Pb(Zn_(1/3)Nb_(2/3))_(0.2)(Hf_(1-x)Ti_(x))_(0.8)O_(3)陶瓷压电能量收集特性研究  

Study on Piezoelectric Energy Harvesting Properties of Pb(Zn_(1/3)Nb_(2/3))_(0.2)(Hf_(1-x)Ti_(x))_(0.8)O_(3) Ceramics

作　　者：于肖乐 侯育冬[1] 郑木鹏[1] 朱满康[1] YU Xiaole;HOU Yudong;ZHENG Mupeng;ZHU Mankang(Faculty of Materials and Manufacturing,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]北京工业大学材料与制造学部,北京100124

出　　处：《压电与声光》2022年第4期600-604,609,共6页Piezoelectrics & Acoustooptics

基　　金：北京自然科学基金资助项目(2202008);国家自然科学基金资助项目(51677001和52072010);北京百千万人才基金资助项目(2019A25)。

摘　　要：采用铌铁矿前驱体两步法制备了Pb(Zn_(1/3)Nb_(2/3))_(0.2)(Hf_(1-x)Ti_(x))_(0.8)O_(3)(PZNH_(1-x)T_(x))钙钛矿压电陶瓷,研究了铪钛比对陶瓷相结构、电学性能和能量收集特性的影响。结果表明,当x=0.52时,陶瓷样品位于准同型相界,具有最优综合压电性能:居里温度T_(C)=287℃,品质因数FOM≈14753×10^(-15) m^(2)/N,压电电荷常数d_(33)=492 pC/N。由该组成材料构建的悬臂梁型压电能量收集器输出功率密度高达4.16μW/mm^(3),所转化的电能可成功点亮138盏并联的LED灯。结果表明,PZNHT陶瓷在压电能量收集领域具有良好的应用潜力。The Pb(Zn_(1/3)Nb_(2/3))_(0.2)(Hf_(1-x)Ti_(x))_(0.8)O_(3)(PZNH_(1-x)T_(x))perovskite piezoceramics were prepared by a two-step columbite precursor method.The effects of the ratio of Hf and Ti on the phase structure,electrical performance and energy harvesting characteristics were investigated.The results show that x=0.52 is located at the morphotropic phase boundary,and has the optimal comprehensive piezoelectric properties:Curie temperature T_(C) of 287℃,figure of merit FOM of 14753×10^(-15) m^(2)/N,piezoelectric charge constant d_(33) of 492 pC/N.In addition,the cantilever beam-type piezoelectric energy harvester constructed from x=0.52 sample exhibited an output power density of up to 4.16μW/mm^(3) and the generated power can successfully lit 138 parallel LED lights.The above results show that PZNHT ceramics have good application potential in the field of piezoelectric energy harvesting.

关 键 词：钙钛矿陶瓷 弛豫铁电体 准同型相界 压电性 压电能量收集 

分 类 号：TN384[电子电信—物理电子学] TM282[一般工业技术—材料科学与工程]