Photoelectrochemical Converision with $SrTiO_3$ Ceramic Electrodes

$SrTiO_3$ 세라믹 전극에 의한 광전기 화학변환

  • 윤기현 (연세대학교 요업공학과) ;
  • 김태희 (연세대학교 요업공학과)
  • Published : 1985.03.01

Abstract

The phtoelectrochemical porperties of $Nb_2O_5$, $Sb_2O_3$ and $V_2O_5$ doped and pure $SrTiO_3$ ceramic electodes were investigated. Shapes of I-V and I-λ characteristics of the pure $SrTiO_3$ ceramic electrode are similar to those of SrTiO3 single crystal electorde ; the anodic current strats at -0.9V (vs. Ag/AgCI) in 1 N-NaOH aqueous solution and the photoresponse appears at a wavelength of about 390nm and the quantum efficiency is about 3.5% at wavelength of 390nm under 0.5V vs. Ag/AgCl. Photocurrents of $Nb_2O_5$, $Sb_2O_3$ and $V_2O_5$ doped electrodes and $V_2O_5$ doped ceramic electrode appears at wavelength of 390nm and 500nm respectively.

Keywords

References

  1. Hydrides for energy storage G.G.Libowitz
  2. Nature v.238 Electrochemical photolysis of water at a simiconductor electrodes A. Fujishima;K. Honda
  3. Appl. Phys. Lett. v.28 no.5 Photoelectrolysis of water in cells with SrTiO₃anodes J.G.Marvroides(et al.)
  4. J. Electrochem. Soc. v.125 no.2 Prediction of flatband potentials at semiconductor-electrolyte interfaces from atomic electronegativities M.A.Butler;D.S.Ginlcy
  5. Jpn. J. Appl. Phys. v.23 no.8 Photoeffects in polycrystalline TiO₂electrodes K.H. Yoon;S.O. Yoon
  6. J. Kor. Ceram. Soc. v.20 no.4 Charateristics of TiO₂ceramic electrodes for the photoelectrochemical conversion K.H. Yoon(et al.)
  7. J. Kor. Ceram. Soc. v.21 no.3 Effects of thickness and dopants on the photoelectrochemical conversionin the polycrystalline TiO₂electrodes K.H. Yoon;D.H. Kang
  8. J. Electrochem. Soc. v.128 no.8 Nonstoichiometry in SrTiO₃ N.H. Chan(et al.)
  9. J. Am. Chem. v.28 Formation of point defects in strontium titanate L.C. Walters;R.E. Grace
  10. J. Am. Chem. Soc. v.98 no.10 Strontium titanate photoelectrodes. Efficient photoasisted photoelectrolysis of water at zero applied potential M.S. Wrighton(et al.)
  11. Bull. Chem. Soc. Jpn. v.49 no.2 Photoelectrochemical reaction at SrTiO₃single crystal electrodes T. Watanabe(et al.)
  12. J. Phys. Chem. v.80 no.24 Correlation of photocurrent-voltage curves with flatband potential for stable photoelectrodes for the photoelectrolysis of water J.M. Bolts;M.S. Wrighton
  13. J. Appl. Phys. v.48 no.5 Photoelectrolysis and physical properties of the semiconducting electrode WO₃ M.A. Butler
  14. J. Electrochem. Soc. v.128 no.31 Photoactivity of polycrystalline α-Fe₂O₃electrodes doped with group IV A elements J.H. Kennedy(et al.)
  15. Electrichim. Acta. v.13 The semiconductor/electrolyte interface; potentials, charges and carriers H.U. Hartein
  16. J. Electrochem. Soc. v.127 no.10 Visible light response of polycrystalline TiO₂electrodes Y. Matsumoto(et al.)
  17. J .Electrochem, Soc. v.127 no.7 Photoelectrolysis of water; Photoresponses of Ni, Cr. and Zn-doped polycrystalline TiO₂electrods A. Monnier;J. Augustinski
  18. An introduction to crystal chemistry(2nd ed.) R.C. Evans
  19. J. Electroche. Soc. v.130 no.2 Photoelectrolysis of water under visible light with doped SrTiO electrodes M. Matsumura(et al.)