Heterogeneous current collector in lithium-ion battery for thermal-runaway mitigation
Abstract
Current collector accounts for more than 90% of the electric conductivity and ∼90% of the mechanical strength of the electrode in lithium-ion battery (LIB). Usually, current collectors are smooth metallic thin films. In the current study, we show that if the current collector is heterogeneous, the heat generation becomes negligible when the LIB cell is subjected to mechanical abuse. The phenomenon is attributed to the guided strain concentration, which promotes the separation of the forward and the return paths of internal short circuit. As the internal impedance drastically increases, the stored electric energy cannot be dissipated as thermal energy. The modification of current collector does not affect the cycling performance of the LIB cell. This finding enables advanced thermal-runaway mitigation techniques for high-energy, large-scale energy storage systems.
- Authors:
- Publication Date:
- Sponsoring Org.:
- USDOE Advanced Research Projects Agency - Energy (ARPA-E)
- OSTI Identifier:
- 1349345
- Grant/Contract Number:
- AR0000396
- Resource Type:
- Publisher's Accepted Manuscript
- Journal Name:
- Applied Physics Letters
- Additional Journal Information:
- Journal Name: Applied Physics Letters Journal Volume: 110 Journal Issue: 8; Journal ID: ISSN 0003-6951
- Publisher:
- American Institute of Physics
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Wang, Meng, Le, Anh V., Shi, Yang, Noelle, Daniel J., and Qiao, Yu. Heterogeneous current collector in lithium-ion battery for thermal-runaway mitigation. United States: N. p., 2017.
Web. doi:10.1063/1.4975799.
Wang, Meng, Le, Anh V., Shi, Yang, Noelle, Daniel J., & Qiao, Yu. Heterogeneous current collector in lithium-ion battery for thermal-runaway mitigation. United States. https://doi.org/10.1063/1.4975799
Wang, Meng, Le, Anh V., Shi, Yang, Noelle, Daniel J., and Qiao, Yu. Tue .
"Heterogeneous current collector in lithium-ion battery for thermal-runaway mitigation". United States. https://doi.org/10.1063/1.4975799.
@article{osti_1349345,
title = {Heterogeneous current collector in lithium-ion battery for thermal-runaway mitigation},
author = {Wang, Meng and Le, Anh V. and Shi, Yang and Noelle, Daniel J. and Qiao, Yu},
abstractNote = {Current collector accounts for more than 90% of the electric conductivity and ∼90% of the mechanical strength of the electrode in lithium-ion battery (LIB). Usually, current collectors are smooth metallic thin films. In the current study, we show that if the current collector is heterogeneous, the heat generation becomes negligible when the LIB cell is subjected to mechanical abuse. The phenomenon is attributed to the guided strain concentration, which promotes the separation of the forward and the return paths of internal short circuit. As the internal impedance drastically increases, the stored electric energy cannot be dissipated as thermal energy. The modification of current collector does not affect the cycling performance of the LIB cell. This finding enables advanced thermal-runaway mitigation techniques for high-energy, large-scale energy storage systems.},
doi = {10.1063/1.4975799},
journal = {Applied Physics Letters},
number = 8,
volume = 110,
place = {United States},
year = {Tue Feb 21 00:00:00 EST 2017},
month = {Tue Feb 21 00:00:00 EST 2017}
}
https://doi.org/10.1063/1.4975799
Web of Science
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