and the interplay with structural components in the rechargeable energy storage system. As the time from initial design to manufacture of electric vehicles decreases, design work needs to move to the virtual domain; therefore, a need for coupled electrochemical-mechanical models that take into account the active material volume change and the rate dependence of this volume change need to be considered. In this study, we illustrated the applicability of a coupled electrochemical-mechanical battery model considering multiple representative particles to capture experimentally measured rate dependent reversible volume change at the cell level through the use of an electrochemical-mechanical battery model that couples the particle, electrode, and cell level volume changes. By employing this coupled approach, the importance of considering multiple active material particle sizes representative of the distribution is demonstrated. The non-uniformity in utilization between two different size particles as well as the significant spatial non-uniformity in the radial direction of the larger particles is the primary driver of the rate dependent characteristics of the volume change at the electrode and cell level.
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页数:24
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