Dielectric and energy-storage properties of Ba0.85Ca0.15Zr0.10Ti0.90O3 ceramics with BaO-Na2O-Nb2O5-WO3-P2O5 glass addition
arxiv(2024)
摘要
Lead-free Ba0.85Ca0.15Zr0.10Ti0.90O3 (BCZT) ceramics with different
BaO-Na2O-Nb2O5-WO3-P2O5 (BNNWP) glass content, forming (1-x)BCZT-xBNNWP
lead-free ceramics (abbreviated as BCZTx; x=0, 2, 4, 6, and 8wt
synthesized using the conventional solid-state processing route. The XRD
investigation shows the coexistence of tetragonal and orthorhombic phases in
BCZT pure. Likewise, only the tetragonal phase was detected in BCZTx (x = 2-8
wt
as the amount of BNNWP glass additives increases. In addition, BCZT ceramics
Amodified with glass additions showed narrower hysteresis loops and a large
electric field. The BCZT4 showed the highest recovered energy density of 0.52
J/cm3 at 135kV/cm with an energy storage efficiency of 62.4
increased by 6.6 compared to BCZT0 (0.075 J/cm3). The energy density was also
calculated using the Landau-Ginzburg-Devonshire (LGD) theory
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