Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/5759
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dc.contributor謝樹木zh_TW
dc.contributorShuh-Muh Shiehen_US
dc.contributor曾惠馨zh_TW
dc.contributorHui-Hsin Tsengen_US
dc.contributor.advisor魏銘彥zh_TW
dc.contributor.advisorMing-Yen, Weyen_US
dc.contributor.author林松茂zh_TW
dc.contributor.authorLin, Sung-Maoen_US
dc.contributor.other中興大學zh_TW
dc.date2011zh_TW
dc.date.accessioned2014-06-06T06:35:33Z-
dc.date.available2014-06-06T06:35:33Z-
dc.identifierU0005-2008201022410400zh_TW
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dc.identifier.urihttp://hdl.handle.net/11455/5759-
dc.description.abstract摘要 質子交換膜燃料電池在陽極觸媒製備上,常以Pt貴金屬用來製備觸媒,但是價格昂貴且數量極其有限。而燃料電池可能受到硫化物毒化使得效能降低,硫化物中尤以H2S的毒化現象最為嚴重。同時近年來的研究中亦發現,以雙金屬合金觸媒抵抗毒化現象的觸媒正被積極的發展中。因此,本研究將選擇價格較低的一般過渡金屬如Zn、V、Cr與Ni等金屬,分別與Pt貴金屬結合製備成雙金屬觸媒,再以鹼金屬Na做進一步的觸媒改質,最後以氫氣還原檢視觸媒毒化後還原之能力。 實驗結果顯示利用針筒塗佈搭配超音波震盪可以較均勻將Pt觸媒分佈在觸媒層上並減少流失。經過電池性能測試於不同操作溫度影響實驗中發現,提升溫度將抑制陰極氧氣在燃料電池中的傳輸而導致效能降低。在室溫下不同金屬觸媒其燃料電池效能大小分別為Pt > Pt-Zn > Pt-V > Pt-Cr > Pt-Ni。另外,在H2S毒化的實驗中發現5ppm H2S會使的雙金屬觸媒性能大幅降低,而選用Pt/Pt、Pt/Pt-Zn觸媒在加入鹼金屬後顯示添加鹼金屬對Pt/Pt-Na可以提升觸媒毒化後還原的效能,而在對於Pt/Pt-Zn-Na觸媒其抵抗能力並不明顯,推測添加鹼金屬於一般過渡金屬上之抵抗H2S之效能並不顯著。zh_TW
dc.description.abstractABSTRACT Nobel metals such as Pt are used to be prepared as the catalyst on the anode in proton exchange membrane fuel cell (PEMFC). However, the amount limitation and price of Pt shound be taken into consideration of its usage. The sulfides exist in feeding fuel may influence the efficiency of PEMFC, especially H2S. Recently, developing the electrocatalyst with high H2S tolerance is considered as an important issue, and one of the effective ways is the application of bimetallic catalysts. Accordingly, the transition metals such as Zn, V, Cr and Ni are used to combine with Pt forming bimetallic catalysts on the anode in PEMFC. Then, the addition of alkali metal (Na) is applied to enhance the H2S torelence in fuel cells. Finally, the Pt-related electrodes are recoveried by H2 after they are poisoned by H2S. The aim of this study is to find an eletrocatalyst with high H2S tolerance, and it can be recoveried by H2 after H2S poisoning. Based on the experimental tests, the Pt catalysts can be uniformly dispersed on the carbon paper by using syringe injection and sonication. On the other hand, increasing the cell temperature causes the decrease of performance of electrocatalyst because of the transportation of oxygen in cathode is affected. Moreover, the result of various bimetallic catalysts at room temperature (35℃) presents the sequence of Pt > Pt-Zn > Pt-V > Pt-Cr > Pt-Ni. However, the experimental results illustrate that H2S (5ppm) can strongly influence and reduce the efficiency of PEMFC. After addition of alkali metal (Na), the Pt/Pt-Na catalyst can be recovered by H2 significantly, but less effect of alkali metal on the Pt/Pt-Zn-Na catalyst.en_US
dc.description.tableofcontents目錄 摘要 I ABSTRACT II 目錄 III 圖目錄 VI 表目錄 VIII 第一章 前言 9 1-1研究緣起 9 1-2研究目的 10 1-3研究架構與內容 11 第二章 文獻回顧 12 2-1 能源發展 12 2-1-1 燃料電池的誕生 12 2-1-2 燃料電池的特性 13 2-1-3燃料電池技術發展背景 13 2- 2質子交換膜燃料電池效能 23 2-2-1 質子交換膜燃料電池性能 23 2-2-2質子交換膜燃料電池操作溫度影響 25 2-3質子交換膜燃料電池觸媒性能 28 2-3-1 觸媒性能 28 2-3-2 雙金屬合金觸媒 32 2-3-3 鹼金屬促進劑作用 33 2-4 質子交換膜燃料電池硫化物毒化現象 35 2-4-1 燃料中的不純物質 35 2-4-2 H2S毒化 35 2-4-3 解決H2S毒化的問題方式 39 2-5 文獻總結與研究方向 39 第三章 實驗設備及方法 41 3-1 實驗架構 41 3-2 實驗流程 41 3-3 觸媒之製備 46 3-3-1 碳擔體之前處理程序 46 3-3-2 觸媒之製備 46 3-3-3實驗分析儀器 48 3-3-3-1場發射掃描式電子顯微鏡 48 3-3-3-2 成分分析X射線能量散佈分析儀 48 3-3-3-3 穿透式電子顯微鏡 48 3-4 膜電極組的製作 49 3-4-1質子交換膜的處理 49 3-4-2 膜電極熱壓 49 3-4-3 實驗設備與方法 51 第四章 結果與討論 53 4-1 膜電極組性能測試分析 53 4-1-1 觸媒負載量之影響 53 4-2改質Pt之雙金屬觸媒性能測試分析 56 4-2-1 雙金屬觸媒,在不同溫度下的性能測試 56 4-3 雙金屬觸媒對H2S抵抗性能測試分析 61 4-4 添加鹼金屬觸媒提升抵抗H2S性能測試分析 65 4-5 H2S毒化後之觸媒通入氫氣還原性能測試分析 71 4-6 EDS組成分析 76 4-7 TEM微結構分析 78 第五章 結論與建議 79 5-1 結論 79 5-2 未來研究建議 80 參考文獻 81 附錄 90zh_TW
dc.language.isoen_USzh_TW
dc.publisher環境工程學系所zh_TW
dc.relation.urihttp://www.airitilibrary.com/Publication/alDetailedMesh1?DocID=U0005-2008201022410400en_US
dc.subjectProton exchange membrane fuel cellen_US
dc.subject質子交換膜燃料電池zh_TW
dc.subjectElectrode catalystsen_US
dc.subjectBimetallic catalystsen_US
dc.subjectH2Sen_US
dc.subject電極觸媒zh_TW
dc.subject雙金屬觸媒zh_TW
dc.subject硫化氫zh_TW
dc.title改質鉑電極觸媒於質子交換膜燃料電池抵抗硫化氫之研究zh_TW
dc.titleEnhancing the H2S Tolerance in Proton Membrane Fuel Cells (PMFC) by Modified Pt Electrocatalystsen_US
dc.typeThesis and Dissertationzh_TW
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