請用此 Handle URI 來引用此文件：
http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/44223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 | Ching-Hung Weng | en |
| dc.contributor.author | 翁敬閎 | zh_TW |
| dc.date.accessioned | 2021-06-15T02:45:45Z | - |
| dc.date.available | 2009-08-18 | |
| dc.date.copyright | 2009-08-18 | |
| dc.date.issued | 2009 | |
| dc.date.submitted | 2009-08-10 | |
| dc.identifier.citation | References
[1] Website, Solid Oxide Fuel Cell- Wikipedia, (http://en.wikipedia.org/wiki/Solid_oxide_fuel_cell) [2] S. C. Singhal and K. Kendall (edited), High Temperature Solid Oxide Fuel Cells: Fundamental, Design and Applications, Chap. 1 and 4, Elsevier Ltd. [3] R. George, A. C. Casanova and S. Veyo, Extended abstract of the 2002 Fuel Cell Seminar, Washington DC, 2002. [4] E. Ivers-Tiffee, p.81 in Proceedings, ACTSEA-Kenting, Heng-chun, Taiwan, Nov. 4-7, 2007. [5] Website (http://nikkeibp.co.jp/china/news/news/ pr_elec200707310122.html) [6] Please see Appendix 3 (p. 134) [7] R. S. Roth and J. Waring, J. Res. Natl. Bul. Standards, 66A [6] (1962) 461. [8] Website, Bismite-mindat.org, (http://www.mindat.org/show.php?id=682&ld=1&pho=) [9] N. M. Sammes, G. A. Tompsett, H. Nafe and F. Aldinger, Bismuth Based Oxide Electrolytes- Structure and Ionic Conductivity, J. Eur. Ceram. Soc., 19 (1999) 1801-1826. [10] Website, Bismuth(III) Oxide- Wikipedia, (http://en.wikipedia.org/wiki/Bismuth(III)_oxide) [11] H. A. Harwig and A. G. Gerards, The Polymorphism of Bismuth Sesquioxide, Thermochimica Acta, 28 (1979) 121-131. [12] T. Yamada, T. Suzuki, M. Nakagome, S. Arai and Y. Nakagome, Development of radiation shielding materials using high specific gravity rubber, Bul. Tokyo Met. Ind. Tech. Res. Institute, 5 (2002) 69-72. [13] Y. - M. Chiang, D. Birnie III and W. D. Kingery, Physical Ceramics, Chap. 3, John Wiley & Sons, Inc., 1997. [14] M. Barsoum, Fundamentals of Ceramics, Section 7.3, McGraw-Hill Education. [15] T. Takahashi, H. Iwahara and Y. Nagai, High Oxide Ion Conduction in Sintered Bismuth Oxide Containing Strontium Oxide, Calcium Oxide or Lanthanum Oxide, J. Appl. Electrochem., 2 (1972) 97-104. [16] P. J. Dodor, J. Tanaka and A. Watanabe, Electrical Characterization of Phase Transition in Yttrium Doped Bismuth Oxide, Bi1.55Y0.45O3, Solid State Ionics, 25 (1987) 177-181. [17] M. J. Verkerk and A. J. Burggraaf, High Oxygen Ion Conduction in Sintered Oxides of the Bismuth Oxide-Erbium Oxide System, J. Electrochem. Soc., 128 (1981) 75-82. [18] T. Takahashi, T. Esaka and H. Iwahara, Oxide Ion Conduction in the Sintered Oxide of MoO3-doped Bi2O3, J. Appl. Electrochem., 7 (1977) 31-35. [19] H. T. Cahen, T. G. M. van der Belt, J. H. W. De Wit and G. H. J. Broers, The Electrical Conductivity of | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/44223 | - |
| dc.description.abstract | 本研究利用膠粒分散及強迫析出之製程，製出鈮添加於氧化鉍、以及添加釔的鈮酸鉍材料，以達到良好的成分均勻以及相穩定的要求。首先研究三種起始粉之膠粒性質，找出最適合的製程條件；之後測試燒結樣品表面及縱切面之均勻度，得出的結果以統計學的方法進行分析。此外，以XRD來進行相鑑定，並與電子繞射的結果對照。導電度量測方面，燒結後之B15N-6Y樣品在500oC可達到10-2 S/cm水準。對於水溶液中膠粒分散機制會有深入討論。 | zh_TW |
| dc.description.abstract | In order to achieve compositional homogeneity and phase stability, colloidal processing and forced-precipitation method were utilized to prepare various Y2O3- and Nb2O5-doped Bi2O3 materials. Colloidal properties of three starting powders were investigated with respect to the homogeneity on the bulk sample surface and cross-sectional areas by a statistical approach. The crystalline phases were determined by XRD and electron diffraction. Besides, electric conductivity of the samples was measured. The results show acceptable conductivity of sintered B15N6Y, exceeds 10-2 S/cm, at 500oC. The dispersion mechanism of fine oxide powders will be discussed in this work. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-15T02:45:45Z (GMT). No. of bitstreams: 1 ntu-98-R95527065-1.pdf: 6255894 bytes, checksum: 6bac3582b7feaa2ed428d1ee5947958d (MD5) Previous issue date: 2009 | en |
| dc.description.tableofcontents | Content
