Abstract
Highly stable graphitic mesoporous carbons (GMPCs) are synthesized by heat-treating polymer-templated mesoporous carbon (MPC) at 2600 °C. The electrochemical durability of GMPC as Pt catalyst support (Pt/GMPC) is compared with that of carbon black (Pt/XC-72). Comparisons are made using potentiostatic and cyclic voltammetric techniques on the respective specimens under conditions simulating the cathode environment of PEMFC (proton exchange membrane fuel cell). The results indicate that the Pt/GMPC is much more stable than Pt/XC-72, with 96% lower corrosion current. The Pt/GMPC also exhibits a greatly reduced loss of catalytic surface area: 14% for Pt/GMPC vs. 39% for Pt/XC-72.
| Original language | English |
|---|---|
| Pages (from-to) | 423-427 |
| Number of pages | 5 |
| Journal | Journal of Power Sources |
| Volume | 185 |
| Issue number | 1 |
| DOIs | |
| State | Published - Oct 15 2008 |
Funding
The work at UC was supported by Department of Energy. The work at ORNL was supported by DOE EERE. A portion of the work was conducted at the Center for Nanophase Materials Sciences, which is sponsored at ORNL by the Division of Scientific User Facilities, U.S. Department of Energy. S.D. would like to thank Dr. Nancy Dudney for the resistivity measurement of the mesoporous carbons.
| Funders | Funder number |
|---|---|
| U.S. Department of Energy | |
| Office of Energy Efficiency and Renewable Energy |
Keywords
- Carbon black
- Catalyst support
- Durability
- Fuel cell
- Graphitic carbon
- Mesopores
