Pyroelectric thermal energy harvesters are intriguing alternatives to thermoelectric devices due to their high thermodynamic efficiency and reduced heat sink requirements. We report a concept for pyroelectric energy harvesters that utilize liquid-based switchable thermal interfaces to achieve thermodynamic cycling frequencies and hence high-power densities. Pyroelectric energy harvesting in thin films of 56/44 P(VDF-TrFE) copolymer is demonstrated at thermodynamic cycle frequencies of the order of 1 Hz and material-level power densities of the order of 100 mW/cm3. The present work demonstrates the viability of high-power density pyroelectric thermal energy harvesters based on liquid-based switchable interfaces and identifies a need for optimized electrode arrays to maximize their potential.
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机译:热电热能收割机由于其高热力学效率和降低的散热器要求而导致热电装置的易于替代品。我们向热电能量收割机报告了一种利用基于液体的可切换热界面来实现热力学循环频率的概念,从而实现高功率密度。在56/44p(VDF-TRFE)共聚物的薄膜中的热电能量收获在1 Hz和材料级功率密度的热力学循环频率下,在100mW / cm 3 sup的阶数的热力学循环频率下进行说明>。本作本作品展示了基于液体基可切换接口的高功率密度热电热能收割机的可行性,并识别优化电极阵列以最大化它们的电位。
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