(1. 蘭州交通大學(xué) 環(huán)境與市政工程學(xué)院，蘭州 730070；
2. 寒旱區(qū)水資源綜合利用教育部工程研究中心，蘭州 730070)
摘 要: 采用溶膠凝膠法在400 ℃條件下制備不同Ce含量的Ti/IrO2+MnO2+CeO2電極，并運(yùn)用SEM、循環(huán)伏安、析氧極化曲線、交流阻抗實(shí)驗(yàn)分析Ce摻雜量對(duì)Ti/IrO2+MnO2+CeO2電極的微觀結(jié)構(gòu)和電化學(xué)性能的影響。結(jié)果表明：各涂層表面都是由帶有裂紋的低洼區(qū)和致密的高隆區(qū)組成，當(dāng)涂層中Ce含量為10%時(shí)，可以明顯改善涂層電極的表面形貌與結(jié)構(gòu)，增加比表面積。在電化學(xué)性能方面，相比不含Ce的IrMn電極，適量CeO2可以提高Ti/IrO2+MnO2+CeO2電極的電催化性能，并在10%的Ce含量時(shí)，Ti/IrO2+MnO2+CeO2電極的電化學(xué)活性達(dá)到最大。
關(guān)鍵字: Ti/IrO2+MnO2+CeO2；溶膠凝膠法；鈦陽極；電化學(xué)活性
（1. School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China;
2. Engineering Research Center for Cold and Arid Regions Water Resource Comprehensive Utilization, Ministry of Education, Lanzhou 730070, China）
Abstract:Ti/IrO2+MnO2+CeO2 electrodes with different Ce contents were prepared by sol-gel method at 400 ℃. The effects of the Ce content to Ti/IrO2+MnO2+CeO2 electrode on microstructure and electrochemical properties was analyzed by SEM, cyclic voltammetry, oxygen evolution polarization curve and AC impedance test. The results show that the surface of each coating is composed of cracked low-lying areas and dense high-long areas, when the content of Ce in the coating is 10%, the surface morphology and structure of the coated electrode can be significantly improved, and the specific surface area increases. In terms of electrochemical performance, moderate CeO2 can increase the electro-catalytic performance of Ti/IrO2+MnO2+CeO2 electrode compared to the Ce-free IrMn electrode, and the Ti/IrO2+MnO2+CeO2 electrode with the Ce content of 10% has the highest electrochemical activity.
Key words: Ti/IrO2+MnO2+CeO2; sol-gel method; titanium anode; electrochemical activity
