摘要：本文采用阳极氧化法制备镍、钐共掺杂氧化铈薄膜，研究了Ni2+浓度对其厚度和组成成分的影响，研究了Ni2+浓度与温度对其电导率的影响以及热处理温度对其IR谱图的影响，并利用SEM对其微观形貌进行表征。采用一步阳极氧化法和两种两步阳极氧化法分别制备镍、钙、钐共掺杂氧化铈薄膜，研究了不同阳极氧化方法对其厚度和电导率的影响。结果表明：在电解液中Ni2+浓度为3。5204mmol/L时，阳极氧化法制备的镍、钐共掺杂氧化铈薄膜厚度可达到24。1μm，600℃下其电导率为4。27×10-3S·cm-1。EDX结果表明：阳极氧化法制备的薄膜为镍、钐共掺杂氧化铈薄膜，且Ni2+含量随着电解液中Ni2+浓度的增加而增大，而Sm3+含量变化不大。IR结果表明：阳极氧化法制备的镍、钐共掺杂氧化铈薄膜的表面吸附着乙二醇和水，经300℃热处理2h后，其表面的乙二醇和水均脱附。SEM结果表明：镍、钐共掺杂氧化铈薄膜为多孔结构。一步阳极氧化法、两步阳极氧化法I、两步阳极氧化法II制备的镍、钙、钐共掺杂氧化铈薄膜的厚度分别为29。7μm、32。2μm和31。9μm，600℃下其电导率分别为8。6×10-3S·cm-1、1。09×10-2S·cm-1和9。02×10-3S·cm-1。本文创新之处：用阳极氧化法制备镍、钐共掺杂氧化铈薄膜和镍、钙、钐共掺杂氧化铈薄膜的研究尚未见报道。81026

毕业论文关键词：固体氧化物燃料电池；阳极氧化法；共掺杂氧化铈薄膜

Study on preparation technology of Ni，Ca，Sm Co-doped ceria films

Abstract：In this paper, Ni, Sm Co-doped ceria films were prepared by anodic oxidation method, we studyed the effect of Ni2+ concentration on this films’s thicknes and composition, the influence of Ni2+ concentration and temperature on this films’s conductivity, the influence of heat treatment temperature on this films’s IR spectra, and this films’s microstructure was characterized by SEM。 In addition, Ni, Ca, Sm Co-doped ceria films were prepared by one-step anodization methods and two types two-step anodization methods。 The effects of different anodization methods on this films’s thickness and conductivity were investigated。The results show that when the Ni2+ concentration was 3。5204 mmol/L in the electrolyte, the thickness of the Ni, Sm Co-doped ceria films was 24。1μm, and at 600℃ this films’s conductivity can reached 4。27×10-3S·cm-1。 The results of EDX show that the films what prepared by anodic oxidation are Ni, Sm Co-doped ceria films, and the content of Ni2+ increases with the increase of Ni2+ concentration in electrolyte, while the content of Sm3+ varies little。The results of IR show that the surface of Ni, Sm Co-doped ceria films prepared by anodic oxidation was supported with ethylene glycol and water, and after 300℃ of heat treatment 2 hours later, the surface of ethylene glycol and water are removed。 The results of SEM show that the surface of Ni, Sm Co-doped ceria films is porous structure。The Ni, Ca, Sm Co-doped ceria films were prepared by one-step anodization methods、two-step anodization methods I and two-step anodization methods II, this films’s thickness respectively as 29。7μm, 32。2μm and 31。9μm, this films’s ectrical conductivity at 600℃ respectively as 8。6×10-3S·cm-1, 1。09×10-2S·cm-1 and 9。02×10-3S·cm-1。The innovation of this paper: the preparation of Ni, Sm Co-doped ceria films and Ni, Ca, Sm Co-doped ceria films by anodic oxidation has not been reported。

Key Words: solid oxide fuel cell; anodic oxidation method; Co-doped ceria films 

目  录

1 绪论 1

1。1 SOFC概述 1