FENG Yu 1, DING Xiao 1, MA Zheng 1, LI Yongyong 1, ZENG Fanrong 2, ZHOU Juan 1, WANG Shaorong 2
(1. Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China; 2. China University of Mining and Technology, Xuzhou 221116, Jiangsu, China)
Abstract: As a new generation non-pollution and high-efficiency energy conversion device, solid oxide fuel cell (SOFC) can directly convert chemical energy of fuel to electric energy, while releasing heat. However, high manufacturing cost and short life are the keys restricting the commercialization of SOFC. The increase in operating life is one of the solutions to reduce the cost, while the degradation of SOFCs is attributed to various factors, such as electrode sintering, electrode poisoning, and interface diffusion, thermal stress between modules and so on. In this paper, the reasons of performance degradation are summarized from four aspects, including anode materials, cathode materials, electrolyte materials and other materials.
Key words: solid oxide fuel cells (SOFCs); performance degradation; long-term stability