TY - JOUR
T1 - Ion-Containing Polymer-Grafted Nanoparticles in Ionic Liquids
T2 - Implications for Polymer Electrolyte Membranes
AU - Liu, Siqi
AU - Wu, Di
AU - Akcora, Pinar
N1 - Publisher Copyright:
© 2021 American Chemical Society.
PY - 2021/8/27
Y1 - 2021/8/27
N2 - Polymer-grafted nanoparticles offer several advantages in designing electrolyte systems for their uses in fuel cells, supercapacitors, or actuators. In this work, stabilization of poly(methyl methacrylate) (PMMA)-grafted magnetic nanoparticles with polystyrene sulfonate (PSS) end domains in ionic liquid/cosolvent mixtures is presented. We propose that anions and cations pertaining to ionic liquid preferentially interact with the methyl groups of PMMA and the sulfonated groups of PSS, respectively. These interactions can be used to mitigate the whole ionic conductivity and the free mobile counterion distribution in the copolymer-grafted nanoparticle-based electrolyte membranes. PMMA-b-PSS-grafted nanoparticles with low sulfonation amount and long PMMA chains are found to exhibit the highest conductivity in acetonitrile and 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (HMIM-TFSI) mixtures compared to the particles with the higher sulfonation amount and shorter PMMA chains.
AB - Polymer-grafted nanoparticles offer several advantages in designing electrolyte systems for their uses in fuel cells, supercapacitors, or actuators. In this work, stabilization of poly(methyl methacrylate) (PMMA)-grafted magnetic nanoparticles with polystyrene sulfonate (PSS) end domains in ionic liquid/cosolvent mixtures is presented. We propose that anions and cations pertaining to ionic liquid preferentially interact with the methyl groups of PMMA and the sulfonated groups of PSS, respectively. These interactions can be used to mitigate the whole ionic conductivity and the free mobile counterion distribution in the copolymer-grafted nanoparticle-based electrolyte membranes. PMMA-b-PSS-grafted nanoparticles with low sulfonation amount and long PMMA chains are found to exhibit the highest conductivity in acetonitrile and 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (HMIM-TFSI) mixtures compared to the particles with the higher sulfonation amount and shorter PMMA chains.
KW - HMIM-TFSI
KW - conductivity
KW - electrolyte membrane
KW - ionic liquid
KW - polymer-grafted nanoparticles
KW - solvation
UR - http://www.scopus.com/inward/record.url?scp=85111562511&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85111562511&partnerID=8YFLogxK
U2 - 10.1021/acsanm.1c01369
DO - 10.1021/acsanm.1c01369
M3 - Article
AN - SCOPUS:85111562511
VL - 4
SP - 8108
EP - 8115
JO - ACS Applied Nano Materials
JF - ACS Applied Nano Materials
IS - 8
ER -