Electrochemical Performance of La2CuO4 Nanotube Materials Prepared via Electrospinning Method

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 degrees C for 2 h. The La2CuO4 nanotube forms sufficient connection with each other, and good contact with the electrolyte after sintering at 900 degrees C 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 Omega.cm(2) at 700 degrees C in air, whereas for the powder one with the same composition, the ASR is 1.61 Omega.cm(2). The oxygen partial pressure measurement indicates that the charge transfer process is the rate-limiting step of the nanotube electrode reactions.