本研究是以四層結構Ni-YSZ/8YSZ/SDC/LSCF組成之固態氧化物燃料電池（SOFC），在一個小型、可攜帶式加熱器中進行性能輸出。經由粉體分散實驗以及鍍膜漿料的研究，製備出分散均勻之Ni和8YSZ陽極，也可控制電解質的厚度變化。另外，在強度，孔隙率，以及Ni/ YSZ陽極的收縮率之間的關係進行了探討，揭示陽極的孔隙率的重要性。通過AC阻抗儀測量，針對SOFC全電池的電阻進行了全面性的研究。最後，在提供H2做為燃料的情況下，單電池功率輸出可達172 mW cm-2；另一方面，通過使用柳杉渣（CW）的生質燃料，電功率輸出約為62 mW cm-2。本實驗藉由結合固態燃料電池與具有高氧化鋁基澆注料和陶瓷耐火綿之微型加熱器，示範出可攜式型燃料電池的在未來的可行性以及潛力。

Solid Oxide Fuel Cell (SOFC) consisted of four layer structure of Ni-YSZ/ 8YSZ/ SDC/ LSCF was fabricated and sufficiently heated by a portable heater sufficient to an operation temperature of <800 oC. The detail investigation of powder dispersion in slurry, the thickness variation of electrolyte, assembly of half and single cells was conducted. By using AC impedance measuring, the resistances of the SOFC were also investigated. The relationship between strength, porosity, and shrinkage of the Ni/YSZ anode was also discussed to reveal the importance of anode porosity. The power output of single SOFC is 172 mW cm-2 by providing H2 and 62 mW cm-2 by using Cryptomeria waste (CW) bio-fuels. On the other hand, portable heater with high alumina-based castables and ceramic blanket were assembled that can be a prototype of the portable SOFC in future.

摘要 Ⅰ
Abstract Ⅱ
List of Figures Ⅶ
List of Tables XI
Chapter 1 Introduction 1
Chapter 2 literature review 3
2.1 Advantages of Solid Oxide Fuel Cell (SOFC) 3
2.1.1 Anode Materials for SOFC 4
2.1.2 Properties of Ni-Based Anodes 5
2.1.3 Triple-phase Boundary in Anode 6
2.2 Cell Stacks and Operation Behavior 6
2.2.1 Tubular or Planar design of SOFC 7
2.2.2 Gas and Fuel Passageways 8
2.3 Heaters for SOFC 9
2.3.1 Resistive Heaters 10
2.3.2 Combustion Heaters 11
Chapter 3 Experimental Procedure 22
3.1 Materials 22
3.2 Fabrication of Powder Mixtures 22
3.2.1 Colloidal Process 23
3.3 Anode Preparation 24
3.4 Electrolyte Preparation 24
3.4.1 Spin-Coating Method 24
3.4.2 Dip-Coating Method 25
3.5 Preparation of Barrier Layer 25
3.6 Cathode Preparation 26
3.7 Characterization 26
3.7.1 Sedimentation Test 26
3.7.2 Particle Size Measurement 27
3.7.3 SEM Analysis 28
3.7.4 Density Measurement 28
3.7.5 EIS Analysis (AC-impedance) 29
3.7.6 Thermal Analysis 29
3.7.7 Measurement of Poisson’s Ratio 30
3.7.8 Measurement of Strength 31
3.7.9 Hot-wire method 32
3.7.10 SOFC Assembly and Test 33
3.8 Cell Test 35
3.9 Castable Powder Preparation 35
3.10 Assembly of Heater 36
Chapter 4 Results 40
4.1 Properties of Synthesized Powders 40
4.1.1 Particle Size and Dispersion Properties 40
4.1.2 Porosity and Shrinkage Behavior 41
4.1.3 Thermal Analysis of Pore Former 43
4.1.4 Compression Behavior of Anode Powders 44
4.1.5 Strength of Anode Disk 44
4.2 Fabrication and Properties of Half Cell 56
4.2.1 Properties of 8YSZ Coating Slurry 56
4.2.2 Electrolyte Film by Spin-Coating and Dip-coating Methods 57
4.2.3 Sintering Behavior 59
4.3 Cell Test 63
4.3.1 EIS spectrum Analysis of Full Cells 63
4.3.2 I-V test 64
4.3.3 Bio-fuel Testing 66
4.4 Assembly of Performance of Portable Cell 71
4.4.1 Thermal Properties of Castables 71
4.4.2 Heating Properties 73
4.4.3 Self-sustainable SOFC 74
Chapter 5 Discussion 82
5.1 Conductivity in Ni-Based Anode 82
5.2 Shrinkage Behavior 83
5.3 Properties of Heater 84
Chapter 6 Conclusions 87
Reference 89

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