Electrochemical performance of Nd1.93Sr0.07CuO4 nanofiber as cathode material for SOFC |
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| Authors: | Li-Ping Sun Qiang Li Hui Zhao Ju-Hong Hao Li-Hua Huo Guangsheng Pang Zhan Shi Shouhua Feng |
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| Affiliation: | 1. Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Xuefu Road, Harbin 150080, PR China;2. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130012, PR China |
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| Abstract: | Nd1.93Sr0.07CuO4 nanofibers are prepared by electrospinning technique followed by a simple thermal treatment. The morphology and phase evolution of as-obtained fibers are characterized by TG-DTA, XRD, FT-IR and SEM, respectively. Typical ceramic fiber diameter is 100–200 nm, with length exceeding tens of microns. Rapid heating the nanofiber cathode at 1000 °C for 15 min results in homogeneous porous microstructure and good contact with the CGO electrolyte. EIS analysis of the nanofiber electrode gives a polarization resistance of 0.26 Ω cm2 at 700 °C in air, two times smaller than that from the powder cathode with the same composition. The excellent electrochemical performance can be attributed to the well constructed microstructure of the fiber cathode, which can promote surface oxygen diffusion or adsorption processes on the cathode. |
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| Keywords: | Intermediate temperature solid oxide fuel cell (IT-SOFC) Nd1.93Sr0.07CuO4 nanofiber cathode Electrode reaction |
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