Citation: SUN Li-Ping, ZHAO Hui, WANG Wen-Xue, LI Qiang, HUO Li-Hua. Electrochemical Performance of La₂CuO₄ Nanotube Materials Prepared via Electrospinning Method[J]. Chinese Journal of Inorganic Chemistry, ;2014, 30(4): 757-762. doi: 10.11862/CJIC.2014.044 shu

Electrochemical Performance of La₂CuO₄ Nanotube Materials Prepared via Electrospinning Method

1.
Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China

Corresponding author: ZHAO Hui,
Received Date: 11 June 2013
Available Online: 10 October 2013
Fund Project: 国家自然科学基金(No.51072048,51102083)；黑龙江省杰出青年科学基金(JC201211) (No.51072048,51102083)；黑龙江省杰出青年科学基金(JC201211)黑龙江省自然科学基金(B201107)资助项目。 (B201107)

La₂CuO₄ nanotubes are successfully synthesized by electro-spinning technology. The structure and morphology of the materials are characterized by XRD, TG-DTA and SEM, respectively. The results show that La₂CuO₄ nanotubes with an average diameter of 150 nm are obtained after sintering at 700 ℃ for 2 h. The La₂CuO₄ nanotube forms sufficient connection with each other, and good contact with the electrolyte after sintering at 900 ℃ for 0.5 h. Comparing the results obtained by Electrochemical Impedance Spectroscopy (EIS), it is clearly observed that the nanotube cathode exhibits superior performance than the powder cathode. The area specific resistance (ASR) of the nanotube cathode is 1.03 Ω·cm² at 700 ℃ in air, whereas for the powder one with the same composition, the ASRis 1.61 Ω·cm². The oxygen partial pressure measurement indicates that the charge transfer process is the rate-limiting step of the nanotube electrode reactions.
- La₂CuO₄ nanotubes;Intermediate temperature solid oxide fuel cell (ITSOFC);cathode materials;electrode reaction
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Electrochemical Performance of La₂CuO₄ Nanotube Materials Prepared via Electrospinning Method