Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
권호 표지

Measurement of Formation Free Energy of $Y_2Cu_2O_5$ by EMF Method

EMF 방법에 의한 $Y_2Cu_2O_5$의 생성자유에너지 측정

  • 김수권 (한전기술연구원 전력연구실 연료전지팀)
  • Published : 1995.09.01
Download PDF
⟨ Previous Next ⟩

Abstract

The formation free energy of Y2Cu2O5 was measured by the partial ion exchanged (Cu2+, Na+)-$\beta$/$\beta$"-Al2O3 as solid state electrolyte. The formation cell was built as follows: Pt(O2)/Y2Cu2O5＋Y2O3//(Cu2+, Na+)-$\beta$/$\beta$"-Al2O3//CuO/(O2)Pt The virtual formation formation formula, and the calculated formation free energy of Y2Cu2O5 as a function of temperature are as follows: 2CuO＋Y2O3=Y2Cu2O5 ΔfG0/kJ.mol-1=13.19-16.25*10-3T/K.5*10-3T/K.

Keywords

References

  1. Z. Metallkde v.Bd.64 Experimentelle methoden zur thermodynamik der metall and Iegierungen. I K.L. Komarek
  2. Z. Phys. v.B64 J.G. Bednorz;K.A. Muller
  3. Advanced Ceramic Meterials;Special Issue, Cramic Superconductors v.2 no.3B Phase equilibria and crystal chemistry in the system Ba-Y-Cu-O R.S. Roth;K.L. Davis;J.R. Dennis
  4. Thermochimca Acua v.136 Phase diagram of the pseudibinary $Ba-CuO_2-YBa_2Cu_2O_6.5-YCuO_2.5$system M. Nevriva;E. Pollert;J. Sestak;L. Matcjkova;A. Triska
  5. J Chem. Soc. Datton Trans v.1061-1066 Oxide chemstry Part II. Ternary oxides containing copper in oxidation stater -I, -II, -III, -IV M. Arjomand;D.J. Machin
  6. Russ. J Phy. Chem. v.50 no.1267-1268 The synthesis of a solid electrolyte with zinc ion conductivity and its application in galvanic cells T.Z. Komm;Y.D. Tretyakov;A.R. Kaul
  7. Electrochimica Acta v.26 Solid oxide galvanic cells involving exchanged beta-alumina electrolyte G. Rog;S. Kozinski;A.K. Rog
  8. Electrochimica Acta v.30 Zinc sodium and nickel sodium beta-polyaluminates, preparation, properties and application to the solid oxid galvanic cells G. Rog;A.K. Rog
  9. Trans IMM(Institution of Mining and Metallurgy) v.88 Determination of activity of copper in liquid copper-tin alloys by use of copper beta-alumina J.A. Little;D.J. Fray
  10. Z. Metallkde v.71 EMF messung and Ag-Au-Legierungen unter verwendung von Ag β-Aluminat H. Fischbach
  11. J. Electrochem. Soc. v.135 Electromotive force measurements in molten Rb-Bi alloys with a rubidium β-alumina electrolyte A. Petric;A.D. Pelton
  12. J. Chem. Thermodynamics v.23 Determination of the activities in the solid solutions {xMnO+(1-x)CaO} by a solid-electrolyte galvanic cell in the temperature range 900K to 1100K G. Rog;A.K. Rog;K. Zakula;W. Pycior
  13. Dissertation RWTH Aachen Herstellung und eigenschften von von katiomschleitendem β/β〃-Al₂O₃sowie seine anwendung als elektrolyt in galvanischen ketten zur bestimmung der freien enthalpie S.K. Kim
  14. J. Corros Sic. Soc. of Korea v.24 Messung der freien mischungsenthalpie der Na₂O-MoO₃-schmelze durch EMK-methode S.K. Kim;F. Muller
  15. J. Solid Stat. Chem v.17 An electrochemical study of high-temperature stability of compounds between the rare earths and copper oxide Y.D. Tretyakov;A.R. Kaul;N.V. Makukin
  16. J. Mat. Sci. Lett v.7 Thermodynamic stabillity of $Y_2Cu_2O_5$ the E.M.F method R. Pankajavalli;O.M. Sreedharan
  17. Private communication Thermodynamic stability of the Y-Ba-Cu oxide superconductor O.A. Musbach;Y.A. Chang
  18. Chemistry of materials v.1 Gibbs energies of formation of CuYO₂and Cu₂Y₂O5 and phase relations on the system Cu-Y-O G.M. Kale;K.T. Jacob
  19. J. Lesscommon Metals v.161 Standard Gibbs free energy of formation of superconducting $YBa_2Cu_3O_x$ and related compounds on the Y₂O₃-BaO-CuO system Z. Fan;C. Ji;Z. Zhao
  20. J. Jpn Inst. Metals v.54 Standaed Gibbs free energy changes for the formation of$ YBa_2Cu_3O_{6.5+x}$, Y_2BaCuO_5$ and Y₂Cu₂O5 from Y₂O₃, BaCO₃and CuO₂ R. Shimpo;Y. Nakamura
  21. J. Mat Sci. v.26 Standard Gibbs energies of formation of $BaCuO_2$,$ Y_2Cu_2O_5$ and$ Y_2BaCuO_5$ A.M. Azad;O.M. Sreedharan;K.T. Jacob
  22. Proc 12th All-Union Conf. Chemical Thermodynamics (Gorky);Pure & Apppl. Chem. v.1;63 Thermodynamics of high-Tc superconductors J.J. Skpolis;S.V. Kiydenko;M.L. Kovba;S.F. Pashin;V.B. Lazarev(et al.)
  23. J. less-Common Metals v.144 Thermodynamic treatment of the CuO-Y₂O₃binary system G.H. Rao;J.K. Liang;Z.Y. Qiao
  24. Mat. Res. Bull. v.24 Stability fields in the system Y-Cu-O and thermochemical data of$ Y_2Cu_2O_5$ and YCuO₂ U. Wiesner;G. Krabbes;M. Ritshel
  25. J. Amer. Ceram. Soc. v.72 Calculation of phase diagram for the $YO_1.5-BaO-CuO_x$ system B.J. Lee;D.N. Lee
  26. Dissertation RWTH Aachen Thermochemische untersuchungen im system Y-Ba-Cu-O und semen randsystemen A. Mohamad