Work

Achieving enhanced piezoelectric performance in three-dimensional interconnected BCZT piezoelectric porous ceramics

Year: 2026

Type: article

Abstract: Piezoelectric ceramics are widely used in the field of sensors due to their ability to sensitively respond to minor stimuli. (Ba 0.85 Ca 0.15 )(Zr 0.1 Ti 0.9 )O 3 (BCZT) piezoelectric ceramics have attracted extensive attention in the sensing field due to their high piezoelectric charge coefficient ( d 33 ). However, the strong coupling between d 33 and the dielectric constant ( ε r ) can degrade the sensing performance. In this study, BCZT porous ceramics with three-dimensionally interconnected pore structure were fabricated using the foam-gelcasting method. The introduction of pores leads to a simultaneous decrease in both d 33 and ε r . Due to the greater reduction in ε r , the piezoelectric voltage coefficient ( g 33 ) has an upward trend, achieving the decoupling of the d 33 and ε r . The piezoelectric voltage coefficient reached 181×10 –3 V·m·N –1 , the with sensitivity of 56.1 V/kPa and the response time of 0.27 s, respectively. This research provides a widely applicable alternative porous material for piezoelectric sensors. • BCZT porous piezoelectric ceramics with 3D interconnected pores were prepared via foam-gelcasting method. • Decoupling of d 33 and was achieved by the introduction of pore structure. • Piezoelectric voltage coefficient ( g 33 ) and sensitivity ( S ) reached 181×10 –3 V·m·N –1 and 56.1 V/kPa in BCZT porous ceramics. • Effect of solid content on the piezoelectric and sensing performance of BCZT porous ceramics was investigated.

Source: Journal of Materiomics

DOI: 10.1016/j.jmat.2026.101183