|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 RuO2-Ta2O5 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 RuO2 particles which are uniformly dispersed in the amorphous Ta2O5 matrix. This work aimed to investigate the nanoscale size effects of RuO2 particles on electron transfer and mass transfer processes of oxygen evolution reaction. The results imply that the nanoscale particle size of RuO2 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