摘要
采用流延法制得LSCM-YSZ阳极支撑层/Ni-ScSZ阳极活性层/ScSZ电解质层复合膜,在LSCM-YSZ支撑层上印刷一层Cu-LSCM-CeO2阳极催化层,即Cu-LSCM-CeO2/LSCM-YSZ/Ni-ScSZ功能梯度层阳极.研究表明,Cu/LSCM/CeO2质量配比为2:7:1功能梯度阳极(LSCM-YSZ2010)有较好的性能,单电池以氢气和乙醇为燃料(750oC)最大功率密度分别为511和390 mW·cm-2.单电池稳定性实验表明,LSCM-YSZ2010阳极单电池以乙醇为燃料750oC长时间运行218 h,性能稳定.X-射线能量散射分析表明该阳极具有较好的抗碳沉积性能.
Solid oxide fuel cell （SOFC） directly operating on hydrocarbon without external reforming has the potential of greatly speeding up the application of SOFCs for transportation. In this paper, a three-layer structure anode was fabricated by tape casting and screen printing method. The addition of Cu-LSCM-CeO2 to the supported anode surface presented better performance running on H~ and ethanol. The maximum power densities were 511 and 390 mW·cm-% respectively running on H2 and ethanol at 750 ℃. No significant degradation was observed on the anode. Consequently, the Cu-LSCM-CeO2 catalyst layer on the surface of the LSCM-YSZ support layer makes it possible to have good stability for long-term operation in ethanol fuel due to free carbon deposition.
出处
《电化学》
CAS
CSCD
北大核心
2014年第5期470-475,共6页
Journal of Electrochemistry
基金
国家自然科学基金项目(No.51201098)资助
关键词
固体氧化物燃料电池
催化层
碳沉积
阻抗谱
电化学性能
solid oxide fuel cell
catalyst layer
carbon deposit
impedance spectra
electrochemical performance
