所属单位：理学院

发表刊物：International Journal of Hydrogen Energy

关键字：BaZr0.1Ce0.7Y0.1Yb0.1O3−δ electrolyte; Proton conducting; Micro-tubular cells; Phase-inversion; Asymmetric structure; Concentration polarization.

摘要：This study employed a simple phase-inversion method to achieve anode-supported micro-tubular solid oxide fuel cells on the basis of the BaZr0.1Ce0.7Y0.1Yb0.1O3−δ proton conducting electrolyte. The typical cell with configuration of Ni-BaZr0.1Ce0.7Y0.1Yb0.1O3−δ|BaZr0.1Ce0.7Y0.1Yb0.1O3−δ| La0.6Sr0.4Co0.2Fe0.8O3-δ-Sm0.2Ce0.8O2-δ. The novel “sponge-like micro-pores electrode | homogeneous porous functional layer” asymmetric pore structure is obtained. Achieved results include: i) the electrodes revealed the single phase collected by the powder X-Ray Diffractometer analysis; ii) observed by Scanning Electron Microscope, the single cell presenting uniform distribution of micro sponge-like pores electrode was well-adhered to the dense and crack-free 12 μm thick electrolyte layer; iii) the cells showed excellent electrochemical performance with the maximum power densities of 1.070, 0.976, 0.815, and 0.700 W·cm-2 at 750, 700, 650 and 600 °C, respectively, characterized by Electrochemical Impedance Spectroscopy; iv) the designed cell clearly indicated a very low concentration polarization value (0.01 and 0.02 Ω·cm2 at 750 and 700 °C). Our findings provide a promising approach to improve intermediate temperature solid oxide fuel cells performance by optimizing the electrode-electrolyte interface microstructure, based on proton and oxide ion mixed conductor electrolytes.

备注：Mingfei Liu, Georgia Institute of Technology Ben H. Rainwater, Georgia Institute of Technology Yaohui Bai, South China University of Technology Yuan Dong, Xi’an University of Posts & Telecommunications

合写作者：董元,Mingfei Liu,Ben H. Rainwater,Yaohui Bai

第一作者：王占民,李隆,陈长城

论文类型：期刊论文

卷号：44 (2019) 16887-16897

ISSN号：0360-3199

是否译文：否

发表时间：2019-05-23