Pb—Ag—Ca新型阳极在电解液中电化学极化及表面状态变化  

Electrochemical Polarization and Change of surface state formPb—Ag—Ca new Alloy Anode in Electrolyte Solution

作　　者：杨生恕[1] 俞征[1] 

机构地区：[1]贵州大学化学系,贵阳550025

出　　处：《贵州大学学报（自然科学版）》1996年第3期154-160,共7页Journal of Guizhou University:Natural Sciences

基　　金：贵州省科委自然科学基金;贵州省教委自然科学基金

摘　　要：测定了未经电解使用的PAC阳极(以PAC(1)代之)与已经电解使用的PAC阳极(以PAC(2)代之)分别在20%H_2SO_4(ag)(以(1)代之)与lMot/L M_nSO_4—20%H_2SO_4(aq)(以(2)代之)中的极化曲线;及O_2分别在上述二电极上(分别在溶液(1)(2)中)的过电位ηO_2;对电极表面状态随ψ值的变化,作了热力学分析与χ衍射图谱测定;经仪器自动检索确定了电极表面生成的物相,与热力学分析一致.The passivation behavior and O_2 over —potential ηo_2 form PAC electrode(PAC(1)(2)) in the 20% H_2SO_4 and 1 Mol/L MnSO_4 —20% H_2SO_4 was determination respectively by analyzing potential—Controlling stationary Polarization Curve. Thermodynamic analysis for change of surface state of PAC Anode with φ is discussed and matter phase form at the electrode surface by X —ray diffration was determinatin that data is unanimity with thermodymic analysis.

关 键 词：极化曲线 阳极 PAC阳极 电解液 电化学 表面状态 

分 类 号：O646.54[理学—物理化学]