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全氟(2-丙氧基)丙酸聚乙二酯/LiTFSI电解质的制备及其性能
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作者 冯裕智 刘沛石 +2 位作者 裴一博 唐旭东 毛占伟 《合成树脂及塑料》 CAS 北大核心 2022年第4期6-12,17,共8页
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... 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。 展开更多
关键词 六氟环氧丙烷二聚体 聚乙二醇 锂离子电解质 锂离子迁移数 电化学稳定性窗口
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Recent advances in ionic liquid-based electrochemical biosensors 被引量:5
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作者 王晓琳 郝京诚 《Science Bulletin》 SCIE EI CAS CSCD 2016年第16期1281-1295,共15页
Ionic liquids (ILs) have been generally described as molten salts which are composed of asymmetric cations and anions. They exist in liquid state below 100 ℃. Both ILs and their composite materials have been widely... Ionic liquids (ILs) have been generally described as molten salts which are composed of asymmetric cations and anions. They exist in liquid state below 100 ℃. Both ILs and their composite materials have been widely used in various fields. Attributed to the outstanding properties including the thermal and chemical stabilities, the negligible volatility, the high ionic conductivity, the wide electrochemical window, and the easy design in the construction, ILs have been applied in electrochemical applications including the electrocatalysis, the electrosynthesis, the electrodeposition, the electrochamical devices and sensors. In addition to the application in electrochemical sensors, ILs have also been used in biosensors because of their biocompatibiciy. Here, we review the recent devel- opments for the applicaitons of ILs in electrochemical sensors and biosensors, including the corresponding properties of ILs suitable for electrochemical sensors. Electrochemical biosensors constructed by numorous composites are the emphasis in the review. 展开更多
关键词 Ionic liquids Electrochemical sensors Biosensors
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