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Using high‐HFP‐content cathode binder for mitigation of heat generation of lithium‐ion battery
Author(s) -
Le Anh V.,
Wang Meng,
Noelle Daniel J.,
Shi Yang,
Shirley Meng Y.,
Wu Dengguo,
Fan Jiang,
Qiao Yu
Publication year - 2017
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.3824
Subject(s) - hexafluoropropylene , thermal runaway , materials science , lithium (medication) , battery (electricity) , cathode , lithium ion battery , heat generation , ion , softening , composite material , thermal , chemical engineering , chemistry , copolymer , polymer , thermodynamics , engineering , organic chemistry , power (physics) , physics , endocrinology , medicine , tetrafluoroethylene
Summary We investigate the effects of thermally sensitive binder (TSB) on the temperature increase of lithium‐ion battery (LIB) coin cell subjected to severe mechanical abuse. The TSB is poly(vinylidenefluoride ‐co‐ hexafluoropropylene) (PVDF‐HFP), similar to conventional poly(vinylidenefluoride) (PVDF) binder but with a significant hexafluoropropylene (HFP) content. The testing data show that by using TSB, the peak temperature increase of nail‐penetrated LIB coin cell can be reduced by 20% to 40%, attributed to the softening of TSB that begins from ~80°C. The cycling performance of the LIB cells is also characterized. This research sheds light on the development of thermal‐runaway mitigation techniques.