硫酸溶液中Ti/SnO_2+Sb_2O_3/PbO_2阳极在电解过程中的结构变化及失活行为  

STRUCTURE CHANGE AND FAILURE BEHAVIOR OF Ti/SnO_2+Sb_2O_3/PbO_2 ANODES DURING ELECTROLYSIS PROCESS IN H_2SO_4 SOLUTION

作　　者：王雅琼[1] 童宏扬[1] 许文林[1] 

机构地区：[1]扬州大学化学化工学院,江苏扬州225002

出　　处：《化工学报》2004年第9期1560-1563,共4页CIESC Journal

基　　金：江苏省高校自然科学研究计划资助项目(No 0 3KJB5 3 0 164 );国家自然科学基金资助项目 (No 2 0 1760 47)~~

摘　　要：The structure change and failure behavior of Ti/SnO 2+Sb 2O 3/PbO 2 anodes were studied during the electrolysis process in 1.0 mol·L -1 H 2SO 4 solution.The morphology,microstructure and the electrochemical behavior of the anodes in the different electrolysis processes were examined by means of XRD,SEM,CV and EIS.The variation of cell potential went through three stages:“instability”,“stability”and“rapid rising”in the whole electrolysis process.The morphology,microstructure and the electrochemical behavior of the anodes changed obviously in these stages.In the later stage of the electrolysis process,the passivation film of TiO 2 between the Ti substrate and the oxide coating was formed and PbO 2 coating peeled from the electrode,which caused the inactivation of electrodes.The structure change and failure behavior of Ti/SnO2+Sb2O3/PbO2 anodes were studied during the electrolysis process in 1.0 mol&middotL-1H2SO4 solution. The morphology, microstructure and the electrochemical behavior of the anodes in the different electrolysis processes were examined by means of XRD, SEM, CV and EIS. The variation of cell potential went through three stages: instability, stability and rapid rising in the whole electrolysis process. The morphology, microstructure and the electrochemical behavior of the anodes changed obviously in these stages. In the later stage of the electrolysis process, the passivation film of TiO2 between the Ti substrate and the oxide coating was formed and PbO2 coating peeled from the electrode, which caused the inactivation of electrodes.

关 键 词：二氧化铅 阳极 电解 

分 类 号：TQ151.1[化学工程—电化学工业] O646.5[理学—物理化学]