Properties and electrochemical performance of La<sub>0.75sub>Sr<sub>0.25sub>Cr<sub>0.5sub>Mn<sub>0.5sub>O<sub>3鈭?span style='font-style: italic'>未sub>-La<sub>0.2sub>Ce<sub>0.8sub>O<sub>2鈭?span style='font-style: italic'>未sub> composi
- 作者：Manas K. Rath<sup>asup> ; Byung-Hyun Choi<sup>csup> ; Ki-Tae Lee<sup>asup><sup> ; sup><sup>bsup><sup> ; sup><sup>ktlee71@jbnu.ac.krsup>
- 关键词：Solid oxide fuel cells ; Perovskite ; Sol&ndash ; gel ; Oxide anodes ; Carbon deposition
- 刊名：Journal of Power Sources
- 出版年：2012
- 期刊代码：58_03787753
- 类别：ce
- 出版时间：1 September, 2012
- 卷：213
- 期：Complete
- 页码：55-62
- 文件大小：1673 K
摘要
Highly crystalline composite anodes composed of La<sub>0.75sub>Sr<sub>0.25sub>Cr<sub>0.5sub>Mn<sub>0.5sub>O<sub>3鈭?em>未sub>-La<sub>0.2sub>Ce<sub>0.8sub>O<sub>2鈭?em>未sub> (LSCM-LDC) have been synthesized using a simple modified sol-gel method. LSCM is known for its superior redox stability. LDC acts both as an agent that blocks grain growth in LSCM, and reduces the area-specific resistance of the electrode, thereby enhancing the overall electrochemical performance of single cells. However, the carbon deposition rate of LSCM-LDC composite anodes increases with increasing LDC content. The optimal anode composition is 50聽wt.%LSCM-50聽wt.%LDC. This composite has a polarization resistance of 0.081聽惟聽cm<sup>2sup> and 0.130聽惟聽cm<sup>2sup> in H<sub>2sub> and CH<sub>4sub>, respectively, measured at 800聽掳C.