Polymer Science Faculty Research

Title

Investigating the CH 4 reaction pathway on a novel LSCF anode catalyst in the SOFC

Document Type

Article

Publication Date

2-15-2009

Abstract

For the first time, the perovskite lanthanum strontium cobalt ferrite (LSCF) is demonstrated to exhibit catalytic activity for the direct electrochemical oxidation of CH4 in a solid oxide fuel cell (SOFC) anode environment for more than 72 h with a steady state flow of CH4 at 900 °C, producing a maximum of 186 W/cm2. Results of the transient response studies suggested that the electrochemical oxidation of CH4 on the anode produced electricity, H2O, and CO2 via (i) CH4 decomposition, (ii) electrochemical oxidation of hydrogen to H2O, and (iii) electrochemical oxidation of carbon to CO2. The formation of CO2 and CO takes place in a parallel pathway: C + 2O2− → CO2; C + O2− → CO; where the intrinsic rate constant for the formation of CO2 is greater than that of CO.

Publication Title

Catalysis Communications

Volume

10

Issue

6

First Page

772

Last Page

776