不同第二相IrO2系析氧阳极的循环伏安行为
Cyclic Voltammetry Behaviour of IrO2-type Anodes Doped with Different Second Phases for Oxygen Evolution
摘 要
采用传统热分解法制备了不同第二相IrO2系氧化物析氧阳极涂层，使用循环伏安法(CV)研究了不同第二相元素Mn、Ni、Sn和Al对IrO2系氧化物析氧阳极在0.5 mol/L H2SO4溶液中的循环伏安行为。结果表明，Ir-Mn氧化物析氧阳极外表面伏安电荷qo最大，Ir-Sn氧化物析氧阳极最低; Ir-Mn氧化物析氧阳极内表面伏安电荷qi也是最高，Ir-Al和Ir-Sn氧化物阳极相对较低; Ir-Mn氧化物析氧阳极总循环伏安电荷qT远高于其它涂层。
第二相
IrO2
循环伏安
伏安电荷
thermal decomposition
second phase
IrO2
cyclic voltammetry
voltammetry charge
Abstract
The oxide coatings of IrO2-type anode doped with different second phases for oxygen evolution were prepared by traditional method of thermal decomposition. Cyclic voltammetry (CV) was used to study the influence of doping different second phase elements (Mn, Ni, Sn and Al) on the cyclic voltammetry behaviors of IrO2-type oxide anodes for oxygen evolution in 0.5 mol/L H2SO4 solution. The results showed that Ir-Mn oxide anode for oxygen evolution obtained the maximum of voltammetry charge qo on the outer surface of anode coating and Ir-Sn anode obtained the minimum. The Ir-Mn oxide anode for oxygen evolution also obtained the maximum of voltammetry charge qi on the inner surface of anode coating. The voltammetry charge qi of Ir-Al and Ir-Sn was relatively low compared to that of Ir-Mn. The gross voltammetry charge qT of Ir-Mn oxide anode was far greater than that of other coatings.
中图分类号 TG178
所属栏目 试验研究
基金项目 国家自然科学基金(21103085)
收稿日期 2013/8/16
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备注叶志国(1979-),副教授,博士,从事金属腐蚀与防护相关研究,
引用该论文: GONG Zhi-hou,FAN Qing-guo,LANG Yun,YE Zhi-guo. Cyclic Voltammetry Behaviour of IrO2-type Anodes Doped with Different Second Phases for Oxygen Evolution[J]. Corrosion & Protection, 2014, 35(6): 550
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参考文献
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【2】TRASATTI S. Electrocatalysis:Understanding the success of DSA[J]. Electrochimica Acta,2000,45(15):2377-2385.
【3】叶志国. 锰复合纳米氧化物析氧、析氯阳极的研究[D]. 北京:北京科技大学,2009.
【4】ZHOU X L,YE Z G,HUA X Z,et al. Electrocatalytic activity and stability of Ti/IrO2+MnO2 anode in 0.5 M NaCl solution[J]. Journal of Solid State Electrochemistry,2010,14(7):1213-1219.
【5】BURKE L D,WHELAN D P A. Voltammetric investigation of the charge storage reactions of hydrous iridium oxide layers[J]. Journal of Electroanalytical Chemistry and Interfacial Electrochemistry,1984,162(1/2):121-141.
【6】ANGELINETTA C,TRASATTI S,ATANASOSKA L D,et al. Effect of preparation on the surface and electrocatalytic properties of RuO2+IrO2 mixed oxide electrodes[J]. Materials Chemistry and Physics,1989,22(1/2):231-247.
【7】SPINOLO G,ARDIZZONE S,TRASATI S. Surface characterization of Co3O4 electrodes prepared by the sol-gel method[J]. Journal of Electroanalytical Chemistry,1997,423(1):49-57.
【8】XU C J,LI B H,DU H D,et al. Electrochemical properties of nanosized hydrous manganese dioxide synthesized by a self-reacting microemulsion method[J]. Journal of Power Sources,2008,180(1):664-670.
【9】YE Z G,MENG H M,SUN D B. New degradation mechanism of Ti/IrO2+MnO2 anode for oxygen evolution in 0.5 M H2SO4 solution[J]. Electrochimica Acta,2008,53(18):5639-5643.
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