Electrochemical characteristics of the plasticized polymer electrolytes based on the modified polyacrylonitrile개질화된 폴리아크릴로니트릴을 기초로 한 가소화된 고분자 전해질의 전기화학적 특성

Cited 0 time in webofscience Cited 0 time in scopus
  • Hit : 441
  • Download : 0
The goal of the research in this thesis is to extend the understanding of the physics involved in the electrochemical characteristics of the polymer electrolytes and to develop the noble polymer electrolytes applicable to electronic devices. Many types of ionically conducting polymers, generally classified as polymer electrolytes, have been developed and characterized in recent years. Special interest today is focused on polymer systems having high ionic conductivity at ambient and subambient tempertatures, since they may find unique applications such as rechargeable lithium batteries, electrochromic devices, and chemical sensors. Among the most promising examples are plasticized polymer electrolytes obtained by the immobilization of liquid solutions of lithium salts in a polymer matrix. Among these plasticized polymer electrolytes, the polyacrylonitrile(PAN) based polymer electrolytes have been studied by many researchers due to their high room temperature ionic conductivity in order of $10^{-3}$S/cm, good dimensional stability, and electrochemical stability affects the cyclability of the rechargeable lithium battery and thus, puts restriction on the application of the PAN based polymer electrolytes in the lithium polymer batteries. These considerations motivated us to develop plasticized polymer electrolytes based on modified PAN with both high ionic conductivity and interfacial stability. In chapter 2 and chapter 3, the polymer electrolytes composed of poly(acrylonitrile-co-Li methacrylate)(P(AN-co-LiMA),PAN ionomer), ethylene carbonate(EC), and LiClO4 were prepared. The ionic conductivity and the interfacial behavior of the PAN ionomer based plasticized polymer electrolytes were also investigated and compared with those of the PAN based plasticized polymer electrolytes. The ion groups in the P(AN-co-LiMA) were found to prevent EC from crystallization through their ion-dipole interactions with the polar groups in the EC. This suppression of the EC crystalliz...
Advisors
Park, Jung-Kiresearcher박정기researcher
Description
한국과학기술원 : 화학공학과,
Publisher
한국과학기술원
Issue Date
2000
Identifier
157720/325007 / 000965264
Language
eng
Description

학위논문(박사) - 한국과학기술원 : 화학공학과, 2000.2, [ xiii, 126 p. ]

Keywords

Ion conductivity; PAN ionomer; Lithium polymer battery; Polymer electrolyte; Interfacial resistance; 계면 저항; 이온 전도도; PAN 이오노머; 리튬 고분자 전지; 고분자전해질

URI
http://hdl.handle.net/10203/28832
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=157720&flag=dissertation
Appears in Collection
CBE-Theses_Ph.D.(박사논문)
Files in This Item
There are no files associated with this item.

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0