By means of the chronoamperometry method and SEM observation, the effects of sintering conditions on the properties of the Pt/YSZ electrodes were studied.

The results indicate that with the sintering time increasing at 850 degrees C, the pore number of the electrode decreases, and the pore size increases; the steady current density of the electrodes after the anodic step potential polarization increases at first and then decreases.  The electrode sintered for 10 h has the highest steady current density and the best activity.  The effects of the sintering temperature on the electrode properties are similar to that of the sintering time.  When the sintering time is kept at 1 h, increasing of the sintering temperature can cause the decrease of the pore number, increase of the pore size and first increase with following decrease of the steady current density of the electrodes after the anodic step potential polarization.  The electrode sintered at 1100 degrees C possesses the largest steady current density and optimal properties.

Author Keywords: Pt/YSZ electrode; sintering time; sintering temperature; chronoamperometry; current density
KeyWords Plus: INTERFACIAL IMPEDANCE; OXYGEN-EXCHANGE; MICROSTRUCTURE; CELLS

Publication name	RARE METAL MATERIALS AND ENGINEERING　　Volume: 39　　Issue: 10　　Pages: 1853-1857　　Published: OCT 2010
Author(s)	Wang Guangwei, Li Heping, Xu Liping, Zhang Lei, Zhang Yanqing, Dou Jing
Corresponding author	WANG Guangwei  wangguangwei@vip.gyig.ac.cn　  1. Chinese Acad Sci, Inst Geochem, Lab Study Earths Interior & Geofluids, Guiyang 550002, Peoples R China   2. Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

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