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A Ni/YSZ composite containing Ce0.9Ca0.1O2−δ particles as an anode for SOFCs |
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| Authors: | Xiqiang Huang Zhiguo Liu Li Pei Yuqiang Liu Zhiguo Zhang |
| Institution: | a Center for Condensed Matter Science and Technology, Harbin Institute of Technology, Harbin 150001, China b Department of Condensed Matter Physics, Jilin University, 119 Jiefang Road, Changchun 130023, China c International Center for Materials Physics, Academia Sinica, Shenyang 110015, China |
| Abstract: | A composite material (hereafter referred to as NYC) containing Ni, Y2O3-stabilized ZrO2 (YSZ) and Ce0.9Ca0.1O2−δ (CC10) particles was prepared and used as the anode of solid oxide fuel cells (SOFCs). The performance of NYC was better than that of conventional Ni/YSZ anodes in terms of anodic overpotential and interface impedance. The additional CC10 particles improved the anode properties. XRD results suggest that a solid solution of YSZ and CC10 was produced. From impedance measurements, it is concluded that the solid solution exhibits substantial electronic conduction. Ni/YSZ/15 wt% Ce0.9Ca0.1O2−δ anodes exhibited the best properties over the experimental temperature range. A SOFC with an anode of Ni/YSZ/15 wt% Ce0.9Ca0.1O2−δ provided the maximum power density and current density. Addition of CC10 with an average particle size of 0.3 μm was more advantageous than that with an average size of 3 μm. |
| Keywords: | A Ceramics A Oxides A Interfaces D Electrochemical properties |
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