https://scholars.lib.ntu.edu.tw/handle/123456789/62820
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor | 郭景宗 | en |
dc.contributor | 臺灣大學:機械工程學研究所 | zh_TW |
dc.contributor.author | 方議樂 | zh |
dc.contributor.author | Fang, I-Le | en |
dc.creator | 方議樂 | zh |
dc.creator | Fang, I-Le | en |
dc.date | 2007 | en |
dc.date.accessioned | 2007-11-28T08:05:31Z | - |
dc.date.accessioned | 2018-06-28T17:09:15Z | - |
dc.date.available | 2007-11-28T08:05:31Z | - |
dc.date.available | 2018-06-28T17:09:15Z | - |
dc.date.issued | 2007 | - |
dc.identifier | zh-TW | en |
dc.identifier.uri | http://ntur.lib.ntu.edu.tw//handle/246246/61392 | - |
dc.description.abstract | 本研究旨在設計並改良質子交換膜型純水電解器,藉以得到氫氣,以供燃料電池使用。首先決定流道的型式以及材料,流道型式以計算流體力學軟體-FLUENT,進行分析,進而了解流場性質,以格點式流場做為最終設計。在材料的選用上,根據電化學電位以及電解環境,選擇抗腐蝕與抗氧化的鈦材作為流道板材料。整體實驗以改善單電極的性能開始,經由改變觸媒漿料的配方、質子交換膜種類、電極板夾持型式以及陽極觸媒使用量等變因,希冀能掌握單電極電解器的各項控制變因,以作為提升多電極電解器性能的依據。文中針對各種變因所造成的性能差異,以電壓效率、法拉第效率以及能源轉換效率作為性能比較的指標,深入討論之。 為了獲得足夠的產氫量,組裝多電極電解器是必然的趨勢。多電極電解器有其設計重點,特別是在流道的配置、氣體密封效果以及穩定的單電極性能等方面,須審慎設計。本研究初步的製作出三個膜電極組所堆疊的多電極電解器,從分別測定的膜電極組端電壓來看,每片膜電極組的性能相類似,而在氫氣的產生方面,純度經由氣相層析儀的測定,可知氫氣純度達99.84%;產氫量方面,以法拉第效率作為依據,也高達98%以上,因此可知多電極電解器之氣密效果良好,流場排出氣體的效果順暢。 本實驗所設計的電解器最佳性能為: 單電極:200mA/cm2@2V,電壓效率74%,產氫量76ml/min,法拉第效率98.55%,能源轉換效率73.16% 多電極:200mA/cm2@6.91V,電壓效率64.25%,產氫量228ml/min,法拉第效率98.83%,能源轉換效率63.47% | zh_TW |
dc.description.abstract | In this study, the main point is to develop and improve the efficiency of a SPE-type water electrolyzer. The design process starts with choosing the type of flow field and the material of electrode. First, verify the flow field by CFD software-FLUENT the grid type flow field forms a uniform flow field; Second, according to electrochemistry, a non-corrosive electrode has to be used in the electrolysis process. Titanium is a good electrode material that can stand in acid enviroment and anti-oxidation. So, the titanium plate with grid type flow field has been chosen. In the single-cell test, this study discuss the performance of the electrolyzer with different thickness of the proton exchange membrane, different nafion loading in the catalyst layer, different locking type of titanium plate and different catalyst loading on anode. The performance will be verified by voltage efficiency, Faraday efficiency and energy conversion efficiency. The multi-cell electrolyzer is designed on the basis of single-cell electrolyzer. A three-cell electrolyzer is built. Each cell’s performance has been shown by its IV-Curve. The product (hydrogen gas) has the purity 99.84%, which is tested by gas chromatograph(GC) and the Faraday efficiency is up to 98%. From the result of high purity and high Faraday efficiency of product gas, good sealing and unhindered flow field can be confirmed. The optimum performance of the electrolyzer in this study is: Single cell: 200mA/cm2@2V, voltage efficiency 74%, hydrogen production rate 76ml/min, Faraday efficiency 98.55%, energy conversion efficiency 73.16% Three-cell stack: 200mA/cm2@6.91V, voltage efficiency 64.25%, hydrogen production rate 228ml/min, Faraday efficiency 98.83%, energy conversion efficiency 63.47% | en |
