共查询到19条相似文献,搜索用时 62 毫秒
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离子液体以其高稳定性、高导电性等特有的优点成为众多领域的研究热点。本文综述了离子液体聚合物电解质在染料敏化太阳能电池中的应用,详细讨论了离子液体聚合物电解质的复合方法,并比较了复合前后电解质的电导率情况;评论了复合离子液体聚合物电解质在多方面的应用,并对其发展方向进行了展望。 相似文献
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离子液体以其高稳定性、高导电性等特有的优点成为众多领域的研究热点。本文综述了离子液体聚合物电解质在染料敏化太阳能电池中的应用,详细讨论了离子液体聚合物电解质的复合方法,并比较了复合前后电解质的电导率情况;评论了复合离子液体聚合物电解质在多方面的应用,并对其发展方向进行了展望。 相似文献
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离子液体/聚合物电解质研究进展 总被引:1,自引:0,他引:1
综述了离子液体/聚合物电解质最新的研究进展--在有机高分子上引入离子液体合成聚合物电解质的几种主要方法.并介绍了合成的聚合物电解质的一些主要性质及其在催化、导电材料等方面的应用前景. 相似文献
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锂电池用PEO基固态聚合物电解质研究进展及应用 总被引:1,自引:0,他引:1
介绍了锂电池用聚氧化乙烯(PEO)基固态聚合物电解质的研究进展,论述了国内外在PEO改性、锂盐改进和制备PEO-无机复合聚合物电解质等三方面在提高其电导率、电化学稳定窗口和离子迁移数等性能进行的研究,综述了PEO基聚合物电解质的应用情况. 相似文献
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离子液体聚合物是一种新型的聚合物材料,近些年来取得了迅速发展。本文主要介绍了离子液体聚合物的合成方法,并综述了离子液体聚合物在聚电解质、吸附及分离材料、催化剂等方面的应用研究进展。 相似文献
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Ziqiang Xu Wenlei Li Zhi Chen Dongxia Wang Tingting Feng Hanna Potapenko Mengqiang Wu 《大分子材料与工程》2019,304(1)
A novel porous membrane of chemically modified polyvinyl butyral (mPVB), with improved thermal properties and chemical stability for lithium ion battery applications, is successfully synthesized by utilizing the chain extension reaction of the OH units from PVB. The porous mPVB membranes are obtained via the tape casting and phase inversion method. The corresponding gel polymer electrolyte (GPE) is achieved by immersing the as‐prepared membranes in the liquid electrolyte. The electrochemical performances of the GPE show that the mPVB membranes have the features of good uniformity, high porosity ( ≈ 90%), great thermal stability, and high mechanical strength. Moreover, the GPE exhibits good chemical stability, a wide electrochemical window, as well as high ionic conductivity ( ≈ 1.21 × 10?3 S cm?1). A test of a Li/GPE/LiFePO4 battery cell shows a capacity of 147.7 mAh g?1 and excellent cycling stability, demonstrating the great potential of the mPVB‐based GPE for lithium ion battery applications. 相似文献
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聚合物锂离子电池的研究进展 总被引:3,自引:0,他引:3
介绍了聚合物电解质的开发过程、分类、导电机理和研究方法以及聚合物电解质存在的问题.综述分析了提高导电聚合物电解质离子电导率的途径,并讨论了今后聚合物电解质的发展方向. 相似文献
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电解液对锂离子电池性能的影响 总被引:1,自引:0,他引:1
锂离子电池的性能与电解液有着密切的关系。电解液的组成主要是:有机溶剂、锂盐、添加剂。本文综述了电解液组成对锂离子电池电化学性能的影响规律;探讨了电解液量对锂离子电池性能的影响以及不同正极材料锂离子电池对电解液量的需求。 相似文献
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一种新型聚醚离子液体电解质的制备和表征 总被引:1,自引:0,他引:1
以端羟基聚环氧氯丙烷(PECH)、N-甲基咪唑(NMIM)为原料,制备了一种新型的含端羟基的聚醚离子液体(NMIM-g-PECH)。考察了反应温度、反应配比、反应时间、接枝PECH的数均相对分子质量对反应接枝率的影响;用红外光谱和核磁共振氢谱对聚醚离子液体进行了结构表征;对聚醚离子液体的溶解性、电化学稳定性和离子导电性进行了分析。结果表明合成聚醚离子液体的较优工艺条件为:反应时间10h,反应温度40℃,n(PECH中氯甲基):n(NMIM)=1.0:1.8,PECH的数均相对分子质量为1000,此条件下反应接枝率可达82.3%;所得聚醚离子液体具有良好溶解性、电化学稳定性、离子电导性能,质量分数为5%的这种聚醚离子液体甲醇溶液室温电导率可达2.40×10-3S/cm。 相似文献
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Ionic discotic liquid crystals are salts of discotic liquid crystals that may display lyotropic and thermotropic mesomorphism. Columnar structures of π-π stacking ionic discotic liquid crystals function not only as anisotropic organic semiconductors, similar to their neutral analogues, but they may also efficiently conduct ions. This combination of electronic and ionic conduction is only one of several unique properties that these materials may display, but their systematic investigation has been limited because of their often complex synthesis, purification, and characterization. However, a comprehensive account of existing reports on ionic discotic liquid crystals is not straightforward, despite their relatively small number, because publications are scattered across different areas of research, such as liquid crystals, ionic liquids, and ionic self-assembly. This review intends to provide a concise but comprehensive overview of the published work on ionic discotic liquid crystals and related compounds and is expected to stimulate further exploration. Highlighted in this review is the mesomorphism of ionic discotic liquid crystals and its dependence on structural changes, which is also the focus of most reported studies. Particular attention was given to the dependence of mesomorphism on the location and types of the charged groups as these are parameters unique to these compounds. Also described are electronic, optical, and other properties of these materials if reported. 相似文献