Development of a Miniaturized Electrochemical Sensor for Ionic Electrochemical Potential Mapping

이온의 전기화학 준위 분포를 재기위한 미세 센서의 개발

  • 유한일 (서울대학교 무기재료공학과) ;
  • 한진우 (서울대학교 무기재료공학과)
  • Published : 1992.09.01

Abstract

For the ultimate purpose of mapping, with a high precision, the local electrochemical potentials of an ionic carrier in nonisothermal conditions, an ionic probe for Ag+ ions, Pt/Ag/AgI, has been miniaturized to a tip size of 20∼30$\mu\textrm{m}$, by an electrochemical technique combined with gas (I2)/solid (Ag) reaction, and its performance checked by measuring the partial electronic and ionic conductivities of Ag2S from the ion and electron blocking cells, Ag/Ag2S/Pt and Ag/Ag2S/AgI/Ag, respectively. The results have firmly confirmed that the miniaturzed probe function quite validly and be very promising.

Keywords

References

  1. Proc. International Committee for Thermodynamics and Kinetics of Electrochemistry Lodon Galvanic Cells with Solid Electrolytes Involving Ionic and Electronic Conduction C. Wagner
  2. Transport in Nonstoichiometric Compounds Concentration Distribution for Diffusion in a Temperature Gradient H-I. Yoo;B.J. Wuensch;G. Simkovich(Ed.);V.S. Stubican(Ed.)
  3. Thermodynamics of Irreversible Processes S.R. de Groot
  4. Solid State Ionics v.51 Investigation of Metal Transport across $AgI/Ag_2S$ Interface with Miniaturized Solid State Galvanic Cell H. Schmalzried;M. Ullrich;H. Wysk
  5. Progr. Solid State Chem. v.10 Equations for Transport in Soild Oxides and Sulfides of Transition Metals C. Wagner
  6. J. Phys. Soc. Japan v.10 no.9 On the Polarization of Silver Sulfide S. Miyatani
  7. Phys. Stat. Sol. v.(a)41 Transport Studies on Superionic Conductors K. Shahi