TY - GEN
T1 - Thermoresponsive microcapsules for autonomic lithium-ion battery shutdown
AU - Baginska, M.
AU - Blaiszik, B. J.
AU - Odom, S. A.
AU - Esser-Kahn, A. E.
AU - Caruso, M. M.
AU - Moore, J. S.
AU - Sottos, N. R.
AU - White, S. R.
PY - 2011
Y1 - 2011
N2 - Lithium-ion batteries are commonly used in consumer electronics applications such as cellular phones and computers. However, there are safety concerns, such as external heating, over-charging, high current charging, or physical damage, which prevent their full market acceptance. Autonomic shutdown of lithium-ion batteries, through functionalization of battery electrodes with thermoresponsive microcapsules, is proposed as a fail-safe mechanism. The proposed concept relies on monomer-filled microcapsules that can be triggered to rupture within a desired temperature range and deliver an electrically isolating core to the electrode surface to shut down the battery cell. Preparation of thermoresponsive microcapsules that can be triggered to rupture using a low-boiling point solvent and deliver a thermally polymerizable core is described. Add tionally, we demonstrate that the rupture temperature can be controlled by appropriate selection of microencapsulated trigger solvents. Initial work on the coating of battery materials with thermoresponsive spheres is also described.
AB - Lithium-ion batteries are commonly used in consumer electronics applications such as cellular phones and computers. However, there are safety concerns, such as external heating, over-charging, high current charging, or physical damage, which prevent their full market acceptance. Autonomic shutdown of lithium-ion batteries, through functionalization of battery electrodes with thermoresponsive microcapsules, is proposed as a fail-safe mechanism. The proposed concept relies on monomer-filled microcapsules that can be triggered to rupture within a desired temperature range and deliver an electrically isolating core to the electrode surface to shut down the battery cell. Preparation of thermoresponsive microcapsules that can be triggered to rupture using a low-boiling point solvent and deliver a thermally polymerizable core is described. Add tionally, we demonstrate that the rupture temperature can be controlled by appropriate selection of microencapsulated trigger solvents. Initial work on the coating of battery materials with thermoresponsive spheres is also described.
KW - Autonomic
KW - Emulsion polymerization
KW - Lithium-ion batteries
KW - Microcapsules
KW - Thermoresponsive
UR - http://www.scopus.com/inward/record.url?scp=79960362361&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79960362361&partnerID=8YFLogxK
U2 - 10.1007/978-1-4419-9798-2_3
DO - 10.1007/978-1-4419-9798-2_3
M3 - Conference contribution
AN - SCOPUS:79960362361
SN - 9781441994936
T3 - Conference Proceedings of the Society for Experimental Mechanics Series
SP - 17
EP - 23
BT - Experimental Mechanics on Emerging Energy Systems and Materials - Proceedings of the 2010 Annual Conference on Experimental and Applied Mechanics
ER -
