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Triblock Copolymer/Polyoxometalate Nanocomposite Electrolytes with Inverse Hexagonal Cylindrical Nanostructures
Author(s) -
Zhai Liang,
Chai Shengchao,
Wang Gang,
Zhang Wei,
He Haibo,
Li Haolong
Publication year - 2020
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.202000438
Subject(s) - copolymer , materials science , nanocomposite , polyoxometalate , electrolyte , conductivity , polymer chemistry , polymer , chemical engineering , dynamic mechanical analysis , polystyrene , fast ion conductor , composite material , chemistry , electrode , organic chemistry , engineering , catalysis
Abstract The primary issue of polymer electrolytes is to achieve high ion conductivity while retaining mechanical properties. A nanocomposite electrolyte with the inverse hexagonal cylindrical phase (three‐dimensionally continuous domains for ion conduction and embedded domains for mechanical support) is prepared through the electrostatic self‐assembly of a polyoxometalate (H 3 PW 12 O 40 , PW) and a triblock copolymer poly(N‐vinyl pyrrolidone)‐block‐polystyrene‐block‐poly(N‐vinyl pyrrolidone) (PSP). The cylindrical nanocomposite exhibits a conductivity of 1.32 mS cm −1 and a storage modulus of 4.6 × 10 7 Pa at room temperature. These two values are higher than those of pristine PSP by two orders of magnitudes and a factor of six, respectively. PW clusters are used as multifunctional nano‐additives (morphological inducer, proton conductor, and nano‐enhancer) and their incorporation achieves the simultaneous improvement in both conductive and mechanical performance.