Title :
Ce0.8Sr0.2Cr0.5V0.5 as the anode materials for H2S fueled solid oxide fuel cells
Author :
Zhu, Xiufang ; Zhao, Xuejun ; Zhong, Qin
Author_Institution :
Sch. of Chem. Eng., Nanjing Univ. of Sci. & Technol., Nanjing, China
Abstract :
Ce0.8Sr0.2Cr0.5V0.5O3-¿(CSCV) material was synthesized by gel combustion method. Performances of prepared material were characterized using TG-DTA, XRD methods. The conductivity of catalyst was measured with DC four probe method in 3% H2-N2 at 773-1173 K. The results show that CSCV materials with good heat-stability has perfect perovskite phase. Besides, CSCV materials exhibit good chemical compatibility with BaCe0.45Zr0.5Y0.15O3-¿ as electrolyte material in N2, and the open circuit voltage is 0.85 V, the max power density is 50 mW/cm2. Meanwhile, they maintain good chemical stability in H2S atmosphere through XRD analysis. The CSCV sample showed the highest conductivity of 0.21 s/cm at 1173 K, which satisfies the anode catalyst of solid oxide fuel cell and would be a novel sulfur tolerant anode material.
Keywords :
catalysts; cerium compounds; chromium compounds; electrochemical electrodes; hydrogen compounds; solid oxide fuel cells; strontium compounds; Ce0.8Sr0.2Cr0.5V0.5; DC four probe method; H2S; TG-DTA; XRD; anode catalyst; anode materials; gel combustion method; heat-stability; perovskite phase; solid oxide fuel cells; Anodes; Chemical analysis; Chromium; Combustion; Conducting materials; Conductivity; Fuel cells; Solids; Strontium; X-ray scattering;
Conference_Titel :
Power and Energy Engineering Conference (APPEEC), 2010 Asia-Pacific
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-4812-8
Electronic_ISBN :
978-1-4244-4813-5
DOI :
10.1109/APPEEC.2010.5449177
