利用薄滴塗聚合物改善奈米顆粒堆疊觸媒層以提升高溫質子交換膜燃料電池之性能

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姓名

莊雅潔(Ya-Chieh Chuang) 查詢紙本館藏

畢業系所

機械工程學系在職專班

論文名稱

利用薄滴塗聚合物改善奈米顆粒堆疊觸媒層以提升高溫質子交換膜燃料電池之性能
(Performance Enhancement of HT-PEMFC by Using Drop-Casted Polymer to Improve Nanoparticle-stack Catalyst Layer)

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至系統瀏覽論文 (2029-1-30以後開放)

摘要(中)

為了降低高溫質子交換膜燃料電池(high temperature proton exchange membrane fuel cells, HT-PEMFC)中的觸媒擔載量及提高電流密度，本研究使用脈衝雷射沉積法(pulsed laser deposition, PLD)在氣體擴散層的微孔層表面沉積奈米顆粒堆疊觸媒層，並以滴塗(drop-casting)高分子填充劑修飾觸媒層，提升質子傳輸與氣體傳輸的能力，以降低電荷轉移阻抗。
本研究先針對觸媒層填充物種類進行研究，接著再針對聚苯並咪唑膜磷酸的流失進行探討，避免過高的磷酸摻雜導致溢出磷酸造成的酸淹，以及利用無裂紋碳紙限制磷酸滲出之特性，減少磷酸自質子交換膜中流失至MEA外。經優化後，滴塗50 nm摻雜磷酸之自含微孔高分子(PA:PIM-1)觸媒層填充物與未進行觸媒修飾之燃料電池相比，在140 oC、0.6 V的測試條件下，燃料電池電流密度可提高81%。

摘要(英)

To reduce the catalyst loading and increase the current density of high-temperature proton exchange membrane fuel cell (HT-PEMFC), this study employs pulsed laser deposition (PLD) to deposit nanoparticle-stacked catalyst layers on the surface of the microporous layer. The catalyst layer is further modified with a polymer filler through drop-casting to decrease charge transfer resistance vis improved proton and gas transport capabilities.
The research begins by studying the types of fillers for the catalyst layer. Subsequently, a detailed examination is conducted on the loss of phosphoric acid from the polybenzimidazole membrane to avoid acid flooding caused by excessive phosphoric acid ,and use crack-free carbon paper to restrict phosphoric acid leakage from the proton exchange membrane to exterior of MEA. Following optimization, the drop-casted 50 nm PA:PIM-1 as catalyst layer filler, compared to the unmodified catalyst layer, demonstrates a 81% increase in current density at 0.6 V and 140 °C.

關鍵字(中)

★ 高溫型質子交換膜燃料電池
★ 脈衝雷射沉積
★ 觸媒減量
★ 交聯
★ 自含微孔高分子

關鍵字(英)

★ High Temperature Proton Exchange Membrane Fuel Cell
★ Pulsed Laser Deposition
★ Catalyst Reduction
★ Crosslinking
★ Polymers of Intrinsic Microporosity

論文目次

中文摘要 i
Abstract ii
致謝 iii
目錄 iv
圖目錄 viii
表目錄 xii
符號說明 xiii
第一章緒論 1
1-1 前言 1
1-2　　質子交換膜燃料電池 3
1-2-1　燃料電池種類 3
1-2-2　質子交換膜燃料電池工作原理 5
1-2-3　質子交換膜燃料電池組成結構 8
1-3　　觸媒層製備與發展 12
1-3-1　製備觸媒層之方式 12
1-3-2　以不同製程製備燃料電池觸媒層之性能比較 21
1-4　　研究動機與目的 23
第二章文獻回顧 24
2-1　　高溫型質子交換膜燃料電池 24
2-2　　高溫型質子交換膜之研究 27
2-3　　低觸媒載量與觸媒層介面改善高溫型質子交換膜燃料電池 30
2-4　　奈米顆粒堆疊超薄觸媒層 33
2-5　　觸媒層表面的酸淹 36
2-6　　添加交聯劑增加磷酸滯留能力 38
2-7　　裂紋影響高溫質子交換膜燃料電池的磷酸流失 39
第三章實驗方法與設備 41
3-1　　實驗架構流程 41
3-1-1　實驗所需之材料 42
3-2　　表面微結構分析 43
3-2-1　場發射掃描式電子顯微鏡 43
3-3　　磷酸摻雜高溫型質子交換膜 44
3-3-1　商用PBI膜浸泡磷酸製備PA-PBI膜方法與流程 44
3-4　　脈衝雷射沉積系統 46
3-4-1　脈衝雷射系統架設 46
3-4-2　奈米觸媒樣品製備參數 48
3-5　　滴塗觸媒層填充物製備 49
3-5-1　觸媒層填充物滴塗製程 49
3-5-2　滴塗溶液製備 50
3-6　　膜電極組製備 51
3-7　　單電池組裝過程 51
3-8　　高溫型燃料電池測試平台系統 51
3-8-1　燃料電池極化現象 54
3-8-2　燃料電池電化學交流阻抗頻譜分析 57
第四章結果與討論 61
4-1　　不同BADGE:PBI厚度的電池性能 61
4-1-1　不同BADGE:PBI厚度之表面形貌 61
4-1-2　不同BADGE:PBI厚度之燃料電池性能比較 62
4-2　　使用多孔高分子作為觸媒填充劑 66
4-2-1　不同觸媒層填充物之燃料電池性能比較 66
4-3　　優化PIM-1中磷酸摻雜量改善電池性能 69
4-3-1　PIM-1中磷不同酸摻雜量之燃料電池性能比較 69
4-4　　優化PA:PIM滴塗厚度的電池性能 72
4-4-1　不同PA:PIM滴塗厚度之燃料電池性能比較 72
4-5　　使用不同碳紙進行電池性能之優化 75
4-5-1　不同碳紙之表面形貌 75
4-5-2 不同碳紙之燃料電池性能比較 76
4-6　　優化聚苯並咪唑膜中之磷酸摻雜量 79
第五章結論與未來規劃 84
5-1　　結論 84
5-2　　未來展望 86
第六章參考文獻 87

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指導教授

曾重仁(Chung-jen Tseng)

審核日期

2024-1-30

推文