TY - JOUR
T1 - Synthesis of Sodium Poly[4-styrenesulfonyl(trifluoromethylsulfonyl)imide]-co-ethylacrylate] Solid Polymer Electrolytes
AU - Li, Jiaye
AU - Zhu, Haijin
AU - Wang, Xiaoen
AU - Armand, Michel
AU - Macfarlane, Douglas R.
AU - Forsyth, Maria
N1 - Publisher Copyright:
© 2015 Elsevier Ltd. All rights reserved.
PY - 2015/8/22
Y1 - 2015/8/22
N2 - Sodium-based batteries are being considered to replace Li-based batteries for the fabrication of large-scale energy storage devices. One of the main obstacles is the lack of safe and conductive solid Na-ion electrolytes. A Na-ion polymer based on the (4-styrenesulfonyl(trifluromethylsulfonyl) imide anion, Na[STFSI], has been prepared by a radical polymerization process and its conductive properties determined. In addition, a number of multi-component polymers were synthetized by co-reaction of two monomers: Na[STFSI] and ethyl acrylate (EA) at different ratios. The structural and phase characterizations of the polymers were probed by various techniques (DSC, TGA, NMR, GPC, Raman, FTIR and Impedance spectroscopy). Comparative studies with blends of the homopolymers Na[PSTFSI] and poly(ethylacrylate) (PEA) have also been performed. The polymers are all thermally stable up to 300°C and the ionic conductivity of EA copolymers and EA blends are about 1-3 orders of magnitude higher than that of Na[PSTFSI]. The highest conductivity measured at 100°C was found for Na[PSTFSI-blend-5EA] at 7.9 × 10-9 S cm-1, despite being well below its Tg. Vibrational spectroscopy indicates interaction between Na+ and the EA carbonyl groups, with a concomitant decrease in the sulfonyl interaction, facilitating Na+ motion, as well as lowering Tg.
AB - Sodium-based batteries are being considered to replace Li-based batteries for the fabrication of large-scale energy storage devices. One of the main obstacles is the lack of safe and conductive solid Na-ion electrolytes. A Na-ion polymer based on the (4-styrenesulfonyl(trifluromethylsulfonyl) imide anion, Na[STFSI], has been prepared by a radical polymerization process and its conductive properties determined. In addition, a number of multi-component polymers were synthetized by co-reaction of two monomers: Na[STFSI] and ethyl acrylate (EA) at different ratios. The structural and phase characterizations of the polymers were probed by various techniques (DSC, TGA, NMR, GPC, Raman, FTIR and Impedance spectroscopy). Comparative studies with blends of the homopolymers Na[PSTFSI] and poly(ethylacrylate) (PEA) have also been performed. The polymers are all thermally stable up to 300°C and the ionic conductivity of EA copolymers and EA blends are about 1-3 orders of magnitude higher than that of Na[PSTFSI]. The highest conductivity measured at 100°C was found for Na[PSTFSI-blend-5EA] at 7.9 × 10-9 S cm-1, despite being well below its Tg. Vibrational spectroscopy indicates interaction between Na+ and the EA carbonyl groups, with a concomitant decrease in the sulfonyl interaction, facilitating Na+ motion, as well as lowering Tg.
KW - Electrolyte
KW - Polymer
KW - Sodium Battery
UR - http://www.scopus.com/inward/record.url?scp=84940712226&partnerID=8YFLogxK
U2 - 10.1016/j.electacta.2015.03.075
DO - 10.1016/j.electacta.2015.03.075
M3 - 文章
AN - SCOPUS:84940712226
SN - 0013-4686
VL - 175
SP - 232
EP - 239
JO - Electrochimica Acta
JF - Electrochimica Acta
ER -