| 中温天然气燃料电池复合阳极NiO-La0.75Sr0.25Cr0.5Mn0.5O3-δ-Ce0.8Sm0.2O2-δ的制备和性能研究 |
| NiO-La0.75Sr0.25Cr0.5Mn0.5O3-δ-Ce0.8Sm0.2O2-δ Composite Anode for Natural Gas in Intermediate Temperature Solid Oxide Fuel Cell |
|
| 摘要: 采用共压-共烧结的方法制备了以NiO-La0.75Sr0.25Cr0.5Mn0.5O3-δ-Ce0.8Sm0.2O2-δ复合阳极为支撑、以Ce0.8Gd0.2O2-δ(GDC)为电解质、以La0.8Sr0.2Co0.8Fe0.2O3-δ(LSCF)-Ce0.8Gd0.2O2-δ(GDC)为复合阴极的单电池，在400～700 ℃范围内，以加湿天然气(3% H2O)为燃料气，氧气为氧化气，测试了电池的放电性能。利用XRD、SEM、EDX等手段对复合阳极进行结构、化学相容性、微观型貌和碳元素分析。分析结果表明，符合阳极具有较好的化学相容性，且阳极和阴极具有较好的孔隙、孔道结构。EDX测试结果表明有少量的碳沉积。在600 ℃进行了电池的稳定性测试。测试结果表明，该电池在13 h的测试过程中功率无明显衰减，具有较好的稳定性。复合阳极单电池在600 ℃得到最大电流密度，为215.49 mA·cm-2；最大功率流密度为44.85 mW·cm-2。 |
| 关键词: 中温固体氧化物燃料电池 天然气 NiO/LSCM/SDC 复合阳极 |
| 基金项目: |
| Abstract: Anode-supported solid state fuel cells (SOFCs) based on composite anode NiO-La0.75Sr0.25Cr0.5Mn0.5O3-δ-Ce0.8Sm0.2O2-δ were fabricated by dry-pressing process. The composite cathode and electrolyte were consisted of La0.8Sr0.2Co0.8Fe0.2O3-δ(LSCF)-Ce0.8Gd0.2O2-δ(GDC) and Ce0.8Gd0.2O2-δ(GDC), respectively. The performance of single cell used humidified natural gas(3% H2O) as fuel and oxygen was tested as oxidant was tested from 400 ℃ to 700 ℃. The chemical stability, microstructures and carbon deposition have been investivaged using XRD, SEM, EDX. The results show that composite anode and composite cathode are with better pore microstructure, and the composite anode has good chemical compatibility. EDX measurements showed only a small carbon peaks. We have also tested the stability of the single cell at 600 ℃ for 13 h. The results show that the composite anode exhibits better stability and no degradation is observed in 13 h testing periods. The result of performance tests indicate that the maximum output current density and power density are 215.49 mA·cm-2 and 44.85 mW·cm-2 at 600 ℃, respectively. |
| Keywords: IT-SOFC natural gas NiO-LSCM/SDC composite anode |
| |
| 摘要点击次数: 1370 |
| 全文下载次数: 2021 |
| 李茂华,刘瑞泉.中温天然气燃料电池复合阳极NiO-La0.75Sr0.25Cr0.5Mn0.5O3-δ-Ce0.8Sm0.2O2-δ的制备和性能研究[J].无机化学学报,2008,24(2):195-200. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| Support information: |
|
|
|
|
|
|
