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首页> 外文会议>International Symposium on Solid Oxide Fuel Cells >POWER GENERATING PROPERTY OF SOFC USING La(Sr)Ga(Mg,Fe)O_3 ELECTROLYTE COATED WITH LaGaO_3 FILM
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POWER GENERATING PROPERTY OF SOFC USING La(Sr)Ga(Mg,Fe)O_3 ELECTROLYTE COATED WITH LaGaO_3 FILM

机译：SOFC的发电性能使用La（SR）Ga（Mg，Fe）O_3电解质涂有Lagao_3膜

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Oxide ion conductivity in La(Sr)Ga(Fe,Mg)O_3 was investigated in this study and it was found that the oxide ion conductivity much improved by doping Fe into Ga site. Although the electrical conductivity monotonically increased with increasing amount of Fe, partial electronic conduction became significant. Considering the transport number of oxide ions and conductivity, the optimum composition for oxide ion conductivity in this system is La_(0.7)Sr_(0.3)Ga_(0.7)Fe_(0.2)Mg_(0.1)O_(3-delta) (LSGFM73721). Although transport number of oxide ions is almost 0.8, extremely high power density was achieved by using LSGFM73721 as electrolyte of a SOFC. The maximum power densities of 870 and 167 mW/cm~2 were obtained at 1073 and 873 K, respectively, in spite of 0.5 mm thickness when 90Nil0Fe was used for the anode. A coating of La_(0.9)Sr_(0.1)Ga_(0.8)Mg_(0.2)O_3 film on anode side of LSGFM plate was investigated by pulsed laser ablation method. Since the deposited film was not dense, open circuit potential was almost unchanged in spite of LSGM film deposition, however, power density improved much by deposition of LSGM film and the maximum power densities of 197 and 100 mW/cm~2 were achieved at 873 and 773 K respectively. This study reveals that LSGMF is a suitable electrolyte for intermediate temperature SOFCs.
机译：在该研究中研究了La（SR）Ga（Fe，Mg）O_3中的氧化物离子电导率，发现通过掺杂Fe进入Ga位点，氧化离子电导率很大。尽管通过越来越多的Fe的电导率单调增加，但部分电子传导变得显着。考虑到氧化物离子和电导率的传输次数，该系统中氧化物离子电导率的最佳组合物是LA_（0.7）SR_（0.3）GA_（0.7）FE_（0.2）MG_（0.1）O_（3-DELTA）（LSGFM73721） 。尽管氧化物离子的传输数量几乎是0.8，但通过使用LSGFM73721作为SOFC的电解质来实现极高的功率密度。在1073和873k中分别在1073和873K中获得870和167mW / cm〜2的最大功率密度，尽管90毫秒用于阳极时，但厚度为0.5mm。通过脉冲激光烧蚀方法研究了LSGFM板的阳极侧的LA_（0.9）SR_（0.1）GA_（0.8）Mg_（0.2）O_3膜的涂层。由于沉积的膜不是致密的，尽管LSGM膜沉积，开路电位几乎不变，但是，通过沉积LSGM膜的功率密度改善，并且在873时达到了197和100mW / cm〜2的最大功率密度和773 k分别。该研究表明，LSGMF是用于中间温度SOFC的合适电解质。

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