期刊
SOLID STATE IONICS
卷 324, 期 -, 页码 260-266出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ssi.2018.07.018
关键词
Oxyborate; Sintering aid; K-ion conductivity
资金
- Ministere de l'Enseignement superieur, de la Recherche et de l'Innovation, France
The ionic conductivity of potassium boroantimonate K3Sb4O10(BO3) is studied between 300 and 750 degrees C by AC complex impedance measurement. Ball-milling of the powder prepared by solid state reaction at high temperature increases significantly the relative density of the sintered pellet and therefore the conductivity level which is about 1.5 x 10(-4) S cm(-1) at 400 degrees C. The addition of a glass-type sintering aid increases similarly the relative density but has a detrimental effect over the conductivity level. The low activation energy of K3Sb4O10(BO3) compound, Ea = 0.325 eV, is related to the diffusion of K+ ions through interconnected 1D-tunnels.
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