Membrane Journal (멤브레인)

The Membrane Society of Korea (한국막학회)
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A Study on the Organic/inorganic Composite Electrolyte Membranes for Dye Sensitized Solar Cell

염료감응형 태양전지를 위한 유기/무기 복합 전해질막에 대한 연구

  • Koo, Ja-Kyung (Department of Applied Chemical Engineering, Korea University of Technology and Education) ;
  • Choi, Mi-Jung (Department of Applied Chemical Engineering, Korea University of Technology and Education) ;
  • Shin, Chun-Hwa (Department of Applied Chemical Engineering, Korea University of Technology and Education) ;
  • Kang, Tae-Un (Department of Applied Chemical Engineering, Korea University of Technology and Education) ;
  • Cho, Nam-Jun (Department of Applied Chemical Engineering, Korea University of Technology and Education)
  • 구자경 (한국기술교육대학교 응용화학공학과) ;
  • 최미정 (한국기술교육대학교 응용화학공학과) ;
  • 신춘화 (한국기술교육대학교 응용화학공학과) ;
  • 강태윤 (한국기술교육대학교 응용화학공학과) ;
  • 조남준 (한국기술교육대학교 응용화학공학과)
  • Published : 2008.12.30
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Abstract

Organic/inorganic composite electrolyte membranes were prepared for dye sensitized solar cell (DSSC). Polyethylene Glycol (PEG)s with various molecular weight (400, 600, 1,500 and 3,400) was ethoxysilated to fabricate organic/inorganic composite materials through sol-gel processes. The electrolyte membranes were produced by doping the composite materials with NaI and $I_2$, and their ionic conducting behavior was investigated. The ionic conductivity of the composite electrolyte was highly affected by the PEG molecular weight, and the highest conductivity was shown by the composite membrane prepared with PEG with the molecular weight of 1,500. The composite electrolyte membranes showed considerable improvement of ionic conductivity. Compared to PEO electrolyte membranes, the composite electrolyte membrane prepared by PEG, MW 1,500, showed much higher ionic conductivity.

염료감응형 태양전지에 사용되기 위한 유기/무기 복합소재를 합성하였다. 다양한 분자량(400, 600, 1,500, 3,400)의 polyethylene glycol의 양 끝단을 ethoxysilane기로 치환하여 전구체를 제조하였으며, 전구체의 졸-겔 반응을 통하여 복합소재를 합성하였다. 전해질막은 유기/무기 복합소재를 NaI 및 $I_2$로 도핑하여 제조하였으며, 제조한 전해질막의 이온전도 특성을 측정하였다. 전해질막의 이온전도도는 원료로 사용한 PEG에 크게 영향을 받았으며 가장 높은 이온전도도는 분자량 1,500의 PEG를 원료로 사용한 전해질 막에서 볼 수 있었다. 복합전해질막은 전도도에 있어서 큰 향상을 보였다. PEO 전해질막에 비하여 분자량 1,500의 PEC로 제조한 복합전해질막은 월등하게 높은 이온전도도를 보였다.

Keywords

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