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Citation: NING De-Zheng, ZHOU De-Feng, XIA Yan-Jie, ZHAO Gui-Chun, MENG Jian. Structure and Electrical Properties of M -Doped Ce_0.9Sm_0.1O_2-δ Based Solid Electrolytes[J]. Acta Physico-Chimica Sinica, ;2010, 26(05): 1202-1206. doi: 10.3866/PKU.WHXB20100509 shu

Structure and Electrical Properties of M -Doped Ce_0.9Sm_0.1O_2-δ Based Solid Electrolytes

1.
School of Chemistry and Life Science, Changchun University of Technology, Changchun 130012, P. R. China; State Key Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China

Received Date: 21 October 2009
Available Online: 23 March 2010

The precursor powder of Ce0.9Sm0.1O2-δ(SDC) containing 5.0×10-4 (w) SiO2 as an impurity (SDCSi) was prepared by the sol-gelmethod and 0-3.0%(molar fraction, x)M was added to the SDCSi powder. The characterizations focused on phase structure, sintering behavior, relative density, electrical conductivity of all the samples were investigated by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and AC impedance spectroscopy. We find that M can reduce the sintering temperature about 100-200 ℃ and increase the relative density of the ceramics. The grain boundary conduction increased markedly for the 1.0%(x) M -loaded SDCSi ceramics as M can mitigate the harmful effects of the SiO2 impurity. These investigations have indicated that M is shown to be an effective sintering aid and a new scavenger of the grain boundary synchronously.
- Solid electrolyte,
- M -doping,
- Scavenger,
- Electrical conductivity
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Structure and Electrical Properties of M -Doped Ce0.9Sm0.1O2-δ Based Solid Electrolytes

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通讯作者: 陈斌, bchen63@163.com

Structure and Electrical Properties of M -Doped Ce_0.9Sm_0.1O_2-δ Based Solid Electrolytes