Surface-modified BaTiO_(3)of 230 nm average grain size were synthesized by coating BaTiO_(3)particles with 3 wt.%Al2O_(3)and 1 wt.%SiO2.Ceramic films of different thicknesses were prepared via tape casting and laminat...Surface-modified BaTiO_(3)of 230 nm average grain size were synthesized by coating BaTiO_(3)particles with 3 wt.%Al2O_(3)and 1 wt.%SiO2.Ceramic films of different thicknesses were prepared via tape casting and laminating processes followed by two-steps sintering method.After sintering,the average grain size of Surface-modified BaTiO_(3)ceramic slightly increased to 275 nm,and great enhancement of AC breakdown strength(BDS)from 184 kV/cm to 665 kV/cm was obtained as the thickness of ceramic films decreased from 63μm to 12μm,resulting in improvement of discharge energy density from 1.14 J/cm3to 4.06 J/cm3.Because of their low-cost,easily fabrication,lead-free,improved AC BDS and discharge energy density,surface-modified BaTiO_(3)ceramic films appeared promising for applications in multilayer energy storage capacitors.展开更多
基金The work was supported by Ministry of Sciences and Tech-nology of China through National Basic Research Program of China(973 Program 2015CB654604)National Natural Science Foundation of China for Creative Research Groups(Grant No.51221291)+1 种基金National Natural Science Foundation of China(Grant No.51272123)CBMI Construction Co.,Ltd.
文摘Surface-modified BaTiO_(3)of 230 nm average grain size were synthesized by coating BaTiO_(3)particles with 3 wt.%Al2O_(3)and 1 wt.%SiO2.Ceramic films of different thicknesses were prepared via tape casting and laminating processes followed by two-steps sintering method.After sintering,the average grain size of Surface-modified BaTiO_(3)ceramic slightly increased to 275 nm,and great enhancement of AC breakdown strength(BDS)from 184 kV/cm to 665 kV/cm was obtained as the thickness of ceramic films decreased from 63μm to 12μm,resulting in improvement of discharge energy density from 1.14 J/cm3to 4.06 J/cm3.Because of their low-cost,easily fabrication,lead-free,improved AC BDS and discharge energy density,surface-modified BaTiO_(3)ceramic films appeared promising for applications in multilayer energy storage capacitors.
