High power density in a piezoelectric energy harvesting ceramic by optimizing the sintering temperature of nanocrystalline powders
High power density in a piezoelectric energy harvesting ceramic by optimizing the sintering temperature of nanocrystalline powders
复制标题
通过优化纳米晶粉末的烧结温度实现压电能量收集陶瓷的高功率密度
DOI：
10.1016/j.jeurceramsoc.2017.06.053
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发表时间：
2017-12
影响因子：
5.7
通讯作者：
Zhu Mankang
中科院分区：
文献类型：
--
作者：
Yue Yunge;Hou Yudong;Zheng Mupeng;Yan Xiaodong;Fu Jing;Zhu Mankang
压电能量收集是新能源领域的研究热点，其核心是制备具有高转导系数（d33×g33）和大机械质量因子（Qm）的压电陶瓷。此外，压电能量采集器的小型化还要求材料具有亚微米级的细晶粒结构。本文采用无压烧结的方法，首次通过高能球磨工艺合成了亚微米结构的掺杂Pb(Zn1/3Nb2/3)O3-Pb(Zr0.5Ti0.5) o3纳米晶粉体，从而避开了煅烧阶段。通过改变烧结温度，定制了该材料的微观结构和能量收集特性。结果表明，1000℃烧结细晶试样（平均晶粒尺寸~ 0.95 μm）的maximumd33×g33value为9627 × 10−15m2/N， qm为774，几乎是纯试样的7倍。在悬臂式能量采集器模式下，1000℃烧结试样在低共振频率为90 Hz、加速度为10 m/s2时获得了1.5 μW/mm3的高功率密度，当加速度增加到50 m/s2时，功率密度进一步提高到29.2 μW/mm3，显示了作为下一代高功率多层能量采集器的潜在应用前景。
Piezoelectric energy harvesting is the research hotspot in the field of new energy, and its core is to prepare piezoelectric ceramics with high transduction coefficient (d33×g33) and large mechanical quality factor (Qm) as well. In addition, the miniaturization of the piezoelectric energy harvester also requires the material to have a submicron fine grain structure. In this work, submicron-structured ternary system, MnO2-doped Pb(Zn1/3Nb2/3)O3-Pb(Zr0.5Ti0.5)O3was constructed by pressureless sintering of nanocrystalline powders, which has been synthesized for the first time by high-energy ball milling route thereby evading the calcination stage. The microstructure and the energy harvesting characteristics were tailored through changing the sintering temperature. It was found that 1000 °C sintered fine-grained specimen (mean grain size ∼0.95 μm) showed the maximumd33×g33value of 9627 × 10−15m2/N, meanwhileQmwas as large as 774, which was almost seven times larger than pure counterpart. In the mode of the cantilever-type energy harvester, a high power density of 1.5 μW/mm3were obtained for 1000 °C sintered specimen at a low resonance frequency of 90 Hz and acceleration of 10 m/s2, which were further increased to 29.2 μW/mm3when the acceleration increased to 50 m/s2, showing the potential applications as a next generation high power multilayer energy harvester.
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影响因子：
4.6
作者：
Mupeng Zheng;Y. Hou;Jingyong Fu;Xinwei Fan;M. Zhu;Hui Yan
通讯作者：
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影响因子：
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作者：
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影响因子：
3.2
作者：
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通讯作者：
FRIEDMAN, H
影响因子：
5.7
作者：
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通讯作者：
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影响因子：
19
作者：
Wu, Jingen;Shi, Huaduo;Dong, Shuxiang
通讯作者：
Dong, Shuxiang