电解质
材料科学
聚合物
锂(药物)
电导率
聚合物电解质
导电聚合物
化学工程
离子电导率
纳米技术
电池(电)
快离子导体
复合材料
电极
化学
物理化学
工程类
物理
内分泌学
功率(物理)
医学
量子力学
标识
DOI:10.1002/(sici)1521-4095(199804)10:6<439::aid-adma439>3.0.co;2-i
摘要
The motivation for lithium battery development and a discussion of ion conducting polymers as separators begin this review, which includes a short history of polymer electrolyte research, a summary of the major parameters that determine lithium ion transport in polymer matrices, and consequences for solid polymer electrolyte development. Two major strategies for the application of ion conducting polymers as separators in lithium batteries are identified: One is the development of highly conductive materials via the crosslinking of mobile chains to form networks, which are then swollen by lithium salt solutions (“gel electrolytes”). The other is the construction of solid polymer electrolytes (SPEs) with supramolecular architectures, which intrinsically give rise to much enhanced mechanical strength. These materials as yet exhibit relatively common conductivity levels but may be applied as very thin films. Molecular composites based on poly(p-phenylene)- (PPP)-reinforced SPEs are a striking example of this direction. Neither strategy has as yet led to a “breakthrough” with respect to technical application, at least not for electrically powered vehicles. Before being used as separators, the gel electrolytes must be strengthened, while the molecularly reinforced solid polymer electrolytes must demonstrate improved conductivity.
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