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

Abstract

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.

Authors:
 [1]; ORCiD logo [2]; ORCiD logo [1]
  1. Department of Aerospace Engineering, University of Illinois Urbana-Champaign, 306 Talbot Laboratory, 104 S. Wright Street, Urbana, Illinois 61801, United States, Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, 405 N. Mathews Avenue, Urbana, Illinois 61801, United States
  2. Department of Materials Science and Engineering, University of Illinois Urbana-Champaign, Materials Science and Engineering Building, 1304 W. Green Street, Urbana, Illinois 61801, United States, Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, 405 N. Mathews Avenue, Urbana, Illinois 61801, United States
Publication Date:
Research Org.:
Univ. of Illinois at Urbana-Champaign, IL (United States); Energy Frontier Research Centers (EFRC) (United States). Center for Electrical Energy Storage (CEES)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1419828
Alternate Identifier(s):
OSTI ID: 1508751
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Published Article
Journal Name:
ACS Omega
Additional Journal Information:
Journal Name: ACS Omega Journal Volume: 3 Journal Issue: 2; Journal ID: ISSN 2470-1343
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE

Citation Formats

Baginska, Marta, Sottos, Nancy R., and White, Scott R. Core–Shell Microcapsules Containing Flame Retardant Tris(2-chloroethyl phosphate) for Lithium-Ion Battery Applications. United States: N. p., 2018. Web. https://doi.org/10.1021/acsomega.7b01950.
Baginska, Marta, Sottos, Nancy R., & White, Scott R. Core–Shell Microcapsules Containing Flame Retardant Tris(2-chloroethyl phosphate) for Lithium-Ion Battery Applications. United States. https://doi.org/10.1021/acsomega.7b01950
Baginska, Marta, Sottos, Nancy R., and White, Scott R. Wed . "Core–Shell Microcapsules Containing Flame Retardant Tris(2-chloroethyl phosphate) for Lithium-Ion Battery Applications". United States. https://doi.org/10.1021/acsomega.7b01950.
@article{osti_1419828,
title = {Core–Shell Microcapsules Containing Flame Retardant Tris(2-chloroethyl phosphate) for Lithium-Ion Battery Applications},
author = {Baginska, Marta and Sottos, Nancy R. and White, Scott R.},
abstractNote = {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.},
doi = {10.1021/acsomega.7b01950},
journal = {ACS Omega},
number = 2,
volume = 3,
place = {United States},
year = {2018},
month = {2}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1021/acsomega.7b01950

Citation Metrics:
Cited by: 2 works
Citation information provided by
Web of Science

Figures / Tables:

Figure 1. Figure 1.: Characterization of microcapsules containing TCP. (a) Scanning electron microscopy (SEM) image of microcapsules prepared at 1500 rpm. (b) SEM image of microcapsules prepared at 3000 rpm. (c) Histogram of microcapsules prepared at 1500 rpm. (d) Histogram of microcapsules prepared at 3000 rpm.

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    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.