A composite approach boosts transduction coefficients of piezoceramics for energy harvesting

作者：Yu, Xiaole; Hou, Yudong^*; Zheng, Mupeng; Zhao, Haiyan; Zhu, Mankang

来源：AIP Advances, 2018, 8(3): 035018.

DOI：10.1063/1.5009628

• ELECTRICAL-PROPERTIES
• PIEZOELECTRIC PROPERTIES
• CERAMICS
• TEMPERATURE
• MICROSTRUCTURE
• ORIGIN
• SYSTEM
• FILMS
• NIO

Piezoelectric energy harvesting is a hotspot in the field of new energy, the core goal of which is to prepare piezoceramics with a high transduction coefficient (d(33)xg(33)). The traditional solid-solution design strategy usually causes the same variation trend of d(33) and epsilon(r), resulting in a low d(33)xg(33) value. In this work, a composite design strategy was proposed that uses PZN-PZT/ZnAl2O4 as an example. By introducing WZnAl2O4, which is nonferroelectric with low epsilon(r), to the PZN-PZT piezoelectric matrix, epsilon(r) decreased rapidly while d(33) remained relatively stable. This behavior was ascribed to the increase of Q(33) caused by an interfacial effect facilitating the formation of micro-domain structure.

• 出版日期2018-3
• 单位北京工业大学