为探讨氧化物阳极的失效机制,采用热分解法制备了钛基IrO2-Ta2O5氧化物阳极,利用扫描电镜(SEM)、循环伏安测试(CV)、电化学阻抗(EIS)监测了阳极在硫酸溶液的强化电解过程中表面形貌和电化学性能的变化.结果表明,氧化物阳极的失效并非由氧化物涂层本身失去电催化活性所致,而是由于工作过程中基体金属腐蚀钝化、失去导电载体作用而使涂层大面积剥离所致.
参考文献
| [1] | Kwang-Wook Kim;Eil-Hee Lee;Jung-Sik Kim .Material and Organic Destruction Characteristics of High Temperature-Sintered RuO_2 and IrO_2Electrodes[J].Journal of the Electrochemical Society,2002(12):D187-D192. |
| [2] | Rossi A.;Boodts JFC. .Ir-based oxide electrodes: oxygen evolution reaction from mixed solvents[J].Journal of Applied Electrochemistry,2002(7):735-741. |
| [3] | Kulandaisamy S;Rethinaraj J P;Chockalingam S C.Performance of catalytically activated anodes in the electrowinning of metals[J].Journal of Applied Electrochemistry,1997(27):579-583. |
| [4] | Morimitsu M.;Matsunaga M.;Otogawa R.;Tamura H. .Polarization behaviour and lifetime of IrO2-Ta2O5-SnO2/Ti anodes in p-phenolsulfonic acid solutions for tin plating[J].Journal of Applied Electrochemistry,2000(4):511-514. |
| [5] | 王廷勇,许立坤,陈光章.铱钽钛金属氧化物阳极的电化学特性[J].电化学,2000(01):72-77. |
| [6] | Comninellis C H;Vercesi G P.Characterization of DSA-type oxygen evolving electrodes: choice of a coating[J].Journal of Applied Electrochemistry,1991(21):335-345. |
| [7] | Krysa J.;Mraz R.;Rousar I.;Kule L. .EFFECT OF COATING THICKNESS AND SURFACE TREATMENT OF TITANIUM ON THE PROPERTIES OF IRO2-TA2O5 ANODES[J].Journal of Applied Electrochemistry,1996(10):999-1005. |
| [8] | ZHANG Meng-Meng,LIN Ji-Yun,CHEN Kang-ning.Iridium-Tantalum Oxide Anode Coatings[J].无机材料学报,1999(02):251. |
| [9] | 张帆,李海涛.二氧化铱与非晶态钽氧化物涂层电极材料的研究[J].广东有色金属学报,2000(01):41-46. |
| [10] | 胡吉明,孟惠民,张鉴清,曹楚南.Ti基IrO2+Ta2O5阳极在H2SO4溶液中的电解时效行为[J].物理化学学报,2002(01):14-20. |
| [11] | Lassali T A F;Boodts J F C;Bulhoes L O S.Charging processes and electrocatalytic properties of IrO2/TiO2/SnO2 oxide films investigated by in situ AC impedance[J].Electrochimica Acta,1999(44):4203-4216. |
| [12] | 张琼,彭俊华,蔡传荣.钛阳极涂层剥落失效机理初探[J].电子显微学报,2001(04):410-411. |
| [13] | 张琼,蔡传荣.钛阳极涂层溶蚀失效的研究[J].电子显微学报,2003(06):624-625. |
| [14] | 张文华,胡正前,马晋.俄罗斯微弧氧化技术的研究进展[J].世界有色金属,2004(01):43-46. |
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