用于热电化学电池的无分离平面互连,ACS Applied Energy Materials

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用于热电化学电池的无分离平面互连
ACS Applied Energy Materials ( IF 5.4 ) Pub Date : 2022-09-28 , DOI: 10.1021/acsaem.2c02778
Ju Hyeon Kim ₁ , Yusu Han ₁ , Gilyong Shin ₁ , Jei Gyeong Jeon ₁ , Hyeong Jun Kim ₁ , Byeong Jun So ₁ , Sungryul Yun ₂ , Tae June Kang ₁

Affiliation

将低品位废热能转化为电能的热电化学电池 (TEC) 在为新兴可穿戴设备和物联网 (IoT) 传感器供电方面表现出极大的可持续性。为了满足实际应用的任何电压要求，两种互连方法，如带状互连和触发器互连，已被广泛用于将 TEC 集成为电气串联。然而，这些方法涉及一次将电解质注入每个电池并可靠地密封电池，这在连接大量 TEC 时变得具有挑战性。为了解决这个问题，我们提出了一种无分离平面串联互连 (SPSI) 配置，该配置允许 TEC 使用单一的电解质注入和密封工艺进行串联电连接，从而形成一种简单的 TEC 集成方法。研究了 SPSI 配置的电化学等效电路，以确定影响 TEC 输出电压和功率的设计参数。作为实际演示，制造了一个由 25 个电池组成的条形 TEC 器件，并将其缠绕在热管上，以将热管表面与其周围环境之间的温差转化为电能。这种互连方法的引入将在 TEC 集成和应用方面取得重大进展。制作了一个由 25 个电池组成的条形 TEC 装置，并将其包裹在热管上，以将热管表面与其周围环境之间的温差转化为电能。这种互连方法的引入将在 TEC 集成和应用方面取得重大进展。制作了一个由 25 个电池组成的条形 TEC 装置，并将其包裹在热管上，以将热管表面与其周围环境之间的温差转化为电能。这种互连方法的引入将在 TEC 集成和应用方面取得重大进展。

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Separation-Free Planar Interconnection for Thermo-electrochemical cells

A thermo-electrochemical cell (TEC) that converts low-grade waste thermal energy into electricity shows great sustainability for powering emerging wearable devices and Internet of Things (IoT) sensors. To meet any voltage requirement for practical applications, two types of interconnection methods, such as banded and flip-flop interconnections, have been widely used to integrate TECs in electrical series. However, these methods involve injecting an electrolyte into each cell one at a time and reliably sealing the cells, which becomes challenging when connecting a large numbers of TECs. To address this issue, we propose a separation-free planar series interconnection (SPSI) configuration that allows TECs to be electrically connected in series using a single electrolyte injection and sealing process, resulting in a simple TEC integration method. An electrochemical equivalent circuit for the SPSI configuration is investigated to determine design parameters affecting the output voltage and power from the TECs. As a practical demonstration, a strip-shaped TEC device consisting of 25 cells is fabricated and wrapped around a heat pipe to convert the temperature difference between the surface of a heat pipe and its surroundings into electricity. The introduction of this interconnection method would induce significant advances in TEC integration and application.

更新日期：2022-09-28

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