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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 韋文誠(Wen-Cheng J. Wei) | |
dc.contributor.author | Yu-Chien Lin | en |
dc.contributor.author | 林雨芊 | zh_TW |
dc.date.accessioned | 2021-05-19T17:45:55Z | - |
dc.date.available | 2023-08-01 | |
dc.date.available | 2021-05-19T17:45:55Z | - |
dc.date.copyright | 2018-08-01 | |
dc.date.issued | 2018 | |
dc.date.submitted | 2018-07-30 | |
dc.identifier.citation | REFERENCE
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/7538 | - |
dc.description.abstract | 燃料電池在使用碳氫燃料時,陽極的碳沉積和催化能力是兩個非常重要的研究項目。在最近的研究報告指出,鎳基陽極(NiO/YSZ)會與碳氫燃料反應,產生嚴重的碳沉積。故在本實驗中使用氧化銅來取代氧化鎳,以改善此現象。以固相法合成三種含銅、鎳及氧化鋯之陽極粉末。實驗中測試陽極催化前後滲透率,以證明樣品的積碳程度。半銅半鎳鋯(C50N50Z)陽極片在甲烷中具有良好的催化性質,且積碳速率較慢。在650 oC中溫燃料電池操作溫度下,C50N50Z的導電性為1503 Scm-1,可以將銅的高導電及溫度感測與催化功能結合,進行下面四種銅、銅鎳、銅基合金及鎳線(Cu, Cu11Ni, Cu-38Zn, Cu9Ni6Sn, Ni)之室溫及高溫導電性測試。銅在650 oC下的導電性最優,足以作為電流收集的材料。由上述線材製作的五種熱電偶在 200 oC~650 oC進行長時間 (>100小時) 測試,檢視熱電位的靈敏度及飄移量的要求,Cu-Cu11Ni, Cu-Cu9Ni6Sn和Cu-Ni三種熱電偶可在中溫型固態燃料電池中做為溫度感測器。因此,在燃料電池陽極端,銅基材料可以同時具有催化、溫度感測以及當作電流收集層等三種功能。 | zh_TW |
dc.description.abstract | Carbon deposition and catalytic ability of anodes are two important issues when using hydro-carbon fuels for solid oxide fuel cells. Nickel based anode (NiO/YSZ) shows a serious carbon deposition reported in recent research. Therefore, CuO is added to replace the NiO. In this study, three anode powders (100%Ni with 8YSZ, 50%Cu-50%Ni with 8YSZ and 100%Cu with 8YSZ) are prepared by powder mixing in well-dispersed slurry. A new approach to verify the effects of carbon deposition by measuring the permeability of the anodes are used in this study. C50N50Z shows a good catalytic ability and low coking rate for CH4. The conductivity of C50N50Z is 1503 Scm-1 at 650 oC. Another two functions of copper can be combined with this anode. Four copper-based metal and nickel wires (Cu, Cu11Ni, Cu-38Zn, Cu9Ni6Sn, Ni) are tested for their electric conductivity at room to high temperature. Due to a high electric conductivity, Cu is good enough to apply as a material for current collector. Five different thermocouples made from above wires are also aging in air for more than 100 h at 200 oC~650 oC. Because of sensibility and less drift (<5%) of thermopotential at 200 oC to 650 oC, three thermocouples Cu-Cu11Ni, Cu-Cu9Ni6Sn and Cu-Ni are suitable for intermediate-temperature SOFC as temperature sensors. Thus, triple function of Cu-based materials can be applied on anode side of SOFCs. | en |
dc.description.provenance | Made available in DSpace on 2021-05-19T17:45:55Z (GMT). No. of bitstreams: 1 ntu-107-R05527053-1.pdf: 7842659 bytes, checksum: fdc1141cf2551ab8106aeaa97c8b01cf (MD5) Previous issue date: 2018 | en |
dc.description.tableofcontents | CONTENTS
口試委員會審定書 # 誌謝 i 摘要 iii ABSTRACT iv CONTENTS v LIST OF FIGURES viii LIST OF TABLES xiii Chapter 1 Introduction 1 Research Objectives 3 Chapter 2 Literature Review 4 2.1 SOFCs 4 2.1.1 Carbon Deposition at Anode 5 2.1.2 Sulfur Corrosion 6 2.1.3 Thermal Expansion Coefficient (CTE) of Copper 6 2.1.4 Fabrication Method of Copper-Based Anode 7 2.2 Permeability of Porous Ceramics 13 2.2.1 Darcy Flow and Non-Darcy Flow 13 2.2.2 Non-Darcy Flow in Porous Media 14 2.3 Thermocouple 17 2.3.1 Principal of Thermoelectric Thermometry[41] 17 2.3.2 Common Thermocouple Types 18 2.3.3 Fabrication and Sealing Method of Thermocouple 20 Chapter 3 Experimental Procedure 23 3.1 Materials 23 3.2 Anode Preparation and Cell Assembly 23 3.3 Preparation of Thermocouple 25 3.4 Property Characterization 25 3.4.1 Sedimentation Test 25 3.4.2 XRD Analysis 26 3.4.3 SEM Analysis 26 3.4.4 Density Measurement 27 3.4.5 Thermogravimetric Analysis (TGA) 27 3.4.6 Permeability Test 28 3.4.7 Gas Chromatography 29 3.4.8 Conductivity Measurement 29 3.4.9 Thermopotential measurement 30 3.4.10 Thermal Expansion Analysis (Dilatometer, DIL) 31 Chapter 4 Results and Discussions 37 4.1 Electric Properties of Cu-based Alloy 37 4.1.1 Conductivity of Cu-based Alloy 37 4.1.2 Seebeck coefficient of Thermocouples 39 4.1.3 Short-term Thermopotential of Thermocouples 41 4.1.4 Long-term Thermopotential of Thermocouples 42 4.2 Properties of Anode 58 4.2.1 Dispersion Properties 58 4.2.2 Porosity of Anode 59 4.2.3 TGA Analysis of Anode Materials 60 4.2.4 Catalytic Effects of Methane 61 4.2.5 Electrical Conductivity of Anode 65 4.3 Fabrication and Characterization of Half-Cell 87 4.3.1 N100Z Anode Supported Cells 87 4.3.2 C50N50Z Anode Supported Cell 95 4.3.3 Improvement of C50N50Z Anode Supported Cell 102 Chapter 5 Conclusions 106 Appendix 108 REFERENCE 118 | |
dc.language.iso | en | |
dc.title | 銅基材料在固態燃料電池陽極端導電性、溫度感測及催化性質之研究 | zh_TW |
dc.title | Study of Electric Conductivity, Temperature Sensing, and Catalytic Effect of Cu-Based Materials for Anode of Solid Oxide Fuel Cells | en |
dc.type | Thesis | |
dc.date.schoolyear | 106-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 吳玉娟(Yu-Chuan Wu),郭俞麟(Yu-Lin Kuo) | |
dc.subject.keyword | 銅基,陽極,催化,滲透率,碳沉積,熱電偶,固態燃料電池, | zh_TW |
dc.subject.keyword | Cu-based,anode,catalytic,permeability,carbon deposition,thermocouple,SOFCs, | en |
dc.relation.page | 125 | |
dc.identifier.doi | 10.6342/NTU201802084 | |
dc.rights.note | 同意授權(全球公開) | |
dc.date.accepted | 2018-07-31 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 材料科學與工程學研究所 | zh_TW |
dc.date.embargo-lift | 2023-08-01 | - |
顯示於系所單位: | 材料科學與工程學系 |
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