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| NH4PO3-SiO2复合电解质的溶胶凝胶法制备和导电性能 | |
| 引用本文： | 彭小波,陈西林,郑海波,程继贵,夏长荣.NH4PO3-SiO2复合电解质的溶胶凝胶法制备和导电性能[J].无机化学学报,2007,23(9):1567-1571. |
| 作者姓名： | 彭小波 陈西林 郑海波 程继贵 夏长荣 |
| 作者单位： | 1. 合肥工业大学材料科学与工程学院,合肥,230009;中国科学技术大学材料科学与工程系,合肥,230026 2. 中国科学技术大学材料科学与工程系,合肥,230026 3. 合肥工业大学材料科学与工程学院,合肥,230009 |
| 基金项目： | 教育部高等学校博士学科点专项科研基金;中-德合作项目 |
| 摘 要： | 用溶胶凝胶法制备了复合固体电解质xNH4PO3-SiO2(x=1，2，4)，并研究了该电解质在125～250 ℃范围内的导电性能。复合电解质的相结构分析表明，NH4PO3和SiO2在溶胶凝胶法制备过程中没有发生化学反应;复合电解质的电导率随着NH4PO3含量增大而提高，并与NH4PO |
| 关 键 词： | 复合电解质 NH4PO3-SiO2 质子导体 溶胶凝胶 中温燃料电池 |
| 文章编号： | 1001-4861（2007）09-1567-05 |
| 修稿时间： | 2007-04-30 |
Electrical Performance of NH4PO3-SiO2 Composite Electrolytes Prepared by a Sol-gel Method |
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| PENG Xiao-Bo,CHEN Xi-Lin,ZHENG Hai-Bo,CHENG Ji-Gui and XIA Chang-Rong.Electrical Performance of NH4PO3-SiO2 Composite Electrolytes Prepared by a Sol-gel Method[J].Chinese Journal of Inorganic Chemistry,2007,23(9):1567-1571. | |
| Authors: | PENG Xiao-Bo CHEN Xi-Lin ZHENG Hai-Bo CHENG Ji-Gui and XIA Chang-Rong |
| Institution: | 1.School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009;2.Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026 |
| Abstract: | Proton-conductive composite electrolytes consisting of xNH4PO3-SiO2(x=1,2,4) were synthesized by a sol-gel method. X-ray diffraction investigation showed that NH4PO3 was chemically stable in the process of sol-gel preparation. The conductivity of the resulted composites was measured with impedance spectroscopy. The conductivity was improved by increasing the molar ratio of NH4PO3. Meanwhile the activation energy for conductivity decreased with NH4PO3 content. This indicates that NH4PO3 is responsible for the high conductivity and SiO2 serves as a supporting matrix, although the conductivity was slightly affected by the size of SiO2 particles. The proton conductivity was dramatically enhanced by increasing the water content, indicating that the effect of water is significant. |
| Keywords: | composite electrolyte NH4PO3-SiO2 proton conductor sol-gel intermediate temperature fuel cell |
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