| Ca~(2+)和Cu~(2+)掺杂对铬酸锶镧烧结及电性能的影响 |
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| 引用本文： | 朱小芳,顾海涛,陈涵,郭露村.Ca~(2+)和Cu~(2+)掺杂对铬酸锶镧烧结及电性能的影响[J].压电与声光,2010,32(1). |
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| 作者姓名： | 朱小芳 顾海涛 陈涵 郭露村 |
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| 作者单位： | 南京工业大学,江苏省无机及其复合材料重点实验室,江苏,南京,210009 |
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| 摘 要： | La_(0.85)Sr_(0.15)CrO_3是固体氧化物燃料电池普遍使用的连接材料, 但其难以烧结致密.该文考察了Ca~(2+)和Cu~(2+)分别在La位和Cr位取代对La_(0.85)Sr_(0.15-x)Ca_xCr_(1-y)Cu_yO_3(x＝0～1、y＝0.2～0.8)连接材料烧结性能、电性能和热膨胀性能的影响.实验表明,当x＝0.05、y＝0时,材料La_(0.85)Sr_(0.1)Ca_(0.05)CrO_3的电导率显著提高, 800 ℃时达到20.1 S/cm.研究La位和Cr位共掺杂发现, x＝0.05、y＝0.05时的试样烧成温度降低了100 ℃,体积密度提高31.6%,同时材料的热膨胀系数也与8YSZ电解质材料匹配.
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| 关 键 词： | 固体氧化物燃料电池 连接材料 烧结性能 热膨胀系数 电导率 |
Effects of Ca~(2+) and Cu~(2+) Doping on Sintering and Electrical Properties of La_(0.85)Sr_(0.15)CrO_3 |
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| ZHU Xiao-fang,GU Hai-tao,CHEN Han,GUO Lu-cun.Effects of Ca~(2+) and Cu~(2+) Doping on Sintering and Electrical Properties of La_(0.85)Sr_(0.15)CrO_3[J].Piezoelectrics & Acoustooptics,2010,32(1). |
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| Authors: | ZHU Xiao-fang GU Hai-tao CHEN Han GUO Lu-cun |
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| Affiliation: | ZHU Xiao-fang,GU Hai-tao,CHEN Han,GUO Lu-cun (Nanjing University of Technology,Jiangsu Provincial Key Lab.of Inorganic , Composite Materials,Nanjing 210009,China) |
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| Abstract: | La_(0.85) Sr_(0.15) CrO_3 is commonly used as the ceramic interconnect material for solid oxide fuel cell(SOFC) applications.However,it is difficult to sinter this type of material to high density.The effects of Ca~(2+) and Cu~(2+) doping substitution on the sintering characteristics,thermal expansion and electrical conductivity properties of La_(0.85) Sr_(0.15-x)Ca_x Cr_(1-y) Cu_yO_3 were investigated.It was found that the electrical conductivity of La_(0.85) Sr_(0.15) CrO_3 was effectively improved at x=0... |
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| Keywords: | SOFC interconnect sintering ability TEC electrical conductivity |
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