Preparation of Bi1.5ZnNb1.5O7(BZN) Film Material for Capacitors with High Energy Storage Density for Reliable Measuring Device of Smart Distribution Networks
Preparation of Bi1.5ZnNb1.5O7(BZN) Film Material for Capacitors with High Energy Storage Density for Reliable Measuring Device of Smart Distribution Networks. [J]. Power capacitor & reactive power compensation, 2019, 40(3): 84-88.
Preparation of Bi1.5ZnNb1.5O7(BZN) Film Material for Capacitors with High Energy Storage Density for Reliable Measuring Device of Smart Distribution Networks. [J]. Power capacitor & reactive power compensation, 2019, 40(3): 84-88. DOI: 10.14044/j.1674-1757.pcrpc.2019.03.016.
With the development of power distribution network toward reliability
stability
safetyand interactivity
which sets higher requirement for the charging performance of power capacitor.For preparing dielectric material of power capacitor with high energy density
Bi
1.5
ZnNb
1.5
O
7
(BZN)thin film is prepared on Pt-Si substrates by the use of magnetron sputteringtechnology. The crystallizationperformance of BZNfilm is improved significantly through post-annealing treatment in the
oxygen. The dielectric constant
loss tangent
leakage current density
breakdown field strength and energy density of BZN film at different annealing treatment are tested and studied
showing that the annealing treatment in the oxygen can improve electrical performance of BZN film. After annealing treatment above the oxygen pressure of 10 000 Pa
the energy storage density of BZN film reaches around 9.0 J/cm
3
which is about 4.5 times that of the un-annealed BZN film.
关键词
电力电容器薄膜储能密度击穿场强介电常数
Keywords
power capacitorfilmenergy storage densitybreakdown field strengthdielectric constant