中文質子傳輸型固態氧化物燃料電池陽極之研究;Synthesis and Investigation of Anode for Medium Temperature Proton Exchange Solid Oxide Fuel Cell Research

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题名:	中文質子傳輸型固態氧化物燃料電池陽極之研究;Synthesis and Investigation of Anode for Medium Temperature Proton Exchange Solid Oxide Fuel Cell Research
作者:	龐又齊;Pang, Yu-Chi
贡献者:	能源工程研究所
关键词:	中溫;質子傳導;固態氧化物燃料電池;熱膨脹係數;維克氏硬度;碳沉積;氧化還原循環;Intermediate Temperature;Proton Conduction;Solid Oxide Fuel Cell;Coefficient of Thermal Expansion;Vickers Hardness;Carbon Deposition;Redox Cycle
日期:	2019-08-20
上传时间:	2019-09-03 15:06:44 (UTC+8)
出版者:	國立中央大學
摘要:	本研究主要探討利用固相反應法(Solid State Reaction, SSR)製作合金陽極應用在質子傳輸型固態氧化物燃料電池(Proton Conducting Solid Oxide Fuel Cell, P-SOFC)。合金陽極量測則分為成份比例、晶相鑑定、微觀結構、機械性質及電性分析；藉由調整鎳鈷合金(Nickel Cobolt Alloy, NiCo alloy)的煆燒溫度、煆燒時間及改變NiCo合金比例，目標是以少許鈷元素(Cobalt, Co)與鎳元素(Nickel, Ni)置換之陽極達到比傳統以Ni金屬為主之陽極具有較佳之電性、抗碳沉積能力及氧化還原循環穩定性。研究結果顯示，藉由調整NiCo合金粉末煆燒溫度及煆燒時間會改變NiCo合金晶粒大小、導電度及熱膨脹係數。當Ni0.9Co0.1合金之煆燒溫度為1000 ºC及煆燒時間為3小時，操作溫度為600 ºC時，其導電度為2623 S/cm。選取最佳煆燒溫度、煆燒時間及NiCo成份比例，當Ni : Co莫爾比為9:1時，陽極具有相當優異之導電度及熱膨脹係數，其導電度比傳統以金屬Ni為主之陽極高，當Ni : Co莫爾比為7:3時，其熱膨脹係數為13.6×10-6 K-1、有最佳的抗碳沉積能力及經過氧化還原循環後有最佳機械強度。 ;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.
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