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Perspective: ferroelectric generators for energy transduction
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DOI：10.1088/1361-665X/ae60d3.png)
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Abstract
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Ferroelectric generators (FEGs) produce high energy electrical pulses for a short duration of time. This process is initiated by a high amplitude shock wave that depolarizes a ferroelectric (FE) material in microseconds. A niobium doped lead zirconate titanate composition (2/95/5 PZT) that undergoes a hydrostatic stress induced phase transformation from a FE to an antiferroelectric phase has been the material of choice for this application. Recent research has led to potential alternative materials. These include lead-based perovskite relaxor single crystal FE materials with larger remanent polarization that could increase the output electrical energy, and lead free materials that have increased remanent polarization and can address the environmental concerns associated with the use of lead-based compounds. A review of energy conversion and the properties of 2/95/5 PZT that led to its adoption provide a framework for research on alternative materials. This perspective article reviews the material properties and geometric effects that contribute to FEG performance and discusses where future materials research efforts might lead to the most significant advances of this technology.
Keywords:
ferroelectric generator
FEG
antiferroelectric
2/95/5 PZT
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