【作者】 张璋； 陈步明； 王腾； 黄惠； 郭忠诚； 张小军； 徐瑞东；

【Author】 ZHANG Zhang;CHEN Buming;WANG Teng;HUANG Hui;GUO Zhongcheng;ZHANG Xiaojun;XU Ruidong;Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology;Kunming Hendera Science and Technology Co.,Ltd.;

【机构】 昆明理工大学冶金与能源工程学院； 昆明理工恒达科技股份有限公司；

【摘要】 研究了在Ti/Sb-SnO₂基体上制备Ti/Sb-SnO₂/β-PbO₂电极的过程中,镀液中掺杂Fe³⁺对电极表面形貌、镀层物相组成、电催化活性和电极稳定性的影响,并分析了Fe³⁺作为掺杂物的作用机理。通过扫描电镜（SEM）、X射线衍射（XRD）、阳极极化曲线、循环伏安曲线、交流阻抗谱、强化寿命测试和热震试验对电极性能进行了表征。结果表明,在镀液中掺杂Fe³⁺能获得晶粒较大的PbO₂镀层,并能提升PbO₂镀层的电催化活性和稳定性,在表面镀层中仅含有β-PbO₂晶粒。当镀液中Fe³⁺的掺杂量为0.015mol/L时,电极拥有最好的电化学和物理性能。更多还原

【Abstract】 The Ti/Sb-SnO₂/β-PbO₂ electrode was prepared through electrochemical deposition on a Ti/Sb-SnO₂ substrate.The effects of Fe³⁺ concentration on surface morphology,phase composition,electrocatalytic activity and stability of the PbO₂ electrode were investigated by scanning electron microscopy（SEM）,X-ray diffraction（XRD）,anode polarization curves,cyclic voltammetry curves,electrochemical impedance spectroscopy,accelerated test life and thermal shock test.Results revealed that the average grain size of PbO₂ layer is becoming bigger with doped Fe³⁺ in electrodeposition solution and the electrocatalytic activity and the stability of PbO₂ electrode can be improved.The surface layer of Fe³⁺ doped the Ti/Sb-SnO₂/β-PbO2 electrode is mainly composed of β-PbO₂.The electrode obtained has the best electrochemical and mechanical properties when Fe³⁺ concentration is 0.015 mol/L in the bath.And the action mechanism of Fe³⁺ as the dopant is also analyzed.更多还原