Porous Nickel Based Half-Cell Solid Oxide Fuel Cell and Thin-Film Yttria-Stabilized Zirconia Electrolyte

IF 0.5 Q4 CHEMISTRY, MULTIDISCIPLINARY
A. Umirzakov, A. Mereke, Altynay Shaikenova, B. Rakhmetov, M. Yeleuov, R. Beisenov, R. Ebrahim, B. A. Mansurov
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引用次数: 1

Abstract

In this work, a porous nickel anode for thin-film solid oxide fuel cell prepared by the simple powder hot-pressing method is investigated. Powders of Ni and pore-forming agent (PFA) were thoroughly mixed in different ratios, pressed in a mold and further sintered. The polishing technique with Yttria-Stabilized Zirconia (YSZ) powder has been developed to decrease the surface roughness of Ni-based anode in order to deposit a crack-free electrolyte layer. The 3 μm YSZ thin-film electrolyte was deposited by the pulsed laser deposition technique on the surface of the anode. Morphological and elemental analyses of the samples were characterized by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) analyses. X-ray diffraction was used for phase analysis and structural characterization. The specific surface areas of the resulting anodes were calculated from their isotherms of N2 adsorption and desorption using the Sorbtometer and calculated by Brunauer Emmett-Teller (BET) method. As a result, the highest mechanical strength and specific surface area (15.42 m2g-1) possessed a sample with the content of PFA equal to 40%, while its ionic conductivity at 800 °C reached 6. 4∙10-2 S/cm.
多孔镍基半电池固体氧化物燃料电池和薄膜氧化钇稳定氧化锆电解质
本文研究了采用简单粉末热压法制备薄膜固体氧化物燃料电池用多孔镍阳极。将Ni粉末与成孔剂(PFA)按不同比例充分混合,在模具中压制并进一步烧结。采用钇稳定氧化锆(YSZ)粉末抛光技术,降低镍基阳极的表面粗糙度,从而沉积无裂纹的电解液层。采用脉冲激光沉积技术在阳极表面沉积了3 μm YSZ薄膜电解质。采用扫描电子显微镜(SEM)和能谱仪(EDS)对样品进行了形态和元素分析。采用x射线衍射进行物相分析和结构表征。所得阳极的比表面积由吸附和解吸等温线计算得到,并采用布鲁诺尔埃米特泰勒法(BET)计算。结果表明,当PFA含量为40%时,样品的机械强度和比表面积最高(15.42 m2g-1),在800℃时离子电导率达到6。4∙S / 10厘米。
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来源期刊
Eurasian Chemico-Technological Journal
Eurasian Chemico-Technological Journal CHEMISTRY, MULTIDISCIPLINARY-
CiteScore
1.10
自引率
20.00%
发文量
6
审稿时长
20 weeks
期刊介绍: The journal is designed for publication of experimental and theoretical investigation results in the field of chemistry and chemical technology. Among priority fields that emphasized by chemical science are as follows: advanced materials and chemical technologies, current issues of organic synthesis and chemistry of natural compounds, physical chemistry, chemical physics, electro-photo-radiative-plasma chemistry, colloids, nanotechnologies, catalysis and surface-active materials, polymers, biochemistry.
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