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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 陳發林(Falin Chen) | |
| dc.contributor.author | Hung-Yi Lin | en |
| dc.contributor.author | 林弘益 | zh_TW |
| dc.date.accessioned | 2021-06-08T06:06:21Z | - |
| dc.date.copyright | 2007-07-24 | |
| dc.date.issued | 2007 | |
| dc.date.submitted | 2007-07-20 | |
| dc.identifier.citation | [1] J. Larmine, A. Dicks, Fuel Cell Systems Explained, 2nd ed. John Wiley & Sons, Chichester, (2003)
[2] M. Shinji, M. Mohamed, M. Toshiyuki, “MEMS-based design and fabrication of a new concept micro direct methanol fuel cell (μ-DMFC),” J. Electrochemistry Communications, 6 (6) (2004) 562-565 [3] D.R. Lide, CRC handbook of chemistry and physics, CRC press, (1975) [4] G.B. Jung, A. Su, C.H. Tu, “Effects of cathode flow fields on direct methanol fuel cell-simulation study,” J. Power Sources, In Press (2007) [5] W. Vielstich, H.A. Gasteiger, A. Lamm, Handbook of Fuel Cells- Fundamentals Technology and Applications, John Wiley & Sons, (2003) [6] E.R. Choban, P. Waszczuk, P.J.A. Kenis, “Characterization of limiting factors in laminar flow-based membraneless microfuel cells,” J. Electrochemical and Solid-State Letters, 8 (7) (2005) 348-352 [7] F.B. Weng, A. Su, G.B. Jung, “Numerical prediction of concentration and current distributions in PEMFC,” J. Power Sources, 145 (2) (2005) 546-554 [8] www.engnetbase.com, fuel cell technology handbook, online [9] D. Ilic, K. Holl, P. Birke, “Fuel cells and batteries: competition or separate paths?,” J. Power Sources, 155 (1) (2006) 72-76 [10] D.M. Bernardi, “Water-balance calculations for solid-polymer-electrolyte fuel cells,” J. Electrochemical society, 137 (11) (1990) 3344-3350 [11] D.M. Bernardi, M.W. Verbrugge, “Mathematical model of a gas diffusion electrode bonded to a polymer electrolyte,” J. AIChE, 37 (8) (1991) 1151-1163 [12] D.M. Bernardi and M.W. Verbrugge “A mathematical model of the solid-polymer-electrolyte fuel cell,” J. Electrochemical society, 139 (9) (1992) 2477-2491 [13] M.A.A. Rahim, M.W. Khalin, H.B. Hassan, “Platinum-tin alloy electrodes for direct methanol fuel cells,” J. Applied Electrochemistry, 30 (10) (2000) 1151-1155 [14] A.A. Kulikovsky, “Two-dimensional numerical modelling of a direct methanol fuel cell,” J. Applied Electrochemistry, 30 (9) (2000) 1005-1014 [15] Z. Qi, A. Kaufman, “Open circuit voltage and methanol crossover in DMFCs,” J. Power Sources, 110 (1) (2002) 177-185 [16] Z. Wei, S. Wang, B. Yi, “Influence of electrode structure on the performance of a direct methanol fuel cell,” J. Power Sources, 106 (1-2) (2002) 364-369 [17] K. Scott, W. Taama, J. Cruickshank, “Performance and modelling of a direct methanol solid polymer electrolyte fuel cell,” J. Power Sources, 65 (1-2) (1997) 159-171 [18] K. Scott, P. Argyropoulos, K. Sundmacher, “A model for the liquid feed direct methanol fuel cell,” J. Electroanalytical Chemistry, 477 (2) (1999) 97-110 [19] A.K. Shukla, C.L. Jackson, K. Scott, “A solid-polymer electrolyte direct methanol fuel cell with a mixed reactant and air anode,” J. Power Sources, 111 (1) (2002) 43-51 [20] J. Ge, H. Liu, “Experimental studies of a direct methanol fuel cell,” J. Power Sources, 142 (1-2) (2005) 56-69 [21] H. Liu, C. Song, L. Zhang, “A review of anode catalysis in the direct methanol fuel cell,” J. Power Sources, 155 (2) (2006) 95-110 [22] R. Dillon, S. Srinivasan, A.S. Arico, “International activities in DMFC R&D: status of technologies and potential applications,” J. Power Sources, 127 (1-2) (2004) 112-126 [23] C.Y. Wang, W.B. Gu, B.Y. Liaw, “Micro-macroscopic coupled modeling of batteries and fuel cells - I. Model development,” J. Electrochemical society, 145 (10) (1998) 3407-3417 [24] R.B. Bird, W. Stewart, E.N. Lightfoot, Transport Phenomena, Wiley, New York, (1960) [25] R.E. Meredith, C.W. Tobias, Advances in Electrochemistry and Electrochemical Engineering 2, Interscience Publishers, New York, (1962) [26] G. Prentice, Electrochemical Engineering Principles, Englewood Cliffs, N.J., (1991) [27] T.E. Springer, T.A. Zawodzinski, S. Gottesfeld, “Polymer Electrolyte Fuel Cell Model,” J. Electrochemical Society, 138 (8) (1991) 2334-2342 [28] J.L. Cohen, D.A. Westly, A. Pechenik, “Fabrication and preliminary testing of a planar membraneless microchannel fuel cell,” J. Power Sources, 139 (1-2) (2005) 96-105 [29] A. Bazylak, D. Sinton, N. Djilali, “Improved fuel utilization in microfluidic fuel cells: A computational study,” J. Power Sources, 143 (1-2) (2005) 57-66 [30] F.L. Chen, M.H. Chang, M.K. Lin, “Analysis of membraneless formic acid microfuel cell using a planar microchannel,” J. Electrochimica Acta, 52 (7) (2007) 2506-2514 | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/25243 | - |
| dc.description.abstract | 本研究係利用CFD-RC商業套裝軟體建構三維數值模型，對一種新式微型甲醇燃料電池進行數值模擬。其中，所考慮的理論包含流場、質量傳輸、以及電化學反應，並以有限體積法(Finite volume method)求解各統御方程式，探討在不同操作參數下，燃料電池系統內部之流場分佈、濃度場分佈以及電流密度之變化，進一步了解各參數對整體燃料電池效能之影響。研究結果顯示，電池性能受限於陰極氧氣傳輸能力，採用高流量、高氧氣濃度或是孔隙度、厚度較大的陰極觸媒可以有效提升電池之性能。此外，流道之幾何關係亦是本研究討論的重點，設計流道的長度及高寬比(Aspect ratio)，必須配合流量對其內電阻之影響，選用最佳之幾何外型。本研究之三維數值模型可作為未來最佳化之操作設計。 | zh_TW |
