Synthesis and Investigation of Anode for Medium Temperature Proton Exchange Solid Oxide Fuel Cell Research

• Main Authors: Yu-Chi Pang, 龐又齊
• Other Authors: Chung-Jen Tseng
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/27723v

碩士 === 國立中央大學 === 能源工程研究所 === 107 === In this research, solid-state reaction (SSR) synthesis process is chosen to develop an alloy catalyst as an anode in proton conducting solid oxide fuel cell (P-SOFC). Initially, anode alloy is characterized to identify the ratio of components, phase identification, microstructure, mechanical properties and electrical conductivity. The aim of this research is to synthesize a higher electrical conducting anode catalyst for P-SOFC, when compared to the traditional NiO anode. Incorporation of cobalt in nickel oxide can enhance the electrical properties of anode in P-SOFC. Several variations in the ratio of alloy (Ni : Co) and calcining parameters such as temperature and time would enhance the electrical conductivity, carbon deposition resistance and the redox cycle stability of the catalyst. This is better than the traditional NiO catalyst. The results show that, variation of calcined temperature and calcined time can change the particle size, electrical conductivity and coefficient of thermal expansion (CTE). Initially, we investigated the best appropriate calcination temperature and duration, and then the ratio of Ni : Co is varied. The best carbon deposition resistance, stability in redox cycle and CTE of 13.6×10-6 K-1 is observed for the Ni : Co molar ratio of 7 : 3. The NiCo anode has relatively good electrical conductivity than that of Ni anode (2354 S/cm). This work can help to replace the traditional NiO anode in P-SOFC.