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研究生： 曾聖修
Sheng-Hsiu Tseng
論文名稱： 酚醛樹脂/六羰鉬製作碳/碳奈米複合材料對燃料電池雙極板之機械及電性質研究
Mechanical and Electrical Properties of Bipolar Plate of Fuel Cell Mixed with Utillize Phenolic Resin/Molybdenum Hexacarbonyl To Prepare Carbon/Carbon Nanocomposites
指導教授： 葉銘泉
Ming-Chuen Yip
口試委員:
學位類別： 碩士
Master
系所名稱： 工學院 - 動力機械工程學系
Department of Power Mechanical Engineering
論文出版年： 2008
畢業學年度： 96
語文別： 中文
論文頁數： 81
中文關鍵詞： 雙極板
外文關鍵詞： bipolar plate
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    • 本研究旨以固定酚醛樹脂、石墨及碳纖維之含量，添加不同比例六羰鉬後，再經過碳化製程，最後探討其機械、熱與電性質。結果顯示，在經過碳化製程後，抗折強度與衝擊強度呈現下降，空孔率呈現提升，導電性質有明顯大幅的提升，熱重損失大幅減少，導熱性質提升，氣體測漏皆為不漏氣，密度有些微下降，所有材料皆為難燃性質，熱膨脹係數明顯下降，最後再由破壞斷面觀察知，材料的破壞有碳纖維被拉出，且因部份碳纖維與酚醛樹脂之鍵結力不足，因此造成機械強度的不足，而酚醛樹脂在經過碳化製程中，會產生劇烈的收縮，會有應力集中現象的產生，且碳化製程中會產生四十餘種以上之物質，在其物質逸出的同時，會產生孔隙，因此吻合空孔提升，密度下降之結果。

    目錄 目錄.............................................................................................................I 表目錄.....................................................................................................III 圖目錄......................................................................................................IV 第一章 緒論..............................................................................................1 1-1 前言.................................................................................................1 1-2 燃料電池基本原理.........................................................................2 1-3 燃料電池分類.................................................................................4 第二章 研究目的與內容..........................................................................8 2-1 研究目的.........................................................................................8 2-2 研究內容.........................................................................................9 第三章 文獻回顧....................................................................................10 3-1 雙極板材料與樹脂系統...............................................................10 3-1-1 石墨雙極板.........................................................................10 3-1-2 金屬雙極板.........................................................................10 3-1-3 複合材料雙極板.................................................................12 3-1-4 熱固性樹脂(thermosetting resin)........................................12 3-1-5 熱塑性樹脂(thermoplastic resin)........................................13 3-2 雙極板加工方式...........................................................................14 3-2-1 塊狀模造成型(bulk molding compound)...........................14 3-2-2 射出成型.............................................................................15 3-3 酚醛樹脂備製與性質...................................................................16 3-3-1 Resol Type 酚醛樹脂...........................................................17 3-3-2 Novolac Type 酚醛樹脂......................................................19 3-4 質子交換膜燃料電池用雙極板基本要求...................................22 3-5 碳化之製備與性質.......................................................................22 3-6 六羰鉬之製備與性質...................................................................25 第四章 實驗流程....................................................................................26 4-1 實驗材料.......................................................................................26 4-2 實驗設備及儀器...........................................................................27 4-3 實驗流程與試片製備...................................................................36 4-4 實驗方法.......................................................................................39 第五章 結果與討論................................................................................47 5-1 導電率測試...................................................................................47 5-2 空孔率測試...................................................................................48 5-3 密度測試.......................................................................................50 5-4 衝擊強度測試...............................................................................52 5-5 抗折強度測試...............................................................................53 5-6 熱膨脹性質...................................................................................55 5-7 熱傳導測試...................................................................................57 5-8 熱重分析.......................................................................................59 5-9 難燃測試.......................................................................................60 5-10 氣體滲透率測試.........................................................................61 5-11 型態學分析.................................................................................63 5-12 拉曼光譜分析.............................................................................72 第六章 結論............................................................................................73 參考文獻..................................................................................................75 表目錄 表1-1 燃料電池分類表............................................................................6 表4-1 配方表..........................................................................................37 表4-2 標準垂直燃燒法..........................................................................43 