| dc.description.abstract | In this study, a design for a novel micro direct methanol fuel cell (μ-DMFC) has been investigated theoretically. The fuel and oxidant are methanol and oxygen, respectively, which both dissolved in dilute sulfuric acid solutions. This concept of structure is distinct the conventional bipolar plants where the anode and cathode streams are made by two separate substrates. The model is applied to simulate the species transport within the micro DMFC system and the cell performance is analyzed significantly by examining the considerable parameters such as the volumetric flow rate, concentration of reactants, catalyst layers, and channel geometry. The commercial CFD package, CFD-RC, is employed to perform the numerical simulation. These results reveal that the cell performance is mainly restricted by the cathode transport. The improved approach also can be presented on the influence of cell performance in detail. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-08T06:06:21Z (GMT). No. of bitstreams: 1 ntu-96-R91543056-1.pdf: 4024517 bytes, checksum: b55a56ef85ae349bb658b796c9f1499a (MD5) Previous issue date: 2007 | en |
| dc.description.tableofcontents | ACKNOWLEDGEMENTS-----------------------------------------------------------------i
CHINESE ABSTRACTS--------------------------------------------------------------------ii ENGLISH ABSTRACTS-------------------------------------------------------------------iii LIST OF FIGURES-------------------------------------------------------------------------vi LIST OF TABLES---------------------------------------------------------------------------ix 1. INTRODUCTION---------------------------------------------------------------------------1 1.1 A Brief History of Fuel Cells---------------------------------------------------------1 1.2 The Basic Principle of Fuel Cells----------------------------------------------------2 1.3 Literature Review----------------------------------------------------------------------3 1.4 Motive of the Study--------------------------------------------------------------------9 2. THEORY-------------------------------------------------------------------------------------11 2.1 Schemes--------------------------------------------------------------------------------11 2.2 Assumptions--------------------------------------------------------------------------12 2.3 Governing Equations-----------------------------------------------------------------13 2.3.1 The governing equations in anode/cathode flow channels--------------13 2.3.2 The governing equations in anode/cathode catalyst layers--------------14 2.3.3 The governing equations in the proton exchange membrane-----------18 2.4 Initial and Boundary Conditions---------------------------------------------------18 3. RESULTS AND DISCUSSION----------------------------------------------------------21 3.1 Computational Domain--------------------------------------------------------------21 3.2 Simulation Compared with the Experiment--------------------------------------21 3.3 Effects of Volumetric Flow Rate---------------------------------------------------22 3.4 Effects of Concentration of Reactants---------------------------------------------24 3.5 Effects of Catalyst Layers-----------------------------------------------------------25 3.6 Effects of Channel Geometry-------------------------------------------------------28 4. CONCLUSIONS----------------------------------------------------------------------------48 REFERENCES-----------------------------------------------------------------------------50 | |
| dc.language.iso | en | |
| dc.subject | 微型甲醇燃料電池 | zh_TW |
| dc.subject | 甲醇 | zh_TW |
| dc.subject | 數值模擬 | zh_TW |
| dc.subject | 電池性能 | zh_TW |
| dc.subject | 陰極氧氣傳輸能力 | zh_TW |
| dc.subject | Oxidant consumption rate | en |
| dc.subject | Limiting current density | en |
| dc.subject | Micro DMFC | en |
| dc.subject | Methanol | en |
| dc.subject | Numerical simulation | en |
| dc.subject | Cell performance | en |
| dc.title | 新式微型直接甲醇燃料電池性能設計分析 | zh_TW |
| dc.title | Performance Analysis of a New Design of Micro Direct Methanol Fuel Cell (μ-DMFC) | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 95-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 張敏興(Min-Hsing Chang),羅安成(An-Cheng Ruo) | |
| dc.subject.keyword | 微型甲醇燃料電池,甲醇,數值模擬,電池性能,陰極氧氣傳輸能力, | zh_TW |
| dc.subject.keyword | Micro DMFC,Methanol,Numerical simulation,Cell performance,Oxidant consumption rate,Limiting current density, | en |
| dc.relation.page | 53 | |
| dc.rights.note | 未授權 | |
| dc.date.accepted | 2007-07-23 | |
| dc.contributor.author-college | 工學院 | zh_TW |
| dc.contributor.author-dept | 應用力學研究所 | zh_TW |
| 顯示於系所單位： | 應用力學研究所 | |
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