Crosslinked perfluoropolyether solid electrolytes for lithium ion transport
Abstract
Perfluoropolyethers (PFPE) are commercially available non-flammable short chain polymeric liquids. End-functionalized PFPE chains solvate lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) salt and these mixtures can be used as electrolytes for lithium (Li) batteries. Here we synthesize and characterize a new class of solid PFPE electrolytes. The electrolytes are made by either thermal or UV crosslinking PFPE chains with urethane methacrylate end-groups. For the synthesis of thermally crosslinked electrolytes, polyhedral oligomeric silsesquioxane (POSS) with organic acrylopropyl groups was used as crosslinker agent, while for UV cured electrolytes a photoinitiatior was used. We present thermal, morphological, and electrical data of the solid electrolytes. We compare these properties with those of the two parent liquids (PFPE with urethane methacrylate end-groups and POSS with acrylopropyl groups) mixed with LiTFSI. The solubility limit of LiTFSI in the PFPE-based solids is higher than that in the liquids. The conductivity data are analyzed using the Vogel–Tamman–Fulcher equation. In conclusion, the concentration of effective charge carriers is a strong function of the nature of the solvent (solid versus liquid) whereas the activation energy is neither a strong function of the nature of the solvent nor salt concentration.
- Authors:
-
[1];
[2];
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); University of California, Berkeley, CA (United States)
- University of California, Berkeley, CA (United States)
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- University of North Carolina, Chapel Hill, NC (United States); North Carolina State University, Raleigh, NC (United States)
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES): National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1476567
- Alternate Identifier(s):
- OSTI ID: 1549859
- Grant/Contract Number:
- AC02-05CH11231; 1505669
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Solid State Ionics
- Additional Journal Information:
- Journal Volume: 310; Journal Issue: C; Related Information: © 2017; Journal ID: ISSN 0167-2738
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 25 ENERGY STORAGE; perfluoropolyether; polyhedral oligomeric silsesquioxane; solid electrolyte; crosslinked electrolyte; lithium battery
Citation Formats
Devaux, Didier, Villaluenga, Irune, Bhatt, Mahesh, Shah, Deep, Chen, X. Chelsea, Thelen, Jacob L., DeSimone, Joseph M., and Balsara, Nitash P. Crosslinked perfluoropolyether solid electrolytes for lithium ion transport. United States: N. p., 2017.
Web. doi:10.1016/j.ssi.2017.08.007.
Devaux, Didier, Villaluenga, Irune, Bhatt, Mahesh, Shah, Deep, Chen, X. Chelsea, Thelen, Jacob L., DeSimone, Joseph M., & Balsara, Nitash P. Crosslinked perfluoropolyether solid electrolytes for lithium ion transport. United States. https://doi.org/10.1016/j.ssi.2017.08.007
Devaux, Didier, Villaluenga, Irune, Bhatt, Mahesh, Shah, Deep, Chen, X. Chelsea, Thelen, Jacob L., DeSimone, Joseph M., and Balsara, Nitash P. Thu .
"Crosslinked perfluoropolyether solid electrolytes for lithium ion transport". United States. https://doi.org/10.1016/j.ssi.2017.08.007. https://www.osti.gov/servlets/purl/1476567.
@article{osti_1476567,
title = {Crosslinked perfluoropolyether solid electrolytes for lithium ion transport},
author = {Devaux, Didier and Villaluenga, Irune and Bhatt, Mahesh and Shah, Deep and Chen, X. Chelsea and Thelen, Jacob L. and DeSimone, Joseph M. and Balsara, Nitash P.},
abstractNote = {Perfluoropolyethers (PFPE) are commercially available non-flammable short chain polymeric liquids. End-functionalized PFPE chains solvate lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) salt and these mixtures can be used as electrolytes for lithium (Li) batteries. Here we synthesize and characterize a new class of solid PFPE electrolytes. The electrolytes are made by either thermal or UV crosslinking PFPE chains with urethane methacrylate end-groups. For the synthesis of thermally crosslinked electrolytes, polyhedral oligomeric silsesquioxane (POSS) with organic acrylopropyl groups was used as crosslinker agent, while for UV cured electrolytes a photoinitiatior was used. We present thermal, morphological, and electrical data of the solid electrolytes. We compare these properties with those of the two parent liquids (PFPE with urethane methacrylate end-groups and POSS with acrylopropyl groups) mixed with LiTFSI. The solubility limit of LiTFSI in the PFPE-based solids is higher than that in the liquids. The conductivity data are analyzed using the Vogel–Tamman–Fulcher equation. In conclusion, the concentration of effective charge carriers is a strong function of the nature of the solvent (solid versus liquid) whereas the activation energy is neither a strong function of the nature of the solvent nor salt concentration.},
doi = {10.1016/j.ssi.2017.08.007},
journal = {Solid State Ionics},
number = C,
volume = 310,
place = {United States},
year = {Thu Aug 17 00:00:00 EDT 2017},
month = {Thu Aug 17 00:00:00 EDT 2017}
}
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