The Library
Thermal behavior and failure mechanism of lithium ion cells during overcharge under adiabatic conditions
Tools
Tools
Tools
Ye, Jiana, Chen, Haodong, Wang, Qingsong, Huang, Peifeng, Sun, Jinhua and Lo, Siuming (2016) Thermal behavior and failure mechanism of lithium ion cells during overcharge under adiabatic conditions. Applied Energy, 182 . pp. 464-474. doi:10.1016/j.apenergy.2016.08.124 ISSN 0306-2619.
Research output not available from this repository.
Request-a-Copy directly from author or use local Library Get it For Me service.
Official URL: http://dx.doi.org/10.1016/j.apenergy.2016.08.124
Abstract
Cells in battery packs are easily overcharged when battery management system (BMS) is out of order, causing thermal runaway. However, the traditional calorimetry could not estimate dynamic overcharging heat release. In this study, commercial LiCoO2 + Li(Ni0.5Co0.2Mn0.3)O2/C + SiOx cells are employed to investigate the dynamic thermal behaviors during overcharge under adiabatic condition by combining a multi-channel battery cycler with an accelerating rate calorimeter. The results indicate that overcharging with galvanostatic - potentiostatic - galvanostatic regime is more dangerous than that with galvanostatic way. Side reactions contribute 80% heat to thermal runaway in cases below 1.0 C charging rate. To prevent the thermal runaway, the effective methods should be taken within 2 min to cool down the batteries as soon as the cells pass inflection point voltage. Hereinto, the inflection and maximum voltages increase linearly with the increasing current rates. By scanning electron microscope and energy dispersive spectrometer, the decomposed products of cathode materials are suspected to be soluble with SiOx. The overcharge induced decomposition reaction of Li(Ni0.5Co0.2Mn0.3)O2 is also proposed. These results can provide support for the safety designs of lithium ion batteries and BMS.
| Item Type: | Journal Article | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||
| Journal or Publication Title: | Applied Energy | ||||||||
| Publisher: | Elsevier BV | ||||||||
| ISSN: | 0306-2619 | ||||||||
| Official Date: | 15 November 2016 | ||||||||
| Dates: |
|
||||||||
| Volume: | 182 | ||||||||
| Page Range: | pp. 464-474 | ||||||||
| DOI: | 10.1016/j.apenergy.2016.08.124 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Access rights to Published version: | Restricted or Subscription Access |
Request changes or add full text files to a record
Repository staff actions (login required)
 |
View Item |
