Publications by authors named "Yuhki Yui"

Article Synopsis
  • Aqueous formic acid dehydrogenation (FAD) is important for producing hydrogen, a clean energy source, using Pd-based catalysts that convert formic acid to hydrogen and carbon dioxide.
  • Researchers conducted experiments varying reactant concentrations and modifying Pd with Ag to study the FAD rates and their correlation with the catalyst's open-circuit potential (OCP).
  • Findings revealed that lower OCP values corresponded with higher FAD rates, while catalyst performance decreased over time, showing a linear relationship between FAD rate and OCP during decay, linking thermal and electrocatalytic processes.
View Article and Find Full Text PDF
Article Synopsis
  • The study investigates how controlling the electrochemical potential of catalysts can improve their performance by reducing the coverage of adsorbed substances such as CO, which inhibits catalytic reactions.
  • Using aqueous CO oxidation as a model, researchers found that applying an anodic potential significantly increased the rate of CO formation by five times compared to traditional methods.
  • The findings suggest a universal approach to enhance thermal catalysis through electrochemical tuning, showing promising results across various metal catalysts and offering potential for more environmentally friendly reaction processes.
View Article and Find Full Text PDF

Electrochemical sodium deposition/dissolution behaviors in propylene carbonate-based electrolyte solution were observed by means of in situ light microscopy. First, granular sodium was deposited at pits in a sodium electrode in the cathodic process. Then, the sodium particles grew linearly from the electrode surface, becoming needle-like in shape.

View Article and Find Full Text PDF