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  • Title: Single Lithium-Ion Conducting Polymer Electrolytes Based on a Super-Delocalized Polyanion.
    Author: Ma Q, Zhang H, Zhou C, Zheng L, Cheng P, Nie J, Feng W, Hu YS, Li H, Huang X, Chen L, Armand M, Zhou Z.
    Journal: Angew Chem Int Ed Engl; 2016 Feb 12; 55(7):2521-5. PubMed ID: 26840215.
    Abstract:
    A novel single lithium-ion (Li-ion) conducting polymer electrolyte is presented that is composed of the lithium salt of a polyanion, poly[(4-styrenesulfonyl)(trifluoromethyl(S-trifluoromethylsulfonylimino)sulfonyl)imide] (PSsTFSI(-)), and high-molecular-weight poly(ethylene oxide) (PEO). The neat LiPSsTFSI ionomer displays a low glass-transition temperature (44.3 °C; that is, strongly plasticizing effect). The complex of LiPSsTFSI/PEO exhibits a high Li-ion transference number (tLi (+) =0.91) and is thermally stable up to 300 °C. Meanwhile, it exhibits a Li-ion conductivity as high as 1.35×10(-4)  S cm(-1) at 90 °C, which is comparable to that for the classic ambipolar LiTFSI/PEO SPEs at the same temperature. These outstanding properties of the LiPSsTFSI/PEO blended polymer electrolyte would make it promising as solid polymer electrolytes for Li batteries.
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