摘要：固体氧化物燃料电池（Solid Oxide Fuel Cell, 简称SOFC）在高温下运行（600-1000 oC），是一种将燃料和氧化剂中的化学能直接转化为电能的发电装置。它具有能量转化率高、环境友好的优点，但同时中高温下运行的苛刻条件也限制了它的发展。传统Ni基金属-陶瓷复合阳极支撑的固体氧化物燃料电池性能好，但容易发生积碳反应，本文采用Sr0.98Ti0.3Fe0.7O3和Ni掺杂的Sr0.9Ti0.3(Fe0.9Ni0.1)0.7O3两种钙钛矿氧化物材料分别作为阳极集电层和阳极功能层，研究了新型钙钛矿陶瓷阳极支撑的固体氧化物燃料电池的初步制备过程及陶瓷阳极的电化学性能。通过固相合成法制备了STF和STFN材料，研究了不同煅烧温度对STF、STFN、STF-GDC以及STFN-GDC烧结性能的影响；分别表征了上述材料的电导率、空气和氢气下的电化学交流阻抗谱响应。结果表明，STF和STFNi在烧结速率和收缩率方面相互匹配；STF和STFN在空气中和800 oC下的电导率分别达到了1.378S/cm和1.249S/cm；STF、STFN以及STF-STFN复合电极在800 oC空气中的极化电阻分别为0.064Ωcm2、0.13Ωcm2和0.081Ωcm2，在氢气中的极化电阻分别为0.21Ωcm2、0.19Ωcm2和0.20Ωcm2。

关键词  固体氧化物燃料电池 陶瓷阳极 电化学交流阻抗谱

毕业设计说明书外文摘要

Title    Preparation and characterization of novel ceramic anode supported solid oxide fuel cell                                              

Abstract：Solid Oxide Fuel Cell (SOFC) operates at high temperatures (600-1000 °C), a power plant that converts chemical energy from fuels and oxidants directly into electrical energy. It has the advantages of high energy conversion and environmental friendliness, but at the same time the harsh conditions of running at high temperatures also limit its development. The solid oxide fuel cell supported by the traditional Ni-based metal-ceramic composite anode has good performance, but it is easy to occur carbon deposition. In this paper, a new type of perovskite ceramic anode supported solid oxide fuel cell was prepared by using Sr0.98Ti0.3Fe0.7O3 And Ni-doped Sr0.9Ti0.3 (Fe0.9Ni0.1) 0.7O3 two kinds of perovskite oxide materials, respectively, as the anode collector layer and anode functional layer. The effects of different calcination temperatures on the sintering properties of STF, STFN, STF-GDC and STFN-GDC were investigated. The electrochemical properties of STF and STFN were investigated by solid-phase synthesis. The electrochemical properties of STF and STFN were investigated. AC impedance spectroscopy response. The results show that STF and STFN in the air at 800 oC under the conductivity reached 1.378 S/cm and 1.249 S/cm; the polarization resistances of STF, STFN and STF-STFN composite electrodes in air at 800 °C are 0.064 Ωcm2, 0.13 Ωcm2 and 0.081 Ωcm2, respectively, and the polarization resistances in hydrogen are 0.21 Ωcm2, 0.19 Ωcm2 and 0.20 Ωcm2.

Keywords  Solid oxide fuel cell  Ceramic anode  Electrochemical impedance spectroscopy

目   次

1 绪论 1

1.1 研究背景 1

1.2 SOFC简介 1

1.3 阳极材料的选择 2

1.4 研究内容 4

2 实验材料与方法 5

2.1 实验原料及实验设备 5

2.1.1 实验原料 5

2.1.2 实验设备 5

2.2 阳极的制备 6

2.2.1 原料计算 6

2.2.2 称量、球磨及干燥 6

2.2.3 煅烧 6

2.2.4 阳极支撑体的制备 6

2.2.5 阳极功能层和电解质层的制备 7

2.2.6 滴涂 7

2.2.7 对称电池的制备 8

2.2.8 电导率测试 10

3 实验结果与讨论 12

3.1 X射线衍射（XRD） 12

3.2烧结性能 13

3.3 电导率 16

3.4 电化学交流阻抗谱 18

3.4.1 空气中对称电池的电化学交流阻抗谱 18