摘要………………………………………………………………………I Abstract……………………………………………………………….II List of Figures …………………………………………………….VI List of Tables ……………………………………………………VIII Chapter 1 Introduction ……………………………………………1 Chapter 2 Literature Review ………………………………………6 2.1 Bismuth-Based Electrolyte Materials ………………………6 2.1.1 Introduction and Applications of Bismuth Oxide …….6 2.1.2 Electric Conductivity of Bi2O3 ………………………….6 2.1.3 Electric Conductivity of Doped Bi2O3 ………………….7 2.1.4 Y2O3-Stabilized Bi2O3 (YDB)……………………………….9 2.2 Nb-Doped Bismuth Oxide System ………………………………10 2.2.1 Phase Diagram of the System Bi2O3-Nb2O5 ………………10 2.2.2 Crystal Structure of Bi3NbO7 …………………………….11 2.2.3 Electric Conductivity of Nb2O5-Doped Bi2O3 ………….12 2.2.4 Y2O3-Doped Bismuth Niobates ………………………………12 2.3 Powder Processing of Ceramics ………………………………23 2.3.1 Colloidal Processing ……………………………………….24 2.3.2 Forced-Precipitation Process …………………………….26 Chapter 3 Experimental Procedure ……………………………….29 3.1 Materials …………………………………………………………29 3.1.1 Materials for Colloidal Processing …………………….29 3.1.2 Materials for Forced-Precipitation Method ……………29 3.2 Sample Preparation …………………………………………….29 3.2.1 Colloidal Processing for B21N ……………………………29 3.2.2 Forced-Precipitation Process …………………………….30 3.3 Characterization Methods …………………………………….31 3.3.1 Sedimentation Experiment ………………………………….31 3.3.2 Density Measurement …………………………………………31 3.3.3 X-ray Diffraction ……………………………………………32 3.3.4 Surface Properties of Powders …………………………..32 3.3.5 Microstructure Observations ………………………………34 3.3.6 Homogeneity Analysis ……………………………………….35 3.3.7 Electric Conductivity Tests ………………………………36 Chapter 4 Results ……………………………………………………40 4.1 Colloidal Properties of Bi2O3 and Nb2O5 …………………40 4.1.1 Sedimentation ……………………………………………....40 4.1.2 Zeta-Potential ……………………………………………….41 4.1.3 Solubility of Bi and Nb in Aqueous Solutions ……….41 4.1.4 Surface Interactions of Bi2O3 and Nb2O5 ………………42 4.1.5 Particle Size …………………………………………………43 4.2 Sintered Properties of Colloidal-Processed B21N ………52 4.2.1 Sintered Density …………………………………………….52 4.2.2 Microstructure and Homogeneity ………………………….52 4.2.3 Electric Conductivity of B21N ……………………………65 4.3 Y2O3-Doped Bismuth Niobates …………………………………69 4.3.1 Microstructure and Homogeneity of Y2O3-Doped Bismuth Niobates……..............................................69 4.3.2 Electrical Conductivity of Y2O3-doped Bismuth Niobates………………......................................71 4.4 Forced-Precipitation Process ……………………………….82 4.4.1 Density Measurement …………………………………………82 4.4.2 Microstructure and Homogeneity Analyses ………………82 Chapter 5 Discussion ……………………………………………….90 5.1 Criterion for Achieving Good Homogeneity ……………….90 5.1.1 Dispersion in Single Slurry System …………………….90 5.1.2 Dispersion in Binary System and Homogeneity …………92 5.2 Comparison between Colloidal Processing and Forced-precipitation Method......................................96 5.3 Effect of Y2O3 Content ……………………………………….97 Chapter 6 Conclusions ………………………………………………99 Chapter 7 Future Work …………………………………………….102 Appendix 1- Sealing Glass for Bi2O3 Electrolyte ………….103 Appendix 2 …………………………………………………........133 Appendix 3 ……………………………………………………………134 References…………………………………………………………….135 | |
| dc.language.iso | en | |
| dc.subject | 導電度 | zh_TW |
| dc.subject | 電解質 | zh_TW |
| dc.subject | 膠粒分散 | zh_TW |
| dc.subject | 強迫析出法 | zh_TW |
| dc.subject | 氧化鉍 | zh_TW |
| dc.subject | 鈮酸鉍 | zh_TW |
| dc.subject | Bismuth oxide | en |
| dc.subject | Niobate | en |
| dc.subject | Conductivity | en |
| dc.subject | Electrolyte | en |
| dc.subject | Dispersion | en |
| dc.subject | Forced-precipitation | en |
| dc.title | 氧化鉍基固態氧化物燃料電池電解質之製備與分析 | zh_TW |
| dc.title | Processing and Property Investigations of Bismuth-Based Electrolyte for Solid Oxide Fuel Cell | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 97-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 林永仁(Yung-Jen Lin),洪逸明(I-Ming Hung) | |
| dc.subject.keyword | 電解質,膠粒分散,強迫析出法,氧化鉍,鈮酸鉍,導電度, | zh_TW |
| dc.subject.keyword | Electrolyte, Dispersion, Forced-precipitation, Bismuth oxide, Niobate, Conductivity, | en |
| dc.relation.page | 140 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2009-08-10 | |
| 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 |
| 顯示於系所單位： | 材料科學與工程學系 | |
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