研究目的
Investigating the phase structure evolution and pyroelectric energy harvesting performance of Ba(HfxTi1-x)O3 ceramics.
研究成果
Ba(Ti1-xHfx)O3 ceramics were synthesized, and their phase structure evolution was revealed. The maximum pyroelectric energy harvesting density ND=491.30 kJ/m3 was achieved in the BHT5 ceramic. The results suggested that optimal pyroelectric properties can be obtained in the vicinity of the ferroelectric to paraelectric phase-transition region.
研究不足
The study focuses on the phase structure and pyroelectric energy harvesting performance of Ba(HfxTi1-x)O3 ceramics, but the practical application and scalability of these materials for energy harvesting are not discussed.
1：Experimental Design and Method Selection:
Ba(Ti1-xHfx)O3 ceramics were prepared by a conventional solid-state reaction method. The crystal structures of the ceramics were carried out by an XRD system. Raman spectroscopy was performed using a micro confocal Raman spectrometer.
2：Sample Selection and Data Sources:
Ba(Ti1-xHfx)O3 (x=0, x=5% and x=12% abbreviated as BT, BHT5 and BHT12, respectively) ceramics.
3：List of Experimental Equipment and Materials:
XRD system (Bruker, D8 ADVANCE), micro confocal Raman spectrometer (LabRAM HR Evolution, Horiba Jobin Yvon, France).
4：Experimental Procedures and Operational Workflow:
The detailed process and partial list of instruments of characterization are presented in our previous work.
5：Data Analysis Methods:
The evolution of the phase structure was identified by XRD spectrum, dielectric spectroscopy and temperature-dependent Raman spectroscopy.
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