Chen et al. (2020) used schematics to claim that a temperature-dependent change in polarisation could not lead to a change in polar entropy of single and polycrystalline materials and hence should not be used for estimating electrocaloric effect (ECE) performance using Maxwell relations. Through this article, we explain how this reasoning does not fit well to our ECE estimates for PbZr_0.53Ti_0.47O₃ (PZT) and CoFe₂O₄ (CFO) heterostructures in Vats et al. (2016). In addition, a detailed explanation of the calculation of ECE performance in our heterostructures is presented since Chen et al. (2020) reported difficulty in understanding how ECE calculations in particular temperature ranges, that were away from the highest ECE temperature, were related to the polarisation versus temperature data.

中文翻译：

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X. Chen，V。Shvartsman，DC Lupascu和QM Zhang，Energy Environ对“巨型热电能量收集和多层纳米结构中的负电热效应的评论”。科学，2021，D​​OI：10.1039 / D0EE02548H

Chen等。（2020年）使用示意图声称极化的温度相关变化不会导致单晶和多晶材料的极性熵发生变化，因此不应将其用于通过麦克斯韦关系估算电热效应（ECE）性能。通过本文，我们解释了这种推理如何与我们在Vats等人中对PbZr _0.53 Ti _0.47 O ₃（PZT）和CoFe ₂ O ₄（CFO）异质结构的ECE估计不完全吻合。（2016）。此外，自Chen等人以来，我们对异质结构中ECE性能的计算进行了详细说明。（2020年）报道了在理解特定温度范围内远离最高ECE温度的ECE计算与极化与温度数据之间的关系方面存在困难。