摘要：本文选用Gd(NO3)3-Ca(NO3)2-Na2C2O4-氨水-水-乙二醇为电解液，采用阳极氧化法制备钙、钆共掺杂氧化铈薄膜。研究阳极氧化温度和阳极氧化时间分别对钙、钆共掺杂氧化铈薄膜厚度的影响；Gd浓度与温度对钙、钆共掺杂氧化铈薄膜电导率的影响；采用XRD、SEM分别对钙、钆共掺杂氧化铈薄膜进行表征。结果表明：选用26℃的阳极氧化温度和8小时的阳极氧化时间制得的钙、钆共掺杂氧化铈薄膜厚度为22。2μm。600℃时，电解液中Gd浓度为1。92mmol/L，制得的钙、钆共掺杂氧化铈薄膜的电导率为2。30×10-2S/cm。XRD实验表明：钙、钆共掺杂氧化铈薄膜具有立方莹石结构，在400℃热处理后，钙、钆共掺杂氧化铈薄膜的晶型结构更加完整。SEM实验表明：钙、钆共掺杂氧化铈具有多孔结构。72744

创新点：采用阳极氧化法制备钙、钆共掺杂氧化铈薄膜在报道中均未出现。

毕业论文关键词： 固体电解质；氧化铈；钆；钙

Properties of Gd and Ca co-doped cerium oxide membrane

Abstract: In this paper, we used Gd (NO3)3 -Ca (NO3)2-Na2C2O4-ammonia water ethylene glycol as electrolyte and the anodized cerium membrane were prepared by anodic oxidation method。 The effects of anodic oxidation temperature and anodic oxidation time on the thickness of cerium oxide were studied。 The effects of Gd concentration on the conductivity of Gd and Ca co-doped cerium oxide membrane was studied。 XRD and SEM were used to characterize and analyze the cerium oxide membrane。 The results showed that: when temperature of anode oxidation was 26℃ and anodic oxidation time was 8 hours, the thickness of the prepared cerium oxide film was 22。2μm。 At 600℃, when Gd concentration were 1。92mmol / L, the electrical conductivity of Gd and Ca co-doped cerium oxide membrane was 2。30×10-2 S / cm。 XRD results showed that Gd and Ca co-doped cerium oxide membrane have cubic fluorite structure, and it was completed after it was calcined at 400℃。 SEM results show that Gd and Ca co-doped cerium oxide membrane have a porous structure。

Innovation point: the preparation of calcium and gadolinium co-doped cerium oxide films by anodic oxidation isn’t reported。

Key Words: Solid electrolyte; CeO2; Gd; Ga

目录

1前言 1

1。1 固体氧化物燃料电池 1

1。2 固体电解质 2

1。2。1 LaGaO3基电解质材料 3

1。2。2 Bi2O3基电解质材料 4

1。2。3 ZrO2基电解质材料 4

1。2。4 CeO2基电解质材料 5

1。3 电解质薄膜的制备方法 6

1。3。1化学气相沉积法 6

1。3。2电化学气相沉积法 6

1。3。3溶胶－凝胶法 6

1。3。4喷雾热解法 7

1。3。5阳极氧化法 7

1。4 研究内容 7

2 实验部分 8

2。1 实验仪器及原料 8

2。2 钙、钆共掺杂氧化铈薄膜的制备 9

2。2。1 实验装置 9

2。2。2 配置Gd溶液和Ca溶液 9

2。2。3 铈片的阳极氧化 9

2。3阳极氧化温度对钙、钆共掺杂氧化铈薄膜厚度的影响