- 學位論文
以旋轉電極制備固體氧化物燃料電池鐵鉻基陽極基材之探討
Research of Preparing Iron-Chromium based SOFC Anode Substrate by Rotating Electrode Processing
摘要
傳統固態氧化物燃料電池(SOFC)用的陽極Ni-YSZ複合材料，其缺點在於，以NI做為基底的陽極材，成本無法進一步降低，近期開始出現以不銹鋼做為陽極支撐材料的相關研究與學術著作，其單價跟含Ni材料相比低廉許多，希望藉由不銹鋼來降低燃料電池的成本。另外，不銹鋼本身在高溫時與基材的熱膨脹係數較為匹配，也有不錯的抗氧化性，是個擁有高度競爭能力的陽極支撐材材料。 本研究的目的主要在於改善陽極材料，發展以不銹鋼為主的金屬合金，有別於一般陽極的製備方式，本實驗以旋轉電極粉末冶金的方式製作陽極粉末，並改變其孔隙率以及鉻含量，以期做出達到最大化抗氧化能力以及導電性的金屬陽極支撐材。 本實驗之負極為鎢棒，正極為420不銹鋼。製備出的粉末，將會與粒徑不同的Fe、Cr粉進行混合，以改變其孔隙率和鉻含量。燒結後以顯微鏡觀察其燒結情形，並且將其拿去做以下的分析：孔隙度測量、TMA測熱膨脹係數、高溫氧化還原測試、SEM觀察微結構的變化、四點探針量測法測電阻。
並列摘要
Conventional anode support of solid oxide fuel cell (SOFC) with Ni-YSZ composite materials has the drawback of high material cost. Recently research works attempt to use stainless steel instead of using Ni-base alloy as anode support materials to reduce the cost of SOFC fuel cells. The stainless steel substrate is highly competitive materials for anode materials due to the properties of good match with solid electrolyte in thermal expansion coefficient as well as better oxidation resistance than Ni-base alloy. However the porous anode substrate with conventional processing method is time spending and expansive, therefore in this report a process will be proposed to fabricate the anode support substrate with powder metallurgy method. Stainless steel420 -based spherical powder with particle size of around 150 um has been made with rotating electrode process. The experiment is carried out with tungsten cathode and anode of rod of stainless steel. It was than sintered with proper sintering condition and binders. The results of experiment indicated that alloys substrate made with this technique could contain large pore and porosity. The sintered specimens were than evaluated with TMA analysis of thermal expansion coefficient, oxidation test and SEM observation of microstructure .
參考文獻
延伸閱讀
- 許富明（2010）。電場/電磁場誘發鍍鎳碳纖維配向於環氧樹脂基材之研究及其在燃料電池雙極板之應用〔碩士論文，國立交通大學〕。華藝線上圖書館。https://doi.org/10.6842/NCTU.2010.00278
- Lu, C. C. (2010). 利用螺旋式電極的常壓射頻電漿束鍍製氧化矽薄膜之研究 [master's thesis, National Chiao Tung University]. Airiti Library. https://doi.org/10.6842/NCTU.2010.00602
- 陳育鈞（2010）。電漿熔射噴塗法製備固態氧化物燃料電池Ni/CeO2陽極之製程與性質探討〔碩士論文，國立臺北科技大學〕。華藝線上圖書館。https://doi.org/10.6841/NTUT.2010.00242
- 王宜達、蕭逸（2019）。Investigation of the anodization of Ti electrode onto corrosion resistance in Electro-Fenton systems。防蝕工程，33(4)，26-35。https://doi.org/10.6376/JCCE.201912_33(4).0004
- 許凱博（2020）。The Preparation of Iron Oxide Negative Electrode of Supercapacitors by Using Electrospinning〔碩士論文，義守大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0074-0409202015473300