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固体氧化物燃料电池(SOFC)是一种高效，环保的能量转换装置。随着能源和环境问题的日益严重，SOFC 的研究已经成为能源和材料领域的热点之一。 实验采用溶胶-凝胶法制备中温H2S固体氧化物燃料电池的电解质和阳极催化剂。电解质 Ce0.8Sm0.2O2(SDC)的 XRD结果表明经900℃煅烧后SDC 具有典型的萤石结构。400℃~800℃时，SDC 的电导率均随温度的升高而增大。 Y0.9Sr0.1Cr1-xFexO3(x=0.1, 0.3, 0.5)的测试结果表明经1000℃煅烧后，均形成典型的钙钛矿结构，且表面疏松多孔。同时具有良好的耐硫性和化学相容性。400℃~800℃时，电导率均随温度的升高而增大。综合分析选择 Y0.9Sr0.1Cr0.5Fe0.5O3作为阳极催化剂，组装成单电池YSCF-SDC|SDC|Ag。测试结果显示电池的性能随温度的增加不断提高。在 800℃，电池开路电压为0.91V,最大功率密度为12mW· cm-2最大电流密度 45 mA·cm-2关键词：H2S 固体氧化物燃料电池；中温；电解质；阳极6966
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Title Synthesis and performance of anode materials for intermediate
temperature H2S solid oxide fuel cells
Abstract
Solid oxide fuel cells (SOFCs) are efficient, green energy conversion devices. With the
increasing energy crisis and environmental pollution, SOFC has grabbed a lot of
interests in energy and materials science.
Electrolyte and anode catalysts of H2S solid oxide fuel cells were prepared by sol-gel
method. The XRD of Ce0.8Sm0.2O2 (SDC) showed that SDC has a typical of fluorite
structure after calcining at 900℃. At 400℃~800℃, the conductivities increased with
the temperature.
The results of Y0.9Sr0.1Cr1-xFexO3(x=0.1, 0.3, 0.5) indicated that fine powders with
perovskite structure were obtained after calcining at 1000℃. They also have good
resistance to sulfur and chemical compatibility. At 400℃~800℃, the conductivities
increased with the temperature at different atmospheres. Y0.9Sr0.1Cr0.5Fe0.5O3 was
chosen as the anode material. The electrochemical properties were measured for the
cell with configuration of YSCF-SDC|SDC|Ag at different temperatures. The results
revealed the cell performance increased with the temperature rising. At 800℃, the open
circuit voltage was 0.91V; the maximum power density and current density are
12mW·cm-2and 45 mA·cm-2, respectively.
Keywords: H2S Solid oxide fuel cells; Intermediate temperature; Electrolyte; Anode
目录
1 绪论 .. 1
1.1 燃料电池及应用 1
1.1.1 燃料电池的工作原理 . 1
1.1.2 燃料电池的特点 2
1.1.3 燃料电池分类其应用 . 3
1.2 H2S 固体氧化物燃料电池 . 4
1.2.1 H2S 固体氧化物燃料电池研究背景及意义 .. 5
1.2.3 H2S 固体氧化物燃料电池电解质研究进展 .. 7
1.2.4 H2S 固体氧化物燃料电池阳极催化剂 . 8
1.2.5 H2S 固体氧化物燃料电池阳极催化剂研究进展 . 10
1.3 电池材料的制备方法 11
1.3.1 固相烧结法 12
1.3.2 微波合成法 12
1.3.3 溶胶-凝胶(Sol-Gel)法 .. 12
1.3.4 甘氨酸-硝酸盐法 12
1.3.5 尿素燃烧法 13
1.4 本课题的主要研究内容 .. 13
2 SDC的制备及表征 14
2.1 实验部分 . 14
2.1.1 实验药品及仪器 14
2.1.2 SDC 的制备 14
2.1.3 SDC 的表征方法 . 15
2.2 结果与讨论 . 17