|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||2018 Symposium on Functional Nanomaterials: Discovery and Integration of Nanomaterials
||Nanoscale Size Control of RuO2 Particles and Effects on Electron Transfer and Mass Transfer Processes of Oxygen Evolution Reaction
||Kenji Kawaguchi, Shuhei Kimura, Masatsugu Morimitsu
|On-Site Speaker (Planned)
The nano/amorphous hybrid structure of RuO<SUB>2</SUB>-Ta<SUB>2</SUB>O<SUB>5</SUB> coated titanium anodes has been found to show an excellent catalytic activity for oxygen evolution in acidic aqueous solutions by our group and the application to electrowinning anodes has been reported with a significant reduction in cell voltage compared to traditional lead alloy or other oxide coated titanium anodes. The reason for such a high catalytic activity is mainly the generation of nano-sized RuO<SUB>2</SUB> particles which are uniformly dispersed in the amorphous Ta<SUB>2</SUB>O<SUB>5</SUB> matrix. This work aimed to investigate the nanoscale size effects of RuO<SUB>2</SUB> particles on electron transfer and mass transfer processes of oxygen evolution reaction. The results imply that the nanoscale particle size of RuO<SUB>2</SUB> affects not only the active surface area for the potential region governed by mass transfer but also the overpotential region for electron transfer. More detailed results are shown in this paper.
||Planned: Supplemental Proceedings volume