以N-乙烯基咪唑、溴乙酸甲酯和二（三氟甲基磺酰亚胺）锂（LiTFSI）为原料,采用溶液聚合法制备了聚（1-乙烯基-3-乙酸甲酯基咪唑二（三氟甲基磺酰亚胺））（PMVIm-TFSI）。将其与LiTFSI和聚（甲基丙烯酸甲酯-醋酸乙烯酯）（P（MMA-VAc））共混制得了不同质量比的聚合物电解质。核磁共振（1 HNMR）、红外光谱（FT-IR）、示差扫描量热计（DSC）、热重分析（TGA）、X射线衍射（XRD）、扫描电镜（SEM）、交流阻抗（AC impedance）等对电解质的测试结果表明,PMVIm-TFSI掺杂到P（MMA-VAc）和LiTFSI组成的电解质中后其电导率得到了极大的改善,30℃下最高可达4.71×10-4S/cm,同时热稳定性也得到了极大的提高。此外,该共混电解质（透过率≥90%）还可以运用到电致变色器件（ECD）导电离子材料中,也显示出了优良的电化学性能。
N-vinylimidazole,methyl bromoacetate and lithium trifluoromethanesulfonimide（LiTFSI） being the materials,poly（methyl 2-（3-vinylimidazolidin-1-yl） acetate trifluoromethanesulfonimide（PMVIm-TFSI） was synthesized by solution polymerization.Different composition of polymer electrolytes were prepared by blending PMVIm-TFSI with LiTFSI and poly（methyl methacrylate-co-vinyl acetate）（P（MMA-VAc））.1H NMR,FT-IR,DSC,TGA,XRD,SEM and AC impedance results revealed that when PMVIm-TFSI was added into polymer electrolytes consisting of P（MMA-VAc）/LiTFSI,the thermal stability and ionic conductivity improved significantly,the maximum of which is 4.71×10-4S/cm at 30℃.Moreover,P（MMA-VAc）/PMVIm-TFSI/LiTFSI electrolyte membrane（transmittance≥90%） can be used as the ion-conductive layer material for electrochromic devices（ECDs）,which revealed excellent electrochromic performance.
参考文献
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| [2] | 杨道均,傅相锴,龚永锋.P（VAc-MMA）为基体的聚合物电解质研究[J].化学学报,2008(08):975-979. |
| [3] | Baskaran R;Selvasekarapandian S;Kuwata N;Kawamura J;Hattori T .Conductivity and thermal studies of blend polymer electrolytes based on PVAc-PMMA[J].Solid state ionics,2006(26/32):2679-2682. |
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