Citation: SHENG Shuang, ZHAO Jia-Qi, SUN Li-Ping, HUO Li-Hua, ZHAO Hui. Preparation and Electrochemical Properties of (Pr_0.9La_0.1)₂(Ni_0.74Cu_0.21Ga_0.05)O_4+δ Nanofiber Cathode[J]. Chinese Journal of Inorganic Chemistry, ;2018, 34(2): 247-254. doi: 10.11862/CJIC.2018.043 shu

Preparation and Electrochemical Properties of (Pr_0.9La_0.1)₂(Ni_0.74Cu_0.21Ga_0.05)O_4+δ Nanofiber Cathode

1.
Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
2.
College of International Cooperation Education, Harbin Engineering University, Harbin 150001, China

Corresponding author: SUN Li-Ping, lipingsun98@yahoo.com
Received Date: 25 August 2017
Revised Date: 24 October 2017

Figures(9)

The oxide nanofiber (Pr_0.9La_0.1)₂(Ni_0.74Cu_0.21Ga_0.05)O_4+δ (PLNCG) is prepared by electrospinning technique. The phase and morphology evolution of the oxide nanofiber are characterized by Thermo-gravimetric-Differential thermal analysis (TG-DTA), X-ray diffraction (XRD), fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM), respectively. The results show that PLNCG nanofiber with an average diameter of 420 nm is produced after sintering the precursors at 950℃ for 5 h. The nanofiber cathode is formed with mesh-like morphology and keep good contact with the Ce_0.9Gd_0.1O_2-δ (CGO) electrolyte after heat-treated at 1 000℃ for 2 h. The electrochemical impedance spectrum (EIS) results indicate that the nanofiber cathode exhibits superior performance than the powder cathode. The polarization resistance (R_P) of the nanofiber cathode is 0.134 Ω·cm² at 700℃ in air, which is 32% less than the PLNCG powder cathode (R_P=0.197 Ω·cm²). The maximum power density of electrolyte-support single cell with PLNCG nanofiber cathode (Ni-CGO/CGO/PLNCG) reaches 231 mW·cm^-2 at 700℃. The oxygen partial pressure measurement indicates that the charge transfer process is the reaction rate-limiting step of the nanofiber cathode.
- intermediate temperature solid oxide fuel cell (IT-SOFC),
- PLNCG,
- nanofiber cathode,
- electrode reaction
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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Preparation and Electrochemical Properties of (Pr0.9La0.1)2(Ni0.74Cu0.21Ga0.05)O4+δ Nanofiber Cathode

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通讯作者: 陈斌, bchen63@163.com

Preparation and Electrochemical Properties of (Pr_0.9La_0.1)₂(Ni_0.74Cu_0.21Ga_0.05)O_4+δ Nanofiber Cathode