Characterization of triblock copolymer thin films complexed lithium salt

Characterization of triblock copolymer thin films complexed lithium salt
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Lithium ion conducting polymer electrolytes have both technological and scientific interest due to their potential applications in solid state lithium ion batteries. Especially Poly(ethylene oxide) (PEO) is one of the most promising solid polymer electrolytes (SPE) due to its flexible molecular chain structure and the ability to dissolve salts, which ensures a high ionic mobility. There is a growing interest in the use of microphase-separated block copolymers as electrolytes in batteries and fuel cells. The use of block copolymers enables the creation of well-defined, optimized pathways for ion transport. A polystyrene-block-poly(ethyleneoxide) (PS-b-PEO), polystyrene- block- poly-2-vinylpyridine (PS-b-P2VP) and polystyrene-block-poly-2- vinylpyridine-block-polyethylene oxide (PS-b-P2VP-b-PEO) was used as a structure directing agent to pattern active material into nanostructure. Nanostructures prepared in this manner in the solid polymer electrolyte in lithium batteries, if applicable, with a lightweight and flexibility will be able to maximize efficiency.
1. Introduction 1 2. Experimentals 4 2.1. Materials 4 2.2. Film preparation 4 2.2.1 Block copolymer thin films 4 2.2.2 Preparation of lithium doped thin films 4 2.2.3 Preparation of the solid electrolyte cell 5 2.3. characterization 5 2.3.1 Atomic force microscopy (AFM) 5 2.3.2 Fourier transform infrared spectroscopy (FT-IR) 5 2.3.3 Impedance measurement 6 2.3.4 Impedance measurement 6 3. Results and Discussion 8 3.1 Complexation with lithium salt 8 3.2 Morphology of the block copolymer complexed with lithium salt 10 3.3 Conductivity of the block copolymer thin fims 23 4. Conclusion 28 5. Reference 29
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College of Engineering(공과대학) > Applied Organic Materials Engineering (유기응용재료공학) > Theses(유기응용재료공학 석박사 학위논문)
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