A Study on the Preparation of Lead Dioxide Electrode with High Oxygen Overvoltage and Durability

높은 산소과전압과 내구성의 이산화납전극 제조에 관한 연구

  • Kim, Jae Kwan (Environmental Technology Research Group, Korea Electric Power Research Institute) ;
  • Choi, Byun Sun (Environmental Technology Research Group, Korea Electric Power Research Institute) ;
  • Nam, Chong Woo (Department of Chemical Engineering, Inha University)
  • 김재관 (전력연구원 환경설비그룹) ;
  • 최병선 (전력연구원 환경설비그룹) ;
  • 남종우 (인하대학교 화학공학과)
  • Received : 1996.07.22
  • Accepted : 1996.11.11
  • Published : 1996.12.10

Abstract

The characteristic and performance of ${\beta}-PbO_2$ layer electrodeposited on ${\alpha}-PbO_2/IrO_2-TiO_2/Ti$ substrate by adding sodium lauryl sulfate and $TiO_2$ powder in lead nitrate solution were investigated by using XRD, SEM, cyclic voltammograms, and macro-elctrolysis. Results of XRD analysis ascertain that ${\beta}-PbO_2$ layers electrodeposited in the presence of sodium lauryl sulfate and $TiO_2$, powder on ${\alpha}-PbO_2/IrO_2-TiO_2/Ti$ substrate have the same tetragonal structure as pure ${\beta}-PbO_2$ layers. The SEM results show that sodium lauryl sulfate tend to diminish crystal size of the deposited layer. The ${\beta}-PbO_2$ electrode electrodeposited in the presence of sodium lauryl sulfate and $TiO_2$ powder gives significantly improved oxygen overvoltage and durability for anodic oxidation in KOH and $HClO_4$ supporting electrolyte. Electrode performance and durability for the evolution of ozone in perchloric acid solution have been investigated by using ${\beta}-PbO_2$ electrodes electrodeposited on Titanium $madras^{(R)}$. It was ascertained that the $PbO_2$ electrode electrodeposited on ${\alpha}-PbO_2/IrO_2-TiO_2/Ti$ $madras^{(R)}$ by adding sodium lauryl sulfate and $TiO_2$ powder in $HClO_4$ supporting electrolyte had the highest current efficiency and durability.

Keywords

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