SDC-Na2CO3复合电解质的制备和结构-性能研究任务书
2020-06-08 21:14:30
1. 毕业设计（论文）的内容和要求
针对传统sofcs工作温度较高(gt; 800 oc)而带来的材料成本，热化学稳定性等方面的问题，寻找在中低温下具有较高的离子电导率的电解质材料从而使得sofcs中低温化成为近年来研究工作的热点和重点。sdc-na2co3复合电解质是近十年间发展起来的一种新型电解质材料，因其优异的单电池输出性能，吸引了国内外研究者的关注。为进一步提高sdc-na2co3复合电解质的电性能，基于制备工艺的优化和界面电导机理的研究也已经广泛展开并取得了系列的进展。
本论文拟采用稀土碳酸钠复盐共沉淀方法，在不同预烧温度下合成得到sdc- na2co3超细粉体，并利用研磨降低预烧后粉体二次颗粒数量和选取合适的烧结制度，从而得到致密度gt;90%的sdc-na2co3复合电解质烧结体。通过研究其离子电导率和界面作用强度之间的关系，探讨预烧温度对于复合电解质电导性能的影响规律。
为了顺利完成毕业论文并力求得到锻炼，对该生提出的具体要求如下：
2. 参考文献
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[1] 李永峰,董新法,林维明.固体氧化物燃料电池的现状和未来.电源技术, 2002, 26(6): 462~465. [2] 魏丽,陈诵英,王琴.中温固体氧化物燃料电池电解质材料的研究进展. 稀有金属, 2003, 27(2):286~292. [3] 刘旭俐,马俊峰,刘文化等.固体氧化物燃料电池材料的研究进展.硅酸盐学报,2001,2:24. [4] 马文广. 中温固体氧化物燃料电池新型阴极材料的制备及性能研究.吉林大学硕士学位论文.2008,5. [5] J.M. RALPH, A..C.SCHCELER, M.KRUNMPELT. Materials for lower temperature solid oxide fuel cells. JOURNAL OF MATERIALS SCIENCE:2001,36,1161～1172. [6] 尹艳红,李少玉,杨书廷等.固体氧化物燃料电池致密电解质薄膜制备技术.河南师范大学学报,2005,4:64～67. [7] Xiaoliang Zhou, Kening Sun, Peng Wang. Preparation and electrical behavior study of the ceramic interconnect La0.7Ca0.3CrO3-δ d with CeO2-δ based electrolyte Ce0.8Sm0.2O1.9. Materials Research Bulletin:2009, 44, 231～236. [8] Manuela Bevilacqua, Tiziano Montini, Claudio Tavagnacco. Preparation, haracterization, and Electrochemical Properties of Pure and Composite LaNi0.6Fe0.4O3-δ Based Cathodes for IT-SOFC. Chem. Mater: 2007, 19, 5926～5936. [9] T. S. Zhang, J. Ma, L. B. kong, et al. Aging behavior and ionic conductivity of ceria-based ceramics: a comparative study. Solid State Ionics, 2004, 170: 209~217. [10] Zhu B. Functional ceria-salt-composite materials for advanced ITSOFC applications. J Power Sources, 2003, 114(1): 1. [11] Zhu B, Mellander B E. Proton conduction in salt-ceramic composite systems. Solid State Ionics, 1995, 77: 244. [12] Raza R, Wang X D, Ma Y, et al. Improved ceria#8211;carbonate composite electrolytes. Int J Hydrogen Energ, 2010, 35(7): 2684. [13] Wang X, Ma Y, Raza R, et al. Novel core#8211;shell SDC/amorphous Na 2 CO 3 nanocomposite electrolyte for low-temperature SOFCs. Electrochemistry Communications, 2008, 10(10): 1617-1620. [14] Ma Y, Wang X, Raza R, et al. Thermal stability study of SDC/Na 2 CO 3 nanocomposite electrolyte for low-temperature SOFCs. International journal of hydrogen energy, 2010, 35(7): 2580-2585. [15] Liu Q, Zhu B. Theoretical description of superionic conductivities in samaria doped ceria based nanocomposites. Applied Physics Letters, 2010, 97(18): 183115. [16] Yin S, Zeng Y, Li C, et al. Investigation of Sm0. 2Ce0. 8O1. 9/Na2CO3 Nanocomposite Electrolytes: Preparation, Interfacial Microstructures, and Ionic Conductivities. ACS applied materials amp; interfaces, 2013, 5(24): 12876-12886. [17] Li C, Zeng Y, Wang Z, et al. Preparation of SDC#8211;NC nanocomposite electrolytes with elevated densities: influence of prefiring and sintering treatments on their microstructures and electrical conductivities. RSC Advances, 2016, 6(102): 99615-99624. [18] Zhu B. Solid oxide fuel cell (SOFC) technical challenges and solutions from nano-aspects. International Journal of Energy Research, 2009, 33(13): 1126-1137. |
3. 毕业设计（论文）进程安排
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起讫日期 |
设计（论文）各阶段工作内容 |
备 注 |
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2016-12-17～2017-01-31 |
查阅文献，制定实验方案，完成开题报告 |
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2017-02-01～2017-03-30 |
稀土碳酸钠复盐共沉淀法制备SDC-Na2CO3复合粉体及其物相、微结构表征 |
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2017-03-31～2017-04-20 |
研磨-烧结制备致密SDC-Na2CO3shy;复合电解质及其物相、微结构表征 |
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2017-04-21～2017-05-05 |
SDC-Na2CO3shy;复合电解质电性能的表征 |
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2017-05-06～2017-05-16 |
单电池制备和性能测试 |
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2017-05-17～2017-06-07 |
撰写毕业论文 |
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2017-06-08～2017-06-13 |
毕业论文修改及完成毕业答辩 |
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