可逆式固態氧化物燃料電池電池發電與電解製氫之研究

Development of Reversible Solid Oxide Fuel Cell for Power Generation and Hydrogen Production

陳正揚(Cheng-Yang Chen)

指導教授 ： 鐘國濱

元智大學/工程學院/機械工程學系/碩士(2011年)

摘要

可逆式固態氧化物燃料電池(URSOFC)與一般固態氧化物燃料電池(SOFC)之差異，在於一般SOFC只能單向運作進行電池放電(SOFC)模式， 而URSOFC除了SOFC模式還可進行電解儲能(SOEC)，在同一個元件中進行放電與儲能兩種功能，當電池作為能量儲存裝置，URSOFC就像一個電解槽電解水模式藉由電能電解產生氫氣和氧氣儲存。氫在工業應用中是有用的氣體燃料，URSOFC也可以作為燃料電池的SOFC模式，在用電尖峰時段時產生電力。該URSOFC將是一個具有競爭力的技術，在即將到來的氫經濟時代，具有成本低，結構簡單，效率高等優點。本文敘述製造與設計膜電極組件所使用的商購材料。另外也說明了性能，無論是電池放電及電解儲能模式，改變溫度，進氣組成（濕度）和電流密度等參數，觀察其趨勢。在電池性能實驗溫度趨勢，電池溫度提升，性能上升；濕度(%RH)方面，在SOFC模式下性能與濕度比例成反比，SOEC模式下性能與濕度比例成正比。在微結構分析，電池/電解後氧氣極平整度降低，孔隙度提升。

關鍵字

可逆式固態氧化物燃料電池(URSOFC) ； 鑭鍶錳 ； 燃料電池 ； 水電解

並列摘要

A reversible solid oxide fuel cell (RSOFC) provides a dual function of performing energy storage and power generation, all in one unit. When function as an energy storage device, RSOFC acts like an electrolyzer in water electrolysis mode whereby the electric energy is stored in its electrolyzed hydrogen and oxygen gases. While hydrogen can then be useful for transportation fuel and other industrial applications, the RSOFC can also acts as a fuel cell in power generation mode to produce electricity when in need. The RSOFC would be a competitive technology in the upcoming hydrogen economy on the basis of low cost, simple structure, and high efficiency advantages. This paper reports the design and manufacturing of its membrane electrode assembly using commercially available materials. Also reported are the resulting performance, both in electrolysis and fuel cell modes, as a function of its operating parameters, such as temperature, inlet gas composition (humidity) and current density. The RSOFC is shown to have a better performance in fuel cell than in electrolysis mode. In the cell performance test, , cell temperature increased accompany with the performance increased.In the RH condition, the SOFC performance was negative with RH and the SOEC performance was positive with RH. In the micro structure analysis, the oxygen side became roughness and increased the porosity.

並列關鍵字

Reversible Solid Oxide Fuel Cell (RSOFC) ； LaSrMn ； Fuel Cell ； Water Electrolysis

參考文獻

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