TAO Haoliang 1,2, XIE Jianjun 1, WANG Shaorong 3
(1. School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China; 2. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201800, China; 3. School of Chemical Engineering, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China)
Abstract: Hydrocarbon fuels are more suitable for commercialization of solid oxide fuel cells. However, the reactions of hydrocarbon fuels are quite complicated. For example, carbon is easy to deposit on an anode. The impurities such as H2S in the fuels also poison the anode. The symmetrical solid oxide fuel cell (SSOFC) which has two identical electrodes is a promising design. The most outstanding characteristic of a SSOFC is that the deposited carbon or even sulfide can be removed by exposing the anode to air. To work on both electrodes, however, the electrode materials are facing much stricter requirements. This review summarizes the development of electrode materials for SSOFCs, the hotspots and the problems remain to be solved.
Key words: symmetrical solid oxide fuel cell; electrode materials