首页> 外文期刊>Journal of power sources >Electrochemical properties of the Sm_(0.5)Sr_(0.5)CoO_3-La_(0.8)Sr_(0.2)Ga_(0.8)Mg_(0.15)Co_(0.05)O_3 (LSGMC5)/LSGMC5 interface modified by an LSGMC5 interlayer synthesized using the citrate method
【24h】

Electrochemical properties of the Sm_(0.5)Sr_(0.5)CoO_3-La_(0.8)Sr_(0.2)Ga_(0.8)Mg_(0.15)Co_(0.05)O_3 (LSGMC5)/LSGMC5 interface modified by an LSGMC5 interlayer synthesized using the citrate method

机译:Sm_(0.5)Sr_(0.5)CoO_3-La_(0.8)Sr_(0.2)Ga_(0.8)Mg_(0.15)Co_(0.05)O_3(LSGMC5)/ LSGMC5界面的电化学性质,该界面由柠檬酸盐合成的LSGMC5中间层修饰方法

获取原文
获取原文并翻译 | 示例
       

摘要

A La_(0.8)Sr_(0.2)Ga_(0.8)Mg_(0.15)Co_(0.05)O_3 (LSGMC5) interlayer synthesized using the citrate method was added between an Sm_(0.5)Sr_(0.5)CoO_3 (SSC)-LSGMC5 electrode and an LSGMC5 electrolyte pellet synthesized using a solid-state reaction, and we found that the electrode activity was improved dramatically. The SEM images of the samples demonstrated that the contact between the electrode and the interlayer was much better than the contact between the electrode and electrolyte without the interlayer. The addition of the interlayer resulted in an increased three-phase boundary length and electrode/electrolyte two-phase interfacial area. An SSC-LSGMC5 electrode sintered at 1123 K deposited onto an interlayer sintered at 1673 K exhibited the highest performance among the samples studied. The electrode resistance was about 0.08 OMEGA cm~2 at near equilibrium conditions, and the cathodic overpotential at a current density of 1 A cm~(-2) was only about 70 mV at 973 K in oxygen. The introduction of the interlayer did not change the oxygen reaction mechanism, and the significant increase in electrode performance was due to the increase in the number of active sites for oxygen reduction.
机译:在Sm_(0.5)Sr_(0.5)CoO_3(SSC)-LSGMC5电极之间添加使用柠檬酸法合成的La_(0.8)Sr_(0.2)Ga_(0.8)Mg_(0.15)Co_(0.05)O_3(LSGMC5)中间层。并且使用固态反应合成了LSMGC5电解质颗粒,我们发现电极活性得到了显着提高。样品的SEM图像表明,电极和中间层之间的接触比没有中间层的情况下电极和电解质之间的接触好得多。添加中间层导致增加的三相边界长度和电极/电解质两相界面面积。在研究的样品中,以1123 K烧结的SSC-LSGMC5电极沉积在以1673 K烧结的中间层上。在接近平衡条件下,电极电阻约为0.08 OMEGA cm〜2,在973 K的氧气中,电流密度为1 A cm〜(-2)时的阴极超电势仅为约70 mV。引入中间层并没有改变氧的反应机理,并且电极性能的显着提高是由于减少氧的活性位点数量的增加。

著录项

相似文献

  • 外文文献
  • 中文文献
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号