| 新型固体氧化物燃料电池阴极材料Ca2-xSrxFe2O5的电化学性能研究 | |
| Electrochemical Properties of New Cathode Materials Ca2-xSrxFe2O5 for SOFC | |
| 摘要: 采用固相法合成了固体氧化物燃料电池(SOFC)阴极材料Ca2-xSrxFe2O5(x=0.00，0.05，0.10，0.15，0.20)，利用XRD和SEM对其结构和微观形貌进行了表征。结果表明该阴极材料与固体电解质Sm0.8Ce0.2O1.9(SDC)在1 000 ℃烧结时不发生化学反应，且烧结4 h后，二者之 | |
| 关键词: 固体氧化物燃料电池 Ca2-xSrxFe2O5阴极材料 电化学性能 | |
| 基金项目: | |
| Abstract: Cathode materials Ca2-xSrxFeO5 for SOFC (solid oxide fuel cell) were prepared by solid state reaction. The structure and morphology of the electrodes were characterized by XRD and SEM, respectively. The results show that no reaction occurred between the electrode and the Sm0.8Ce0.2O1.9(SDC)electrolyte at 1 000 ℃ and the electrode formed good contact with the electrolyte after sintered at 1 000 ℃ for 4 h. AC impedance spectroscopy measurements were used to study the cathode performance. The charge transfer process was found to be the rate-limiting step of the electrode reactions. The Ca1.95Sr0.05Fe2O5 cathode gave the polarization resistance (Rp) of 0.95 Ω·cm2 at 700 ℃ in air. Ca1.95Sr0.05Fe2O5 cathode exhibits the lowest overpotential of about 100 mV at a current density of 74 mA·cm-2 at 700 ℃ in air. | |
| Keywords: solid oxide fuel cell (SOFC) Ca2-xSrxFe2O5 cathode material electrochemical properties | |
| 摘要点击次数: 1591 | |
| 全文下载次数: 2381 | |
| 李 强,薛兆辉,赵 辉,霍丽华.新型固体氧化物燃料电池阴极材料Ca2-xSrxFe2O5的电化学性能研究[J].无机化学学报,2009,25(8):1349-1353. | |
| 查看全文 查看/发表评论 下载PDF阅读器 | |
| Support information: | |
|
| |
|
| |
|
| |