TY - JOUR
T1 - Prevention of Lithium-Ion Battery Thermal Runaway Using Polymer-Substrate Current Collectors
AU - Pham, Martin
AU - Darst, John
AU - Walker, William
AU - Heenan, Thomas
AU - Patel, Drasti
AU - Iacoviello, Francesco
AU - Rack, Alexander
AU - Olbinado, Margie
AU - Hinds, Gareth
AU - Brett, Dan
AU - Darcy, Eric
AU - Finegan, Donal
AU - Shearing, Paul
N1 - Publisher Copyright:
© 2021
PY - 2021/3/24
Y1 - 2021/3/24
N2 - Isolating electronically conducting material from internal short circuits is a promising way to prevent the onset of thermal runaway within lithium-ion cells. Here, a metal-coated polymer current collector, which is designed to disconnect internal short circuits by withdrawing from the heating region, is tested in 18650 cells. In addition to having lower mass and manufacturing costs, cells with metal-coated polymer current collectors demonstrate a reduced risk of thermal runaway during nail penetration. High-speed synchrotron X-ray radiography of 18650 cells during nail-penetration testing, in tandem with pre- and post-mortem X-ray computed tomography, provides insights into the function of the current collectors. The results are compared with those of 18650 cells with standard commercial aluminum and copper current collectors. Cells with aluminum-coated polymer current collectors demonstrated 100% success in thermal runaway prevention during nail penetration, retaining a cell voltage >4.00 V, while standard cells consistently experienced thermal runaway.
AB - Isolating electronically conducting material from internal short circuits is a promising way to prevent the onset of thermal runaway within lithium-ion cells. Here, a metal-coated polymer current collector, which is designed to disconnect internal short circuits by withdrawing from the heating region, is tested in 18650 cells. In addition to having lower mass and manufacturing costs, cells with metal-coated polymer current collectors demonstrate a reduced risk of thermal runaway during nail penetration. High-speed synchrotron X-ray radiography of 18650 cells during nail-penetration testing, in tandem with pre- and post-mortem X-ray computed tomography, provides insights into the function of the current collectors. The results are compared with those of 18650 cells with standard commercial aluminum and copper current collectors. Cells with aluminum-coated polymer current collectors demonstrated 100% success in thermal runaway prevention during nail penetration, retaining a cell voltage >4.00 V, while standard cells consistently experienced thermal runaway.
KW - battery safety
KW - current collectors
KW - high speed X-ray imaging
KW - lithium-ion thermal runaway
KW - thermal runaway prevention
UR - http://www.scopus.com/inward/record.url?scp=85102998295&partnerID=8YFLogxK
U2 - 10.1016/j.xcrp.2021.100360
DO - 10.1016/j.xcrp.2021.100360
M3 - Article
AN - SCOPUS:85102998295
SN - 2666-3864
VL - 2
JO - Cell Reports Physical Science
JF - Cell Reports Physical Science
IS - 3
M1 - Article No. 100360
ER -