Thermal and overcharge abuse analysis of a redox shuttle for overcharge protection of LiFePO4

JOURNAL OF POWER SOURCES

卷:247

Article

Lamb, Joshua¹  Orendorff, Christopher J.¹  Amine, Khalil²  Krumdick, Gregory²  Zhang, Zhengcheng²  Zhang, Lu²  Gozdz, Antoni S.³ 

[1] Sandia Natl Labs, Albuquerque, NM 87185 USA

[2] Argonne Natl Lab, Argonne, IL 60439 USA

[3] A123 Syst LLC, Waltham, MA USA

关键词: Lithium-ion battery;    Overcharge;    Redox shuttle;    Calorimetry;   

DOI  :  10.1016/j.jpowsour.2013.08.044

来源: Elsevier

【 摘 要 】

This work investigated the performance and abuse tolerance of cells protected using the redox shuttle 1,4-bis(2-methoxyethoxy)-2,5-di-tert-butylbenzene. The thermal efficiencies were evaluated using isothermal battery calorimetry. Cells containing the overcharge shuttle were observed to reach a steady state value of approximately 3.8 V. with a small variance in direct proportion to the applied current. In all cases the heat output from the cells was measured to reach similar to 90% of the total input power. The heat output was also measured using isothermal calorimetry. At higher rates of overcharge, the data shows that the cell containing the shuttle rapidly reaches a steady state voltage, while the temperature increases until a moderately high steady state temperature is reached. The control cell meanwhile rapidly increases in both applied voltage and cell temperature until cell failure. Two cells in series were taken deliberately out of balance individually, then charged as a single pack to observe the time needed to bring the cells into balance with one another. (C) 2013 Elsevier B.V. All rights reserved.

【 授权许可】

Free