Pourbaix Diagrams(2) S.J.T.U. Phase Transformation and Applications E=1.229-0.05916pH 02+4H++4e>2H20 1.5 02 0.5 H20 -1 01-2、345678 o 101112131415 △G=-zFE pH=-log10()=-log1o[H+] .5 H2 pH→ Figure 6.3 Pourbaix diagram for water,hydrogen,and oxygen;Pand Po=1 atm. SJ IU Inermoaynamics or Materiais Spring∠JUbX.J.JIn Lecture 11 Electrochemistry llPhase Transformation and Applications S. J. T. U. SJTU Thermodynamics of Materials Springl 2006 © X. J. Jin Lecture 11 Electrochemistry II Pourbaix Diagrams (2) E = − 05916.0229.1 pH 2 →++ 244 2OHeHO −+ Δ = −zFEG ][log)(log10 10 + pH −= + −= H H α