Core–Shell Microcapsules Containing Flame Retardant Tris(2-chloroethyl phosphate) for Lithium-Ion Battery Applications | Zendy

Marta Baginska | Zendy; Nancy R. Sottos | Zendy; Scott R. White | Zendy

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Core–Shell Microcapsules Containing Flame Retardant Tris(2-chloroethyl phosphate) for Lithium-Ion Battery Applications

Author(s) -

Marta Baginska,

Nancy R. Sottos,

Scott R. White

Publication year - 2018

Publication title -

acs omega

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.779

H-Index - 40

ISSN - 2470-1343

DOI - 10.1021/acsomega.7b01950

Subject(s) - fire retardant , electrolyte , materials science , chemical engineering , phosphate , battery (electricity) , lithium (medication) , lithium iron phosphate , inorganic chemistry , polymer chemistry , chemistry , composite material , electrochemistry , electrode , organic chemistry , medicine , power (physics) , physics , quantum mechanics , engineering , endocrinology

Flame retardant tris(2-chloroethyl phosphate) (TCP) is successfully encapsulated in core-shell poly(urea-formaldehyde) microcapsules by in situ polymerization. The microcapsules are electrochemically stable in lithium-ion (Li-ion) battery electrolytes and thermally stable to ca. 200 °C. Thermal triggering of these microcapsules at higher temperatures ruptures the shell wall, releasing the liquid core (flame retardant), and NMR spectroscopy confirms the presence of the flame retardant in the electrolyte solution. Li-ion pouch cell experiments demonstrate that microencapsulation of TCP and its incorporation into the battery electrolyte provide latent fire retardants that improve battery safety while maintaining inherent battery performance and cycling capability.

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