【摘要】 以六氟环氧丙烷二聚体与聚乙二醇(PEG)为原料，三乙胺或碳酸钾为缚酸剂，制备了全氟(2-丙氧基)丙酸聚乙二酯(HFPO-PEG)，与双三氟甲烷磺酸亚胺锂(LiTFSI)组合成锂离子电解质HFPO-PEG/LiTFSI。采用傅里叶变换红外光谱表征了电解质的结构，采用Zahner Zennium E型电化学工作站测试了电解质的阻抗、电化学稳定性窗口和计时电流。结果表明：以碳酸钾为缚酸剂，可以获得高产率的HFPO-PEG；HFPO-PEG/LiTFSI[锂盐含量为15%(w)]较PEG/LiTFSI具有更高的电化学稳定性窗口，达到3.5～3.7 V[vs.Li/Li~+(表示金属Li氧化成Li~+)]；当PEG链段为聚乙二醇单甲醚(mPEG)，相对分子质量为200时，HFPO-mPEG200/LiTFSI的锂离子迁移数为0.75。更多还原

【Abstract】 Hexafluoropropylene oxide dimer and polyethylene glycol(PEG) were used as raw materials，triethylamine or potassium carbonate as acid binding agents，to prepare perfluoro(2-propoxy) propionate polyethylene glycol ester(HFPO-PEG)，which was configured with lithium bistrifluoromethanesulfonate (LiTFSI) to be a lithium-ion electrolyte，HFPO-PEG/LiTFSI.The structure of the product was characterized byFourier transform infrared spectroscope，and its impedance，electrochemical stability window and chronocurrent were tested by Zahner Zennium E electrochemical workstation.The results show that a high yield of HFPO-PEG can be obtained when potassium carbonate is used as an acid binding agent.HFPO-PEG/LiTFSI in which the mass fraction of lithium salt is 15% has a higher electrochemical stability window than PEG/LiTFSI，reaching 3.5-3.7 V(vs.Li/Li~+).The lithium-ion migration number of HFPO-mPEG200/LiTFSI is 0.75 when the PEG segment is polyethylene glycol monomethyl ether(mPEG) whose molecular weight is 200.更多还原