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

NCUIR > Engineering College > Executive Master of Mechanical Engineering > Electronic Thesis & Dissertation > Item 987654321/93625

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/93625

Title:	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
Authors:	莊雅潔;Chuang, Ya-Chieh
Contributors:	機械工程學系在職專班
Keywords:	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;High Temperature Proton Exchange Membrane Fuel Cell;Pulsed Laser Deposition;Catalyst Reduction;Crosslinking;Polymers of Intrinsic Microporosity
Date:	2024-01-30
Issue Date:	2024-09-19 17:22:52 (UTC+8)
Publisher:	國立中央大學
Abstract:	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%。;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.
Appears in Collections:	[Executive Master of Mechanical Engineering] Electronic Thesis & Dissertation

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