表4-3 厚度修正表[61]............................................................................45 表4-4 尺寸修正表[63]............................................................................45 表5-1 碳化前添加不同比例六羰鉬之導電率......................................47 表5-2 碳化後添加不同比例六羰鉬之導電率......................................48 表5-3 碳化前添加不同比例六羰鉬之空孔率......................................49 表5-4 碳化後添加不同比例六羰鉬之空孔率......................................49 表5-5 碳化前添加不同比例六羰鉬之密度..........................................51 表5-6 碳化後添加不同比例六羰鉬之密度..........................................51 表5-7 碳化前添加不同比例六羰鉬之衝擊強度..................................52 表5-8 碳化後添加不同比例六羰鉬之衝擊強度..................................53 表5-9 碳化前添加不同比例六羰鉬之抗折強度..................................54 表5-10 碳化後添加不同比例六羰鉬之抗折強度................................54 表5-11 碳化前添加不同比例六羰鉬之熱膨脹性質............................56 表5-12 碳化後添加不同比例六羰鉬之熱膨脹性質............................56 表5-13 碳化前添加不同比例六羰鉬之熱傳導性質............................58 表5-14 碳化後添加不同比例六羰鉬之熱傳導性質............................58 表5-15 碳化前添加不同比例六羰鉬之難燃性質................................61 表5-16 碳化後添加不同比例六羰鉬之難燃性質................................61 表5-17 碳化前添加不同比例六羰鉬之氣體滲透性質........................62 表5-18 碳化後添加不同比例六羰鉬之氣體滲透性質........................62 圖目錄 圖1-1 燃料電池原理[2]............................................................................3 圖1-2 PEMFC單電池結構[3]...................................................................7 圖1-3 質子交換膜燃料電池....................................................................7 圖3-1 ®Sigracet PPG8 射出成型法[33]................................................15 圖3-2 ®Sigracet BBP4射出成型法[33].................................................16 圖4-1 BMC捏合機..................................................................................27 圖4-2 熱重分析儀..................................................................................28 圖4-3 熱壓成型機..................................................................................29 圖4-4 切割機..........................................................................................29 圖4-5 擺錘式衝擊試驗機......................................................................30 圖4-6 氦氣測漏儀..................................................................................31 圖4-7 四點探針電阻儀..........................................................................31 圖4-8 場發射掃描式電子顯微鏡(FE-SEM).........................................32 圖4-9 碳化爐..........................................................................................32 圖4-10 水平/垂直燃料測試儀...............................................................33 圖4-11 極限氧氣指數測試儀................................................................33 圖4-12 電子分析天平............................................................................34 圖4-13 熱機械分析儀............................................................................35 圖4-14 拉曼光譜分析儀........................................................................35 圖4-15 實驗流程圖................................................................................37 圖4-16 碳化流程圖................................................................................38 圖4-17 經熱壓成型雙極板尺寸為20*20cm.........................................38 圖4-18 耐衝擊強度測試試片尺寸圖[60]..............................................39 圖4-19 衝擊試驗校正圖........................................................................40 圖4-20 彎曲強度測試試片尺寸圖[60]..................................................40 圖4-21 氦氣測漏示意圖........................................................................42 圖4-22 四點探針儀[61]..........................................................................46 圖4-23 四點探針之距離修正定義[61]..................................................46 圖4-24 使用四點探針法測量體積電阻時使用之校正因數圖 [62]....46 圖5-1 碳化前後添加不同比例六羰鉬之導電率比較圖......................48 圖5-2 碳化前後添加不同比例六羰鉬之空孔率比較圖......................50 圖5-3 碳化前後添加不同比例六羰鉬之密度比較圖..........................51 圖5-4 碳化前後添加不同比例六羰鉬之衝擊強度比較圖..................53 圖5-5 碳化前後添加不同比例六羰鉬之抗折強度比較圖..................55 圖5-6 碳化前後添加不同比例六羰鉬之熱膨脹性質比較圖..............57 圖5-7 碳化前後添加不同比例六羰鉬之熱傳導比較圖......................58 圖5-8 碳化前添加不同比例六羰鉬之熱重分析比較圖......................59 圖5-9 碳化後添加不同比例六羰鉬之熱重分析比較圖......................60 圖5-10 六羰鉬粒子SEM圖...................................................................64 圖5-11表面元素成份定性-定量分析圖................................................68 圖5-12 碳化前添加0phr六羰鉬之破壞斷面圖....................................65 圖5-13 碳化前添加0.1phr六羰鉬之破壞斷面圖.................................65 圖5-14 碳化前添加0.3phr六羰鉬之破壞斷面圖.................................66 圖5-15 碳化前添加0.5phr六羰鉬之破壞斷面圖.................................66 圖5-16 碳化前添加0.7phr六羰鉬之破壞斷面圖.................................67 圖5-17 碳化前添加0.85phr六羰鉬之破壞斷面圖...............................67 圖5-18 碳化前添加1phr六羰鉬之破壞斷面圖....................................68 圖5-19 碳化後添加0phr六羰鉬之破壞斷面圖....................................68 圖5-20 碳化後添加0.1phr六羰鉬之破壞斷面圖.................................69 圖5-21 碳化後添加0.3phr六羰鉬之破壞斷面圖.................................69 圖5-22 碳化後添加0.5phr六羰鉬之破壞斷面圖.................................70 圖5-23 碳化後添加0.7phr六羰鉬之破壞斷面圖.................................70 圖5-24 碳化後添加0.85phr六羰鉬之破壞斷面圖...............................71 圖5-25 碳化後添加1phr六羰鉬之破壞斷面圖....................................71 圖5-26 碳化前後之拉曼光譜圖............................................................72

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