dc.description.tableofcontents | 口試委員會審定書………………………………………………………….………… i 誌謝……………………………………………………………………….……………ii 中文摘要………………………………………………………………………………iii 英文摘要……………………………………………………………………………....iv 第一章 序論 1 1.1前言 1 1.2製氫方法 3 1.3研究動機與目的 5 第二章 理論分析與文獻回顧 6 2.1 多電極組電解器運作原理 6 2.2 基本構造 7 2.2.1 流道板性質 8 2.2.2電流搜集層材料選擇 8 2.3 膜電極組(MEA, Membrane-electrode assembly) 9 2.3.1 固態質子交換膜 9 2.3.2陽極觸媒材料之選擇 10 2.3.3陰極觸媒材料之選擇 12 2.4 電解器氣密性 13 2.5 流道決定的電導度 14 2.6水電解反應參數之研究 14 2.6.1 溫度對電解反應之影響 15 2.6.2 壓力對電解反應之影響 16 2.7性能指標 18 2.8文獻回顧 21 2.8.1電解器之數值模擬 21 2.8.2電解器之設計與實驗 21 2.8.3觸媒材料 23 2.8.4太陽能產氫系統 24 第三章 多電極組SPE電解器之元件設計分析及製造 25 3.1 SPE電解器之組成元件 25 3.2 流道設計與計算流體力學(CFD)分析 30 3.2.1 多電極電解器之電極與流道連接設計 31 3.2.2 CFD模擬分析之參數設定與結果 33 3.3.1 膜電極組之組成元件 36 3.3.2 膜電極組製作程序 38 3.4 設計目標 40 第四章 實驗平台設備及方法 41 4.1 實驗設備 41 4.1.1 產氫系統 42 4.1.2 壓力控制系統 43 4.1.3 水循環系統 44 4.1.4 純化系統 46 4.1.5 測試儀器及數據擷取系統 46 4.1.6加壓系統 48 4.2實驗步驟 49 4.2.1注意事項 49 4.2.2實驗操作流程 50 第五章 實驗結果與討論 52 5.1氣體純度檢驗 52 5.2單電極電解器性能測試 54 5.2.1質子交換膜厚度對性能的影響 54 5.2.2漿料中dry nafion的量對性能的影響 55 5.2.3鈦電極板夾持型式對性能的影響 56 5.2.4外加扭力對性能的影響 58 5.2.5陽極觸媒量對性能的影響 59 5.3多電極電解器性能測試 60 5.4充氫加壓系統測試 61 5.5 自製的電解器與文獻的性能比較 62 第六章 結論與建議 77 參考文獻 80 | zh_TW |
dc.language | zh-TW | en |
dc.language.iso | en_US | - |
dc.subject | 純水電解器 | en |
dc.subject | 固態電解質 | en |
dc.subject | 氫氣產生器 | en |
dc.subject | water electrolyzer | en |
dc.subject | solid polymer electrolyte | en |
dc.subject | hydrogen generator | en |
dc.subject.classification | [SDGs]SDG7 | - |
dc.title | 多電極質子交換膜型純水電解產氫器之設計製造研究 | zh |
dc.title | Fabrication and analysis of multi-cell Hydrogen Generator System with proton exchange membrane water electrolyzer | en |
dc.type | thesis | en |
dc.relation.reference | [1] R. A. Engel et al., “Development of a High Pressure PEM Electrolyzr: Enabling Seasonal Storage of Renewable Energy”, 15th Annual U.S. Hydrogen Conference, 2004, Los Angeles, CA. [2] J. Pettersson et al. “A review of the latest developments in electrodes for unitised regenerative polymer electrolyte fuel cells”, J. Power Sources, 157, p 28–34, 2006 [3] E. Rasten et al, “Electrocatalysis in water electrolysis with solid polymer electrolyte” J. Electrochimica Acta, 48, p3945-3952, 2003 [4] H. Takenaka et al., “Solid Polymer Electrolyte Water Electrolysis”, Int. J. Hydrogen Energy, 7(5), p397-403, 1982 [5] M. S. Wilson, S. Gottesfeld, “High Performance Catalyzed Membrane of Ultra-low Pt Loading for Polymer Electrolyte Fuel Cell”, J. Electrochem, 139(2), 1992. [6] T. Ioroi et al., “Influence of PTFE Coating on Gas Diffusion Backing for Unitized Regenerative Polymer Electrolyte Fuel Cells”, J. Power Sources, 124, 2003, [7] P. Choi, D.G. Bessarabov, R. Datta, “A Simple Model for Solid Polymer Electrolyte (SPE) Water Electrolysis”, Solid State Ionics, 175(1-4), p535-539, 2004 [8] K. Kinoshita, “Electrochemical Oxygen Technology”, 1992, New York, Wiley. [9] W. Vielstich, A. Lamm, H.A. Gasteiger, “Handbook of Fuel Cell: Fundamentals, Technology and Applications, Vol. 2”, 2003, Chichester, England, Hoboken, Wiley. [10] S. D. Yim et al., “Optimization of Bifunctional Electrocatalyst for PEM Unitized Regenerative Fuel Cell”, Electrochimica Acta, 50(2-3), p709-714, 2004 [11] 田福助 “電化學” 五洲出板社 , 民國71年 [12] J. M. H. L. Senger, M. Klein, J.S. Gallagher, “Pressure–Volume-Temperature Relationship of Gases: Virial Coefficients”, Arnold Engineering Development Center Report TR-71-39, 1971. [13] O. Ulleberg, “Modeling of advanced alkaline Electrolyzer: a System Simulation Approach”, Int. J. Hydrogen Energy, 28, p21-33, 2003 [14] S. Dutta et al ”Numerical analysis of Laminar Flow and Heat Transfer in a High Temperature Electrolyzer”, Int. J. Hydrogen Energy, 22, p.211-219, 1997 [15] K. Onda et al., “Performance Analysis of Polymer-Electrolyte