Impact of glass corrosion on the electrocatalysis on Pt electrodes in alkaline electrolyte

The influence of glass corrosion on the electrocatalytic activity of fuel cell catalysts was studied. A Teflon electrochem. cell was designed for measurements in alk. electrolyte. The cell performance was tested and compared to a std. electrochem. glass cell by measuring the O redn. reaction and the H oxidn. reaction on polycryst. Pt in 0.1M KOH. In the Teflon cell the shape of the cyclic voltammogram as well as the activity for the reactions are reproducible and do not alter over a long period of time. By comparison, using the std. electrochem. cell made out of Duran glass, the expts. on polycryst. Pt electrodes in alk. electrolyte are insufficiently reproducible. The cyclic voltammograms alter over time, and the activities for H oxidn. as well as O redn. depend on the applied potential scan limits. This is due to the contamination of the electrolyte because of the etching of glass by KOH - anal. of the alk. electrolyte after usage in the resp. cell types by ICP-OES confirmed this suggestion. [on SciFinder(R)]     «

The influence of glass corrosion on the electrocatalytic activity of fuel cell catalysts was studied. A Teflon electrochem. cell was designed for measurements in alk. electrolyte. The cell performance was tested and compared to a std. electrochem. glass cell by measuring the O redn. reaction and the H oxidn. reaction on polycryst. Pt in 0.1M KOH. In the Teflon cell the shape of the cyclic voltammogram as well as the activity for the reactions are reproducible and do not alter over a long period...     »

Corrosion Fuel cell electrodes (impact of glass corrosion on catalytic activity of platinum fuel cell electrodes in alk. electrolyte) Fuel cells (proton exchange membrane impact of glass corrosion on catalytic activity of platinum fuel cell electrodes in alk. electrolyte) Borosilicate glasses Role: PEP (Physical, engineering or chemical process), TEM (Technical or engineered material use), PROC (Process), USES (Uses) (sodium borosilicate, Duran glass impact of glass corrosion on catalytic activity of platinum fuel cell electrodes in alk. electrolyte) platinum electrocatalyst fuel cell electrode glass corrosion alk electrolyte     «

Corrosion Fuel cell electrodes (impact of glass corrosion on catalytic activity of platinum fuel cell electrodes in alk. electrolyte) Fuel cells (proton exchange membrane impact of glass corrosion on catalytic activity of platinum fuel cell electrodes in alk. electrolyte) Borosilicate glasses Role: PEP (Physical, engineering or chemical process), TEM (Technical or engineered material use), PROC (Process), USES (Uses) (sodium borosilicate, Duran glass impact of glass corrosion on catalytic activi...     »

CAN 148:358852 52-2 Electrochemical, Radiational, and Thermal Energy Technology Institut fuer Physikalische Chemie, Technische Universitaet Muenchen, Garching, Germany. Journal 0013-4651 7440-06-4 (Platinum) Role: CAT (Catalyst use), TEM (Technical or engineered material use), USES (Uses) (impact of glass corrosion on catalytic activity of platinum fuel cell electrodes in alk. electrolyte); 1310-58-3 (Potassium hydroxide (K(OH))) Role: TEM (Technical or engineered material use), USES (Uses) (impact of glass corrosion on catalytic activity of platinum fuel cell electrodes in alk. electrolyte)     «

CAN 148:358852 52-2 Electrochemical, Radiational, and Thermal Energy Technology Institut fuer Physikalische Chemie, Technische Universitaet Muenchen, Garching, Germany. Journal 0013-4651 7440-06-4 (Platinum) Role: CAT (Catalyst use), TEM (Technical or engineered material use), USES (Uses) (impact of glass corrosion on catalytic activity of platinum fuel cell electrodes in alk. electrolyte); 1310-58-3 (Potassium hydroxide (K(OH))) Role: TEM (Technical or engineered material use), USES (Uses) (im...     »