Compatibility of La26O27(BO3)8 electrolyte with standard cathode materials for use in proton conducting solid oxide fuel cells
Compatibility of La26O27(BO3)8 electrolyte with standard cathode materials for use in proton conducting solid oxide fuel cells
复制标题
La26O27(BO3)8 电解质与用于质子传导固体氧化物燃料电池的标准阴极材料的兼容性
DOI：
10.1016/j.jpowsour.2011.04.041
复制
发表时间：
2011
影响因子：
9.2
通讯作者：
O. Joubert
中科院分区：
文献类型：
--
作者：
K. Kravchyk;É. Quarez;M. Caldes;O. Joubert
研究了质子导电电解质La 26 O27（BO 3）8（LBO）与标准阴极材料La0.7Sr0.3MnO3（LSM）、La0.75Sr0.25Cr0.5Mn0.5O3（LSCM）、La 2NiO 4和Ba0.5Sr0.5Co0.8Fe0.2O3（BSCF）的化学相容性和机械相容性。结果表明，LSM、LSCM和La 2NiO 4阴极在LBO电解液中具有化学和机械稳定性，BSCF与LBO在1150° C热处理后发生反应。基于LBO的对称电池测试表明，LSM和La 2 NiO 4阴极的阴极ASR（面积比电阻）值远低于LSCM阴极（在700° C的潮湿空气中：ASR LSM= 15 Ω cm 2; ASR LSCM= 60 Ω cm 2; ASR L 2 NiO 4= 1 Ω cm 2）。对于LSCM阴极获得的大值可能与其低水平的氧离子电导率有关。最后，复合阴极（CER-CER）的方法被用来优化极化电阻的LSM阴极。制备了具有不同阴极/电解质重量比的几种CER-CER阴极。LSM基复合阴极的ASR最低值为添加50 wt.% LBO到LSM阴极（ASR LSM/LBO= 3.4 Ω cm 2，在700° C的加湿空气中）。
The chemical and mechanical compatibility of proton conducting La 26 O 27 (BO 3) 8 (LBO) electrolyte with standard cathode materials La 0.7 Sr 0.3 MnO 3 (LSM), La 0.75 Sr 0.25 Cr 0.5 Mn 0.5 O 3 (LSCM), La 2 NiO 4 and Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O 3 (BSCF) was investigated. The results show that LSM, LSCM and La 2 NiO 4 cathodes are chemically and mechanically stable with the LBO electrolyte, and BSCF reacts with LBO after heat-treatment of their mechanical ground mixtures at T= 1150° C. Symmetrical cell tests based on LBO demonstrated that the values of the cathode ASR (area specific resistance) are much lower in the case of the LSM and La 2 NiO 4 cathodes than in the case of the LSCM cathode (in humidified air at 700° C: ASR LSM= 15 Ω cm 2; ASR LSCM= 60 Ω cm 2; ASR L a 2 NiO 4= 1 Ω c m 2). The large value obtained for LSCM cathode may be related to the low level of its oxygen ion conductivity. Finally, a composite cathode (CER–CER) approach was used in order to optimize the polarization resistance of the LSM cathode. Several CER–CER cathodes with different cathode/electrolyte weight ratios were prepared. The lowest value of ASR for LSM-based composite cathode was obtained by adding 50 wt.% of LBO to LSM cathode (ASR LSM/LBO= 3.4 Ω cm 2 in humidified air at 700° C).
影响因子：
--
作者：
Matsumoto, Hiroshige;Kawasaki, Yuya;Ishihara, Tatsumi
通讯作者：
Ishihara, Tatsumi