Model systems for the study of electrocatalysis at the nanoparticle- electrolyte-gas reactant three-phase interface

Matthias Loster*, Andreas Friedrich, Daniel Alberto Scherson

*この研究の対応する著者

研究成果査読

抄録

A method is herein described that enables the sharp, conically-shaped tip of a short Pt wire attached to a conventional scanning tunneling microscope (STM) head to be gradually inserted into a Nafion solid polymer electrolyte membrane. A comparatively much larger Pt electrode placed on the underside of the membrane allows for the area of the Pt tip in contact with the Nafion to be determined by coulometric analysis of the cyclic voltammetric features. Preliminary results have shown that this novel tactic makes it possible to examine clean Pt surfaces involving as few as ca. 94,000 active metal sites to contact Nafion, opening new prospects for probing the Pt|Ionomer|Gas three-phase interface under conditions which replicate those found in fuel cells.

本文言語English
ページ175-180
ページ数6
出版ステータスPublished - 2004 12 1
外部発表はい
イベント206th ECS Meeting - Honolulu, HI, United States
継続期間: 2004 10 32004 10 8

Conference

Conference206th ECS Meeting
国/地域United States
CityHonolulu, HI
Period04/10/304/10/8

ASJC Scopus subject areas

  • 工学(全般)

フィンガープリント

「Model systems for the study of electrocatalysis at the nanoparticle- electrolyte-gas reactant three-phase interface」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル