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A star-shaped single lithium-ion conducting copolymer by grafting a POSS nanoparticle

Journal Article · · Polymer
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  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Univ. of Tennessee, Knoxville, TN (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
+ Show Author Affiliations
Single-ion conducting polymer electrolytes (SCPE) are attractive candidates for high-performance energy storage devices. A star-shaped single lithium-ion conducting polymer electrolyte was synthesized by combining the “grafting to” and “grafting from” strategy utilizing a polyhedral oligomeric silsesquioxane (POSS) nanoparticle as the core. Carboxylic acid terminated polyethylene oxide (PEO) and Reversible Addition Fragmentation Chain Transfer Agent (RAFT-CTA) were attached to the POSS nanoparticle to form a POSS-cored macro RAFT CTA (PMR-CTA). The PMR-CTA was used to mediate the polymerization of potassium (styrene-4-sulfonyltrifluoromethyl-sulfonyl)imide (STF-K+) and subsequent counter ion exchange resulted in a star-shaped single lithium-ion conducting copolymer (SSCP-Li+). The grafting ratio of poly(STF-Li+) and PEO per POSS nanoparticle can be tuned by modifying the feed ratio of the two polymer components. The synthesized star-shaped SCPE-Li+ are characterized by 1H NMR, FT-IR, UV-Vis, DLS, GPC and DSC, and their ionic conductivity is studied by broadband dielectric spectroscopy. The obtained results are compared to a conventional linear homopolymer poly(STF-Li+) and block copolymer PEO-b-poly(STF-Li+), and reveal a significant “decoupling” of ion conductivity from segmental dynamics for all of the studied SCPE-Li+. As a result, blending extra PEOs with SCPE-Li+ was also performed to improve the ionic conductivity.
Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1515704
Alternate ID(s):
OSTI ID: 1394461
OSTI ID: 1399133
OSTI ID: 1495587
Journal Information:
Polymer, Journal Name: Polymer Journal Issue: C Vol. 124; ISSN 0032-3861
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (8)

Study on Surface Properties of Aramid Fiber Modified in Supercritical Carbon Dioxide by Glycidyl-POSS journal April 2019
Superstretchable, Self-Healing Polymeric Elastomers with Tunable Properties journal April 2018
Polyhedral Oligomeric Silsesquioxane Hybrid Polymers: Well‐Defined Architectural Design and Potential Functional Applications journal July 2019
Synthesis of POSS-functionalized liquid crystalline block copolymers via RAFT polymerization for stabilizing blue phase helical soft superstructures journal January 2018
Toughening of POSS–MPS composites with low dielectric constant prepared with structure controllable micro/mesoporous nanoparticles journal January 2018
Non-solvating, side-chain polymer electrolytes as lithium single-ion conductors: synthesis and ion transport characterization journal January 2020
Block Copolymers: Synthesis, Self-Assembly, and Applications journal October 2017
Synthesis of naturally-derived macromolecules through simplified electrochemically mediated ATRP journal January 2017

Figures / Tables (11)

Scheme 1(p. 8)figure Scheme 1
Figure 1(p. 11)figure Figure 1
Figure 2(p. 12)figure Figure 2
Figure 3(p. 14)figure Figure 3
Figure 4(p. 15)figure Figure 4
Figure 5(p. 17)figure Figure 5
Figure 6(p. 18)figure Figure 6
Table 1(p. 19)table Table 1
Figure 7(p. 20)figure Figure 7
Figure 8(p. 21)figure Figure 8
Figure 9(p. 22)figure Figure 9

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
POSS
Polymer electrolyte
Single-ion conducting
Star-shaped
dc conductivity