화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Materials Research, Vol.25, No.12, 672-677, December, 2015
DOI10.3740/MRSK.2015.25.12.672  Export Citation
염료감응형 태양전지의 비백금 상대전극을 위한 Co가 내재된 Graphitic 다공성 탄소나노섬유
Co-Embedded Graphitic Porous Carbon Nanofibers for Pt-Free Counter Electrode in Dye-Sensitized Solar Cells
안혜란, 강혜린1, 선효정1, 한지호1, 안효진†
  • 서울과학기술대학교 신소재공학과
  • 1용화여자고등학교
Hye Lan An, Hye-Rhin Kang1, Hyo Jeong Sun1, Ji Ho Han1, and Hyo-Jin Ahn†
  • Department of Materials Science and Engineering, Seoul National University of Science and Technology, Seoul 139-743, Korea
  • 1YongHwa Girl’s High School, Seoul 139-827, Korea
E-mail:
Co-embedded graphitic porous carbon nanofibers(Co-GPCNFs) are synthesized by using an electrospinning method. Their morphological, structural, electrochemical, and photovoltaic properties are investigated. To obtain the optimum condition of Co-GPCNFs for dye-sensitized solar cells(DSSCs), the amount of cobalt precursor in an electrospinning solutuion are controlled to be 0 wt%(conventional CNFs), 1 wt%(sample A), and 3 wt%(sample B). Among them, sample B exhibited a high degree of graphitization and porous structure compared to conventional CNFs and sample A, which result in the performance improvement of DSSCs. Therefore, sample B showed a high current density(JSC, 12.88 mA/cm2) and excellent power conversion efficiency(PCE, 5.33 %) than those of conventional CNFs(12.00 mA/cm2, 3.78 %). This result can be explained by combined effects of the increased contact area between the electrode and elecytolyte caused by improved porosity and the increased conductivity caused by the formation of a high degree of graphitization. Thus, the Co-GPCNFs may be used as a promising alternative of Pt-free counter electrode in DSSCs.
Keywords:dye-sensitized solar cells;counter electrode;Pt-free;graphitic porous carbon nanofibers;catalytic properties
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