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Acta Metall Sin  2005, Vol. 41 Issue (7): 763-768     DOI:
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Effect of Oxalic Acid Etching on Morphology and Electrocatalytic Activity of Oxide Anodes
CHU Liying; XU Likun; WU Lianbo;WANG Tingyong; WANG Juntao;CHEN Guangzhang
State Key Laboratory for Marine Corrosion and Protection; Luoyang Ship Materials Research Institute; Qingdao 266071
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CHU Liying; XU Likun; WU Lianbo; WANG Tingyong; WANG Juntao; CHEN Guangzhang. Effect of Oxalic Acid Etching on Morphology and Electrocatalytic Activity of Oxide Anodes. Acta Metall Sin, 2005, 41(7): 763-768 .

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Abstract  IrO2--Ta2O5 oxide anode was prepared by coating oxide on titanium substrate which has been pretreated by sandblast and oxalic acid etching. ESEM, polarization curve and EIS indicated that the corrosion rate of the substrate and the loading of the oxide coating (i.e. Ir content) increase with etching time at the initial stage and then decrease. The oxide coating on the substrate pretreated by suitable etching pretreatment is of a uniform and compact surface which has large electrochemical active surface area, fine electrocatalytic activity for oxygen evolution and high stability.
Key words:  oxide anode      etching      oxalic acid      
Received:  04 November 2004     
ZTFLH:  TG172  

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https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y2005/V41/I7/763

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