Designed chemical interactions of liquid-metal-filled microcapsules target areas of microstructural damage and restore conductive pathways. Significance and Impact
Selective self-healing mechanism extends the lifetime and reliability of electronic devices including battery electrodes.
Schematic of self-healing mechanism: Liquid Indium-Gallium metal stored in microcapsules flows to the damaged site and restores a conductive pathway.
Reference: Benjamin J. Blaiszik, Sharlotte L. B. Kramer, Martha E. Grady, David A. McIlroy, Jeffrey S. Moore, Nancy R. Sottos, and Scott R. White, Autonomic Restoration of Electrical Conductivity, Advanced Materials 24, 398-401 (2011). [DOI: 10.1002/adma.201102888].
Support: Work was performed at University of Illinois, Urbana-Champaign and supported by the Center for Electrical Energy Storage (CEES), an EFRC led by Michael Thackeray at Argonne National Laboratory.