徐娜,朱腾龙,孙梦真,耿多,徐占林.一步法合成La0.4Sr0.6Co0.2Fe0.7Nb0.1O3-δ-Gd0.2Ce0.8O2-δ对称电极应用于SOFC性能研究[J].稀有金属材料与工程,0,():-.[Xu Na,Zhu Teng-long,Sun Meng-zhen,Geng Duo,Xu Zhan-lin.Co-synthesis of La0.4Sr0.6Co0.2Fe0.7Nb0.1O3-δ-Gd0.2Ce0.8O2-δ symmetrical electrode for SOFC performance study[J].Rare Metal Materials and Engineering,0,():-].
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一步法合成La0.4Sr0.6Co0.2Fe0.7Nb0.1O3-δ-Gd0.2Ce0.8O2-δ对称电极应用于SOFC性能研究
投稿时间:2020-04-23  修订日期:2020-06-18
中文关键词:  一步合成法  LSCFN-CGO  对称型固体氧化物燃料电池  C3H8  稳定性
基金项目:国家自然科学基金资助(51702163);吉林省发展和改革委员会产业技术研究与开发项目(2020C026-4);吉林省教育厅“十三五”科学技术研究项目(JJKH20200423KJ);吉林师范大学博士启动项目(2018009)
中文摘要:
      一步法合成La0.4Sr0.6Co0.2Fe0.7Nb0.1O3-δ-Gd0.2Ce0.8O2-δ(LSCFN-CGO)混合电导对称电极,并采用La0.8Sr0.2Ga0.83Mg0.17O3-δ(LSGM)作为电解质制备了结构为LSCFN-CGO||LSGM||LSCFN-CGO的对称电池。分别使用X射线衍射仪(XRD)和扫描电子显微镜(SEM)对LSCFN-CGO粉体物相及电极微观结构进行分析。一步法制得的LSCFN-CGO电极粉体为纯相,LSCFN钙钛矿相与CGO萤石相具备极好的化学相容性,且烧结得到了良好微观结构的对称电极。采用H2(3% H2O),C3H8(3% H2O)为燃料气测试电池性能,850 ℃电池最大功率密度可分别达980 mW/cm2 和 869 mW/cm2。稳定性测试在C3H8(3% H2O)气氛中0.3 A/cm2的恒流放电条件下进行,全程共420 h,衰减较小,期间进行8次电极氧化还原循环,对称电极具有理想的碳基燃料下氧化还原再生能力。实验结果表明采用一步法合成混合电导电极是一种简便、优化的电极制备方法,具有广阔的应用前景。
Co-synthesis of La0.4Sr0.6Co0.2Fe0.7Nb0.1O3-δ-Gd0.2Ce0.8O2-δ symmetrical electrode for SOFC performance study
英文关键词:one step method  LSCFN-CGO  symmetric solid oxide fuel cell  C3H8  stability
英文摘要:
      In this paper, one step method was investigated to prepare La0.4Sr0.6Co0.2Fe0.7Nb0.1O3-δ-Gd0.2Ce0.8O2-δ (LSCFN-CGO) compound symmetrical electrode, La0.8Sr0.2Ga0.83Mg0.17O3-δ (LSGM) was used as electrolyte and symmetrical cells with a con?guration of LSCFN-CGO||LSGM||LSCFN-CGO were successfully fabricated. Phase-analysis and electrode microstructure of LSCFN-CGO were examined by X-ray diffraction (XRD) and scanning electron microscopy (SEM). LSCFN-CGO was identified to be pure phase and perovskite structured LSCFN chemically compatible with ?uorite structured CGO. Using H2 (3% H2O) and C3H8 (3% H2O) as fuel for the cell, the maximum power densities were 980 mW/cm2 and 869 mW/cm2 at 850 ℃. Moreover, the long-term stability of the cell is demonstrated to be stable for 420 h under constant current of 0.3 A/cm2 using C3H8 (3% H2O) as fuel, 8 redox cycles were carried out, and the symmetrical electrode had ideal redox regeneration ability under carbon-based fuel. Results show that, one step method is a facile and optimized electrode fabrication procedure and owns promising application prospects.
作者单位
徐娜 吉林师范大学 
朱腾龙 南京理工大学 
孙梦真 吉林师范大学 
耿多 吉林师范大学 
徐占林 吉林师范大学 
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