Water Electrolysis Cell at a Small-Unit Test Cell and Performance Prediction of Large Stacked Cell”, J. Electrochem, 149(8), A1069-A1078, 2002 [16] F. Buteau et al., “Development status of an advanced electrolyzer”, Int. J. Hydrogen Energy, 18, 9, p727-733, 1993 [17] P. Millet, F. Andolfatto, R. Durand, “Design and Performance of a Solid Polymer Electrolyte Water Electrolyzer”, Int. J. Hydrogen Energy, 21(2), p87-93, 1996 [18] C.A. Schug, “Operational Characteristics of High-Pressure, High-Efficiency Water-Hydrogen-Electrolysis”, Int. J. Hydrogen Energy, 23(12), 1998, p1113-1120.. [19] T. Oi, Y. Sakaki, “Optimum hydrogen generation capacity and current density of the PEM-type water electrolyzer operated only during the off-peak period of electricity”, J. Power Sources, 129, p229–237, 2004 [20] Y. Ando, T. Tanaka, “Proposal for a new system for simultaneous production of hydrogen and hydrogen peroxide by water electrolysis”, Int. J. Hydrogen Energy, 29, p1349–1354, 2004 [21] M. Sakurai, S. Ueno, “Preliminary analysis of transportation cost of nuclear off-peak power for hydrogen production based on water electrolysis”, Int. J. Hydrogen Energy, 31, p2378 – 2385, 2006 [22] A. Marahall et al., “Hydrogen production by advanced proton exchange membrane (PEM) water electrolysers-Reduced energy consumption by improved electrocatalysis”, Energy, 32, Issue 4, p431-436, 2007 [23] H. Ma, et al., “Study of ruthenium oxide catalyst for electrocatalytic performance in oxygen evolution”, J. Molecular Catalysis A: Chemical, 247, p7–13, 2006 [24] P. Hollmuller et al, “Evaluation of a 5kwP photovoltaic hydrogen production and storage installation for a residential home in Switzerland” , Int. J. Hydrogen Energy, 25, p.97-109, 2000 [25] M.A.H. Abdallah et al, ”Solar hydrogen energy system for Egypt.” Int. J Hydrogen Energy, 24(2), p87-93, 1999 [26] D. Shapiro et al., “Solar-powered regenerative PEM electrolyzer/fuel cell system”, Solar energy, 79, p544-550, 2005 [27] 許盈盈 “固態電解質純水電解器產氫元件之設計與性能分析”, 國立台灣大學機械工程研究所 民國93年 [28] 蔡明璋 “多電極固態薄膜型電解質之氫氣產生器製造與性能分析” 國立台灣大學機械工程研究所 民國95年 [29] F. Buteau et al,“Development status of an advanced electrolyzer” , Int. J. Hydrogen Energy., 18, p727-733, 1993 [30] 周保志 “太陽能氫氣產生器產氫元件之效率分析”, 國立台灣大學機械工程研究所 民國九十二年. [31] M. Kato, S. Maezawa, K. Sato, “Polymer-Electrolyte Water Electrolysis”, Applied Energy, 59(4), p261-271, 1998 [32] 林義傑 “大面積質子交換膜燃料電池膜電極組直接塗佈製造技術研究” 國立台灣大學機械工程研究所 民國95年 [33] 陳沛伸”太陽能氫氣產生器儲氫加壓研究” 國立台灣大學機械工程研究所, 民國92年 [34] R. L. LeRoy, C. T. Bowen, D. J. LeRoy, “The Thermodynamics of Aqueous Water Electrolysis”, J. Electrochem, 127, 1980. [35] L. J. Nutall, J. H. Russell, “Solid Polymer Electrolyte Water Electrolysis - Development Status”, Int. J. Hydrogen Energy, 5, 1980, p75-84. [36] F. Climent, R.Capellades, “Anodic oxidation of titanium at low voltages”, Materials Letters, 18, p263-268, 1994 [37] Y. T. Sul et al., “The electrochemical oxide growth behaviour on titanium in acid and alkaline electrolytes”, Medical Engineering Physics, 23, p329-346, 2001 [38] http://en.wikipedia.org/wiki/Standard_electrode_potential_%28data_page%29 | zh_TW |
item.openairecristype | http://purl.org/coar/resource_type/c_46ec | - |
item.openairetype | thesis | - |
item.languageiso639-1 | en_US | - |
item.grantfulltext | none | - |
item.cerifentitytype | Publications | - |
item.fulltext | no fulltext | - |
顯示於: | 機械工程學系 |
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