Abstract
The use of a PtAu catalyst as an anode catalyst for the oxidation of formic acid in direct formic acid fuel cells is described. Catalytic activities of PtAu and PtRu anodes were studied using a linear sweep voltammetry technique in a single cell configuration. PtAu showed a lower on-set potential and a larger current density than that of PtRu in formic acid oxidation. In addition, the maximum power densities at 30 °C for PtAu and PtRu were 94 and 74 mW cm-2, respectively. In order to evaluate long-term durability, the single cells were operated for hundreds of hours with a 6 M aqueous formic acid solution at 60 °C under 100 mA cm-2. The difference in performance between PtAu and PtRu after 500 h reached ca. 90 mV in direct formic acid fuel cells.
| Original language | English |
|---|---|
| Pages (from-to) | 71-75 |
| Number of pages | 5 |
| Journal | Journal of Power Sources |
| Volume | 163 |
| Issue number | 1 SPEC. ISS. |
| DOIs | |
| Publication status | Published - 2006 Dec 7 |
Bibliographical note
Funding Information:This work was financially supported by Korea Institute of Science and Technology (2E18260) and the Brain Korea 21 project from the Ministry of Education. Y.-E. Sung acknowledges a financial support by Korea Research Foundation (Grant #KRF-2004-005-D00064) and by KOSEF through the Research Center for Energy Conversion and Storage.
Keywords
- Anode
- Electrocatalyst
- Formic acid
- Fuel cell
- Methanol
- PtAu
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Energy Engineering and Power Technology
- Physical and Theoretical Chemistry
- Electrical and Electronic Engineering
