固態氧化物燃料電池堆是由陰極、電解質、陽極及連接板層層堆疊而成，各組件均可能影響電流的整體輸出密度、穩定度甚至造成電池堆的失效。以往於連接板正規製程中有尚未解明的不明原因導致最終電池良率降低的現象。為試圖找出影響該電池良率之因素，本研究針對成形後的連接板是否因放置時間長短的影響而作環境測試，實驗是將連接板暴露在不同溫濕度及時間的環境下，之後分析其經燒結及熱處理前後各項性質之變化。
連接板所扮演的角色為串聯每個單電池及阻隔陰陽極兩端之氣體流竄導通，故其特性需具備高導電性、高緻密度，且因電池堆需堆疊多組單電池，故連接板亦需具備高平坦度及平行度，以利電池堆堆疊平整及燃料氣體反應均勻，又因電池工作溫度極高，故各組件熱膨脹係數須嚴格匹配。針對以上所需之特性，本實驗於成形至燒結間作環境模擬，即將連接板置於不同的溫度及濕度環境下一段時日，之後觀察其表面變化，且於製程各階段分別量測重量、尺寸、磁性、電阻、翹曲度、面粗度、平面度、熱膨脹係數及觀察金相，分析各項性質受環境影響之變化。
結果顯示成形後的連接板試片置於高濕度(濕度95%，溫度15~45℃)之環境後，其外觀有生鏽的現象，該鏽斑是隨置放時間愈長而愈顯著；但經還原氣氛下燒結後該鏽斑會被還原，故不同環境對連接板外觀之影響於燒結後皆消失；而於其他量測結果亦皆顯示環境因素對燒結或氧化處理後的連接板之特性/性質無顯著之影響。

Solid oxide fuel cell (SOFC) stack is composed of cathode, electrolyte, anode and interconnector layering over each other. Each component will affect the current density, stability of SOFC stack, and even induce cell failure. There were some unknown factors that decreased the cell efficiency in the formal manufacturing procedure of interconnector. In order to find the factors, environmental test only for interconnectors to make it exposed to different temperatures and humidity was done. Then many properties of interconnector before and after sintering and heat treatment processes were analyzed to make sure which or not the environmental factors affect the cell efficiency.
The roles of interconnectors are to connect each cell and act as a physical barrier to separate the anodic and cathodic gases. Therefore, not only characteristics of high electrical conductivity and high gas tightness but also high flatness and parallelism for stacking and making gas react uniformly are necessary. Coefficient of thermal expansion also should be severely matched with each component, since SOFC working temperature is very high. For the green compact of interconnectors, environmental tests which at different temperature, humidity and time were done, and then the change of surface was observed. Next, characteristics of weight, size, magnetism, electrical resistance, roughness, flatness, thermal expansion coefficient, and microstructures were measured for each manufacturing process.
The results showed that there were oxide rust formation on the surface of high humidity(95%) samples exposed at 15~45℃. However, the rust disappeared after sintering at H2 atmosphere. So the effect of environmental factors on the surface of interconnector disappeared after sintering. The other results also obtained from sintering or post oxidation treatment samples showed that the environmental factors didn’t have obvious effect on the characteristics/properties of interconnectors.

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