1. Effects of H2S and H2O on carbon deposition over La0.4Sr0.5Ba0.1TiO3/YSZ perovskite anodes in methane fueled SOFCs.
- Author
-
Cui, Shao-Hua, Li, Jian-Hui, Jayakumar, Abhimanyu, Luo, Jing-Li, Chuang, Karl T., Hill, Josephine M., and Qiao, Li-Jie
- Subjects
- *
HYDROGEN sulfide , *SEDIMENTATION & deposition , *METHANE , *TEMPERATURE-programmed reduction , *ANODES , *FOURIER transform infrared spectroscopy - Abstract
Abstract: The effects of H2S and H2O in the methane feed on carbon deposition in a La0.4Sr0.5Ba0.1TiO3 (LSBT) anode-based solid oxide fuel cell were investigated in this work under different operating conditions. Characterization was done using a combination of electrochemical, Fourier transform infra-red spectroscopy (FTIR), temperature-programmed oxidation (TPO) and X-ray photoelectron spectroscopy (XPS) measurements. As expected, carbon accumulation became more severe with increasing exposure time and operating temperature, but less severe in the presence of a current and/or steam. Addition of 0.5% H2S to the feed increased carbon accumulation and this carbon could not be removed effectively by co-feeding a small amount of steam to the anode. The resulting carbon was, however, easier to remove with oxygen as compared to that deposited by the H2S-containing dry feed. [Copyright &y& Elsevier]
- Published
- 2014
- Full Text
- View/download PDF