• Proceedings of the Materials Research Society of Korea Conference
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• 1998.08a
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• pp.54.2-54
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• 1998

• Macromolecular Research
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• v.17 no.3
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• pp.203-206
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• 2009

• Proceedings of the Materials Research Society of Korea Conference
• /
• 1998.08a
• /
• pp.53.2-53
• /
• 1998

• Macromolecular Research
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• v.17 no.4
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• pp.276-279
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• 2009

• Proceedings of the Materials Research Society of Korea Conference
• /
• 1998.08a
• /
• pp.56.1-56
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• 1998

• Polymer Science and Technology
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• v.8 no.5
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• pp.635-643
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• 1997

• Journal of Electrochemical Science and Technology
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• v.10 no.2
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• pp.250-255
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• 2019

Poly(ethylene oxide) (PEO)-based solid polymer electrolytes (SPEs) show promise for improving the lithium ion battery safety. However, due to oxidation of the PEO group and corrosion of the Al current collector, PEO-based SPEs have not previously been effective for use in $LiCoO_2$ (LCO) cathode materials at room temperature. In this paper, a semi-interpenetrating polymer network (semi-IPN) PEO-based SPE was applied to examine the performance of a LCO/SPE/Li metal cell at different voltage ranges. The results indicate that the SPE can be applied to LCO-based lithium polymer batteries with high electrochemical performance. By using a carbon-coated aluminum current collector, the Al corrosion was mostly suppressed during cycling, resulting in improvement of the cell cycle stability.

• Proceedings of the Materials Research Society of Korea Conference
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• 1998.08a
• /
• pp.148.2-148
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• 1998

• Bulletin of the Korean Chemical Society
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• v.25 no.4
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• pp.443-444
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• 2004

• Bulletin of the Korean Chemical Society
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• v.33 no.5
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• pp.1451-1456
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• 2012

A novel tetrathiafulvalene (TTF)-based main-chain polymer (6TTF-polymer) was successfully synthesized via a condensation polymerization between a newly synthesized dihydroxy TTF derivative and a malonyl chloride, and its chemical structure was characterized by spectroscopic techniques. Molecular weight of the 6TTF-polymer (9,030 g/mol by gel permeation chromatography) was large enough to form the ductile film. The electrochemical and optical properties of the 6TTF-polymer were further estimated by cyclic voltammetry, ultraviolet and photoluminescence spectroscopes. The highest occupied molecular orbital level ($E_{HOMO}$=-4.79 eV) and band-gap energy ($E_g$=1.91 eV) of the 6TTF-polymer suggested that TTF-based polymer could act as a good electron donating material for the optoelectronic applications.