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Title: Tetraarylborate polymer networks as single-ion conducting solid electrolytes

Abstract

A new family of solid polymer electrolytes based upon anionic tetrakis(phenyl)borate tetrahedral nodes and linear bis-alkyne linkers is reported.

Authors:
 [1];  [2];  [3]; ORCiD logo [4];  [3];  [3];  [5]
  1. Department of Chemistry; Massachusetts Institute of Technology; Cambridge, USA 02139
  2. Department of Chemistry; University of California; Berkeley, USA 94720-1462
  3. Department of Chemistry and Chemical Biology; Baker Laboratory; Cornell University; Ithaca, USA 14853-1301
  4. Centre for Surface Chemistry and Catalysis; University of Leuven; 3001 Leuven, Belgium
  5. Department of Chemistry; University of California; Berkeley, USA 94720-1462; Division of Materials Sciences; Lawrence Berkeley National Laboratory
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC) (United States). Center for Gas Separations Relevant to Clean Energy Technologies (CGS)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1370685
DOE Contract Number:
SC0001015
Resource Type:
Journal Article
Resource Relation:
Journal Name: Chemical Science; Journal Volume: 6; Journal Issue: 10; Related Information: CGS partners with University of California, Berkeley; University of California, Davis; Lawrence Berkeley National Laboratory; University of Minnesota; National Energy Technology Laboratory; Texas A&M University
Country of Publication:
United States
Language:
English
Subject:
membrane, carbon capture, materials and chemistry by design, synthesis (novel materials), synthesis (self-assembly), synthesis (scalable processing)

Citation Formats

Van Humbeck, Jeffrey F., Aubrey, Michael L., Alsbaiee, Alaaeddin, Ameloot, Rob, Coates, Geoffrey W., Dichtel, William R., and Long, Jeffrey R.. Tetraarylborate polymer networks as single-ion conducting solid electrolytes. United States: N. p., 2015. Web. doi:10.1039/c5sc02052b.
Van Humbeck, Jeffrey F., Aubrey, Michael L., Alsbaiee, Alaaeddin, Ameloot, Rob, Coates, Geoffrey W., Dichtel, William R., & Long, Jeffrey R.. Tetraarylborate polymer networks as single-ion conducting solid electrolytes. United States. doi:10.1039/c5sc02052b.
Van Humbeck, Jeffrey F., Aubrey, Michael L., Alsbaiee, Alaaeddin, Ameloot, Rob, Coates, Geoffrey W., Dichtel, William R., and Long, Jeffrey R.. Thu . "Tetraarylborate polymer networks as single-ion conducting solid electrolytes". United States. doi:10.1039/c5sc02052b.
@article{osti_1370685,
title = {Tetraarylborate polymer networks as single-ion conducting solid electrolytes},
author = {Van Humbeck, Jeffrey F. and Aubrey, Michael L. and Alsbaiee, Alaaeddin and Ameloot, Rob and Coates, Geoffrey W. and Dichtel, William R. and Long, Jeffrey R.},
abstractNote = {A new family of solid polymer electrolytes based upon anionic tetrakis(phenyl)borate tetrahedral nodes and linear bis-alkyne linkers is reported.},
doi = {10.1039/c5sc02052b},
journal = {Chemical Science},
number = 10,
volume = 6,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 2015},
month = {Thu Jan 01 00:00:00 EST 2015}
}
  • A new family of solid polymer electrolytes based upon anionic tetrakis(phenyl)borate tetrahedral nodes and linear bis-alkyne linkers is reported.
  • A new family of solid polymer electrolytes based upon anionic tetrakis(phenyl)borate tetrahedral nodes and linear bis-alkyne linkers is reported. Sonogashira polymerizations using tetrakis(4-iodophenyl)borate, tetrakis(4-iodo-2,3,5,6-tetrafluorophenyl)borate and tetrakis(4-bromo-2,3,5,6-tetrafluorophenyl)borate delivered highly cross-linked polymer networks with both 1,4-diethynylbeznene and a tri(ethylene glycol) substituted derivative. Promising initial conductivity metrics have been observed, including high room temperature conductivities (up to 2.7 × 10 -4 S cm -1), moderate activation energies (0.25–0.28 eV), and high lithium ion transport numbers (up to t Li+ = 0.93). Initial investigations into the effects of important materials parameters such as bulk morphology, porosity, fluorination, and other chemical modification, provide starting designmore » parameters for further development of this new class of solid electrolytes.« less
  • Solid polymer electrolytes (SPEs) continue to be the subject of intense research due to their potential applications in rechargeable lithium batteries, specific ion sensors, electrochromic displays, and other electrochemical devices. However, the optimization of key parameters such as ionic conductivity, mechanical strength, and electrochemical stability is necessary for SPEs to be suitable for practical lithium batteries. Single-ion conductors have advantages over typical biion-based SPEs. During discharge in biion salt-based SPEs, mobile anions and cations migrate toward the oppositely charged electrodes, thereby polarizing the electrolyte and increasing its resistivity. Recharging the cell then requires more energy, time, and a greater electrochemicalmore » potential. This cell polarization problem is unique to biionic salt-based SPEs. This problem can be solved by using single-ion based conductors in which the anions are immobilized. In this communication, the authors report preliminary studies utilizing lithium polyphenolates as a new class of lithium ion source, which when blended with high molecular weight poly(ethylene oxide) give a new type of SPEs that exhibit high ionic conductivities.« less
  • Despite high ionic conductivities, current inorganic solid electrolytes cannot be used in lithium batteries because of a lack of compliance and adhesion to active particles in battery electrodes as they are discharged and charged. Here, we have successfully developed a compliant, nonflammable, hybrid single ion-conducting electrolyte comprising inorganic sulfide glass particles covalently bonded to a perfluoropolyether polymer. The hybrid with 23 wt% perfluoropolyether exhibits low shear modulus relative to neat glass electrolytes, ionic conductivity of 10 -4 S/cm at room temperature, a cation transference number close to unity, and an electrochemical stability window up to 5 V relative to Limore » +/Li. X-ray absorption spectroscopy indicates that the hybrid electrolyte limits lithium polysulfide dissolution and is, thus, ideally suited for Li-S cells. Our work opens a previously unidentified route for developing compliant solid electrolytes that will address the challenges of lithium batteries.« less