Increase in adsorptivity of sulfonate anions on Pt (111) surface with drying of ionomer

The interface between Nafion and Pt (111) was analyzed in a solid-state electrochemical cell to clarify the catalyst poisoning property of the ionomer in various hydration states. With dehydration of the ionomer, peaks for adsorption and desorption of the sulfonate anions in the cyclic voltammogram...

Full description

Saved in:
Bibliographic Details
Published in:Electrochemistry communications 2013-11, Vol.36, p.26-28
Main Authors: Kodama, Kensaku, Jinnouchi, Ryosuke, Suzuki, Takahisa, Murata, Hajime, Hatanaka, Tatsuya, Morimoto, Yu
Format: Article
Language:English
Subjects:
Applied sciences
Dry condition
Energy
Energy. Thermal use of fuels
Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc
Exact sciences and technology
Fuel cells
Ionomer
Pt single crystal
Solid-state electrochemical cell
Sulfonate anion adsorption
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The interface between Nafion and Pt (111) was analyzed in a solid-state electrochemical cell to clarify the catalyst poisoning property of the ionomer in various hydration states. With dehydration of the ionomer, peaks for adsorption and desorption of the sulfonate anions in the cyclic voltammogram showed significant shifts to lower potentials, which indicate increase in the anion adsorptivity. [Display omitted] •A solid-state cell with a Nafion-covered Pt (111) single crystal was devised.•A well-defined and clean Nafion/Pt (111) interface was successfully formed.•Peaks due to the adsorption and desorption of the sulfonate anions were observed.•With dehydration of the ionomer, the peaks are shifted to lower potentials.•The results show that the anion adsorptivity is increased with drying in PEFCs.
ISSN:1388-2481
1873-1902
DOI:10.1016/j.elecom.2013.09.005