Synthesis and Characterization of Proton-conducting Polymer Electrolytes Based on Acrylonitrile-Styrene Sulfonic Acid Copolymer/Layered Double Hydroxides Nanocomposites

Abstract

Abstract: Acrylonitrile-sodium styrene sulfonate copolymer/layered double hydroxides nanocomposites were prepared by in situ aqueous precipitation copolymerization of acrylonitrile(AN) and sodium styrene sulfonate(SSS) in the presence of 4-vinylbenzene sulfonate intercalated layered double hydroxides(MgAl-VBS LDHs) and transferred to acrylonitrile-styrene sulfonic acid(AN-SSA) copolymer/LDHs nanocomposites as a proton-conducting polymer electrolyte.MgAl-VBS LDHs were prepared by a coprecipitation method,and the structure and composition of MgAl-VBS LDHs were determined by X-ray diffraction(XRD),infrared spectroscopy,and elemental analysis.X-ray diffraction result of AN-SSS copolymer/LDHs nanocomposites indicated that the LDHs layers were well dispersed in the AN-SSS copolymer matrix.All the AN-SSS copolymer/LDHs nanocomposites showed significant enhancement of the decomposition temperatures compared with the pristine AN-SSS copolymer,as identified by the thermogravimetric analysis.The methanol crossover was decreased and the proton conductivity was highly enhanced for the AN-SSA copolymer/LDHs nanocomposite electrolyte systems.In the case of the nanocomposite electrolyte containing 2% (by mass) LDHs,the proton conductivity of 2.60×10^-3S·m^-1 was achieved for the polymer electrolyte.

Key words: acrylonitrile, sodium styrene sulfonate, layered double hydroxides, nanocomposite, polymer electrolyte, proton conductivity

摘要： Acrylonitrile-sodium styrene sulfonate copolymer/layered double hydroxides nanocomposites were prepared by in situ aqueous precipitation copolymerization of acrylonitrile(AN) and sodium styrene sulfonate(SSS) in the presence of 4-vinylbenzene sulfonate intercalated layered double hydroxides(MgAl-VBS LDHs) and transferred to acrylonitrile-styrene sulfonic acid(AN-SSA) copolymer/LDHs nanocomposites as a proton-conducting polymer electrolyte.MgAl-VBS LDHs were prepared by a coprecipitation method,and the structure and composition of MgAl-VBS LDHs were determined by X-ray diffraction(XRD),infrared spectroscopy,and elemental analysis.X-ray diffraction result of AN-SSS copolymer/LDHs nanocomposites indicated that the LDHs layers were well dispersed in the AN-SSS copolymer matrix.All the AN-SSS copolymer/LDHs nanocomposites showed significant enhancement of the decomposition temperatures compared with the pristine AN-SSS copolymer,as identified by the thermogravimetric analysis.The methanol crossover was decreased and the proton conductivity was highly enhanced for the AN-SSA copolymer/LDHs nanocomposite electrolyte systems.In the case of the nanocomposite electrolyte containing 2% (by mass) LDHs,the proton conductivity of 2.60×10^-3S·m^-1 was achieved for the polymer electrolyte.

关键词: acrylonitrile, sodium styrene sulfonate, layered double hydroxides, nanocomposite, polymer electrolyte, proton conductivity

WANG Angran, BAO Yongzhong, WENG Zhixue, HUANG Zhiming. Synthesis and Characterization of Proton-conducting Polymer Electrolytes Based on Acrylonitrile-Styrene Sulfonic Acid Copolymer/Layered Double Hydroxides Nanocomposites[J]. , 2008, 16(6): 938-943.

王盎然, 包永忠, 翁志学, 黄志明. Synthesis and Characterization of Proton-conducting Polymer Electrolytes Based on Acrylonitrile-Styrene Sulfonic Acid Copolymer/Layered Double Hydroxides Nanocomposites[J]. , 2008, 16(6): 938-943.

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