La0.6PrSr0.4NiO4-Ce0.8Pr0.2O2 composite cathode for solid oxide fuel cell
La0.6PrSr0.4NiO4-Ce0.8Pr0.2O2 composite cathode for solid oxide fuel cell
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固体氧化物燃料电池用La0.6PrSr0.4NiO4-Ce0.8Pr0.2O2复合阴极
DOI：
10.1016/j.matchemphys.2014.11.017
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发表时间：
2015
影响因子：
4.6
通讯作者：
Su Wenhui
中科院分区：
文献类型：
--
作者：
Liang Li;Huang Xiqiang;Lu Zhe;Zhang Yaohui;Wei Bo;Zhu Xingbao;Xiao Juncheng;Wu Yanyan;Liu Zhiguo;Su Wenhui
制备了（1-xwt%）La0.6PrSr0.4NiO4-（xwt%）Ce0.8Pr0.2O2（x= 0，10，20，30，40，50）（简称LPSN-xCPO）复合阴极材料，并将其用作中温固体氧化物燃料电池（IT-SOFC）的复合阴极。XRD结果表明，在1200 °C烧结4 h后，LPSN与CPO之间没有发生化学反应。LPSN-xCPO的电导率随x的增加而降低。LPSN-40 CPO在开路条件下的阴极阻抗谱表现出最好的性能。在700 °C下，LPSN-40 CPO和LPSN的交换电流密度分别为50.1和15.8 mA cm−2，LPSN-40 CPO的极化电阻RP为0.22 Ω cm − 2，约为LPSN的八分之一。以LPSN-40 CPO为阴极的电池的OCV为约0.78 V，最大功率密度为约88 mW cm-2。LPSN-40 CPO有望成为IT-SOFC的阴极材料。
(1−xwt%) La0.6PrSr0.4NiO4– (xwt%) Ce0.8Pr0.2O2(x= 0, 10, 20, 30, 40, 50), abbreviated as LPSN-xCPO, were prepared and used as composite cathode for intermediate temperature solid oxide fuel cell (IT-SOFC). XRD result suggested that no chemical reaction occurred between LPSN and CPO after sintering at 1200 °C for 4 h. Electrical conductivity of LPSN-xCPO decreased withx. LPSN-40CPO exhibited the best performance on cathode impedance spectra under open-circuit condition. At 700 °C, Exchange current density of LPSN-40CPO and LPSN was 50.1 and 15.8 mA cm−2, respectively, and the polarization resistanceRPof LPSN-40CPO was 0.22 Ω cm2, which is about one-eighth of that of LPSN. The OCV of the cell with LPSN-40CPO as cathode was about 0.78 V, and the maximum of power density was about 88 mW cm−2. LPSN-40CPO can be a promise candidate for cathode in IT-SOFC.