A series of alkali metal elements doped La2Ce2O7 electrolytes for solid oxide fuel cells

被引:19
作者
Zhang, Mohan [1 ,2 ]
Wang, Di [1 ,2 ]
Miao, Lina [1 ,2 ]
Jin, Zongzi [1 ,2 ]
Dong, Kuan [1 ,2 ]
Liu, Wei [1 ,2 ,3 ]
机构
[1] Univ Sci & Technol China, CAS Key Lab Mat Energy Convers, Hefei 230026, Peoples R China
[2] Univ Sci & Technol China, Collaborat Innovat Ctr Suzhou Nano Sci & Technol, Hefei 230026, Peoples R China
[3] Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China
基金
中国国家自然科学基金;
关键词
Alkali metal element doping; Electrochemical performance; Lanthanum-cerium oxide; Solid oxide fuel cells; HIGH-PERFORMANCE; PROTON CONDUCTOR; SM; DY;
D O I
10.1016/j.elecom.2021.107026
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
A series of alkali metal elements (like Li, Na, K, Rb, Cs) doped La2Ce2O7 were prepared by a citrate combustion method. We systematically investigated the effects of doping from several aspects, such as structure, conductivity, morphology and performance. All powders of La1.85M0.15Ce2O7-8 (M = Li, Na, K, Rb, Cs) have fluorite structures. The electrical conductivity first increases with the increase of ion radius of doped alkali element, and then decreases with the doping of Cesium. La1.85Rb0.15Ce2O7-8 exhibits the highest conductivity of 3 x 10-3 S cm-1 in dry air and 6.21 x 10-3 S cm-1 in wet H2 at 800 ?C. La1.85Rb0.15Ce2O7-8-based single cell exhibits the highest peak power performance with 1031 mWcm-2 at 700 ?C and the stable discharge time of it is more than 200 h. Thus, Rb-doping La2Ce2O7 material is considered as a promising electrolyte in solid oxide fuel cell.
引用
收藏
页数:5
相关论文
共 50 条
  • [21] Structural Stability of La2Ce2O7 as a Proton Conductor: A First-Principles Study
    Zhang, Qingping
    Zheng, Xiao
    Jiang, Jun
    Liu, Wei
    JOURNAL OF PHYSICAL CHEMISTRY C, 2013, 117 (40) : 20379 - 20386
  • [22] Texture-irrelevant thermal conductivity and expansion properties of La2Ce2O7 ceramics
    Lakshya, Annu Kumar
    Sarkar, Himirkanti
    Ali, Faiz
    Chowdhury, Anirban
    THERMOCHIMICA ACTA, 2023, 721
  • [23] Study on new BaCe0.7In0.3O3-δ-Gd0.1Ce0.9O2-δ composite electrolytes for intermediate-temperature solid oxide fuel cells
    Liu, Fengguang
    Dang, Junjie
    Hou, Jie
    Qian, Jing
    Zhu, Zhiwen
    Wang, Zhongtao
    Liu, Wei
    JOURNAL OF ALLOYS AND COMPOUNDS, 2015, 639 : 252 - 258
  • [24] Structural and spectroscopic studies of La2Ce2O7: Disordered fluorite versus pyrochlore structure
    Reynolds, Emily
    Blanchard, Peter E. R.
    Zhou, Qingdi
    Kennedy, Brendan J.
    Zhang, Zhaoming
    Jang, Ling-Yun
    PHYSICAL REVIEW B, 2012, 85 (13):
  • [25] Fabrication and characterization of Nd2-xInxCe2O7 proton-conducting electrolytes for intermediate-temperature solid oxide fuel cells
    Zhang, Bo
    Wu, Kewen
    Peng, Kaiping
    JOURNAL OF POWER SOURCES, 2018, 399 : 157 - 165
  • [26] Thermal and mechanical properties of Ta2O5 doped La2Ce2O7 thermal barrier coatings prepared by atmospheric plasma spraying
    Zhang, Hao
    Su, Junbin
    Duo, Shuwang
    Zhou, Xin
    Yuan, Jieyan
    Dong, Shujuan
    Yang, Xiong
    Zeng, Jinyan
    Jiang, Jianing
    Deng, Longhui
    Cao, Xueqiang
    JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2019, 39 (07) : 2379 - 2388
  • [27] Coke-tolerant La2Sn2O7-Ni-Gd0.1Ce0.9O1.95 composite anode for direct methane-fueled solid oxide fuel cells
    Park, Myunggeun
    Lee, Jin Goo
    Jeon, Ok Sung
    Shin, Tae Ho
    Myung, Jae-ha
    Shul, Yong Gun
    JOURNAL OF ELECTROCERAMICS, 2018, 40 (04) : 323 - 331
  • [28] Microstructures of La2Ce2O7 coatings produced by plasma spray-physical vapor deposition
    Zhao, Cong
    He, Wenting
    Wei, Liangliang
    Guo, Hongbo
    JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2020, 40 (04) : 1462 - 1470
  • [29] Density functional theory study of La2Ce2O7: Disordered fluorite versus pyrochlore structure
    Vanpoucke, D. E. P.
    Bultinck, P.
    Cottenier, S.
    Van Speybroeck, V.
    Van Driessche, I.
    PHYSICAL REVIEW B, 2011, 84 (05)
  • [30] An easily sintered and chemically stable La2-xMgxCe2O7-δ proton conductor for high-performance solid oxide fuel cells
    Wu, Yusen
    Gong, Zheng
    Hou, Jie
    Miao, Lina
    Tang, Haidi
    Liu, Wei
    INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2019, 44 (26) : 13835 - 13842