Property optimization of nano TiO2-based composite glass ceramics for energy-storage applications
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In this search, the nanocomposite of the rutile nano TiO2 and alkali-free glass (CaO–MgO–Al2O3–SiO2) were successfully produced by the method of sol–gel, which were sintered at 1200 °C for 2 h. The dielectric properties of the composites were studied. The permittivity of the composite with 15 % alkali-free glass addition is 114, while the breakdown voltage is 52.2 kV/mm and the energy density reaches 1.08 J/cm3 with low loss (<0.01), which is 1.4 times higher than that of pure TiO2 (0.76 J/cm3).
KeywordsTiO2 Rutile Pure TiO2 Breakdown Strength Energy Storage Density
This work is supported by the State Key Program of National Natural Science of China (Grant Nos. 50932002 and 51172035).
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