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Soft and Stretchable Thermoelectric Generators Enabled by Liquid Metal Elastomer Composites
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-04-03 , DOI: 10.1021/acsami.9b19837 Mason Zadan 1 , Mohammad H. Malakooti 2 , Carmel Majidi 3, 4
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-04-03 , DOI: 10.1021/acsami.9b19837 Mason Zadan 1 , Mohammad H. Malakooti 2 , Carmel Majidi 3, 4
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Stretchable thermoelectric generators (TEGs) capable of harvesting electrical energy from body heat under cold weather conditions have the potential to make wearable electronic and robotic systems more lightweight and portable by reducing their dependency on on-board batteries. However, progress depends on the integration of soft conductive materials for robust electrical wiring and thermal management. The use of thermally conductive soft elastomers is especially important for conforming to the body, absorbing body heat, and maintaining a temperature gradient between the two sides of the TEGs in order to generate power. Here, we introduce a soft-matter TEG architecture composed of electrically and thermally conductive liquid metal embedded elastomer (LMEE) composites with integrated arrays of n-type and p-type Bi2Te3 semiconductors. The incorporation of a LMEE as a multifunctional encapsulating material allows for the seamless integration of 100 thermoelectric semiconductor elements into a simplified material layup that has a dimension of 41.0 × 47.3 × 3.0 mm. These stretchable thermoelectric devices generate voltages of 59.96 mV at Δ10 °C, 130 mV at Δ30 °C, and 278.6 mV and a power of 86.6 μW/cm2 at Δ60 °C. Moreover, they do not electrically or mechanically fail when stretched to strains above 50%, making them well-suited for energy harvesting in soft electronics and wearable computing applications.
中文翻译：
液态金属弹性体复合材料实现的柔软可伸缩热电发电机
能够在寒冷天气条件下从人体热量中收集电能的可伸缩热电发电机（TEG）可以通过减少对车载电池的依赖性，使可穿戴电子和机器人系统更加轻巧和便携。但是，进展取决于软导电材料的集成以实现可靠的电气布线和热管理。导热柔软的弹性体的使用对于贴合人体，吸收人体热量以及保持TEG两侧之间的温度梯度以发电是特别重要的。在这里，我们介绍一种软物质TEG架构，该架构由导电和导热的液态金属嵌入弹性体（LMEE）复合材料组成，具有集成的n型和p型Bi 2阵列Te 3半导体。通过将LMEE作为多功能封装材料，可以将100个热电半导体元件无缝集成到尺寸为41.0×47.3×3.0 mm的简化材料叠层中。这些伸缩性热电装置产生在Δ10℃下59.96毫伏的电压，130毫伏在Δ30℃，278.6毫伏和86.6μW/ cm的功率2在Δ60℃。此外，它们在拉伸到超过50％的应变时不会发生电气或机械故障，从而使其非常适合于软电子产品和可穿戴计算应用中的能量收集。
更新日期：2020-04-03
中文翻译：
液态金属弹性体复合材料实现的柔软可伸缩热电发电机
能够在寒冷天气条件下从人体热量中收集电能的可伸缩热电发电机（TEG）可以通过减少对车载电池的依赖性，使可穿戴电子和机器人系统更加轻巧和便携。但是，进展取决于软导电材料的集成以实现可靠的电气布线和热管理。导热柔软的弹性体的使用对于贴合人体，吸收人体热量以及保持TEG两侧之间的温度梯度以发电是特别重要的。在这里，我们介绍一种软物质TEG架构，该架构由导电和导热的液态金属嵌入弹性体（LMEE）复合材料组成，具有集成的n型和p型Bi 2阵列Te 3半导体。通过将LMEE作为多功能封装材料，可以将100个热电半导体元件无缝集成到尺寸为41.0×47.3×3.0 mm的简化材料叠层中。这些伸缩性热电装置产生在Δ10℃下59.96毫伏的电压，130毫伏在Δ30℃，278.6毫伏和86.6μW/ cm的功率2在Δ60℃。此外，它们在拉伸到超过50％的应变时不会发生电气或机械故障，从而使其非常适合于软电子产品和可穿戴计算应用中的能量收集。
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