High‐Performance Flexible Thermoelectric Devices Based on All‐Inorganic Hybrid Films for Harvesting Low‐Grade Heat,Advanced Functional Materials

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High‐Performance Flexible Thermoelectric Devices Based on All‐Inorganic Hybrid Films for Harvesting Low‐Grade Heat
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2019-04-18 , DOI: 10.1002/adfm.201900304
Bo Wu ₁ , Yang Guo ₁ , Chengyi Hou ₁ , Qinghong Zhang ₂ , Yaogang Li ₂ , Hongzhi Wang ₁

Affiliation

The fabrication of a flexible thermoelectric (TE) device that contains flexible, all‐inorganic hybrid thin films (p‐type single‐wall carbon nanotubes (SWCNTs)/Sb₂Te₃ and n‐type reduced graphene oxide (RGO)/Bi₂Te₃) is reported. The optimized power factors of the p‐type and n‐type hybrid thin films at ambient temperature are about 55 and 108 µW m⁻¹ K⁻², respectively. The high performance of these films that are fabricated through the combination of vacuum filtration and annealing can be attributed to their planar orientation and network structure. In addition, a TE device, with 10 couples of legs, shows an output power of 23.6 µW at a temperature gradient of 70 K. A prototype of an integrated photovoltaic‐TE (PV‐TE) device demonstrates the ability to harvest low‐grade “waste” thermal energy from the human body and solar irradiation. The flexible TE and PV‐TE device have great potential in wearable energy harvesting and management.

中文翻译：

基于全无机杂化膜的高性能柔性热电器件，用于收集低品位热量

包含柔性，全无机混合薄膜（p型单壁碳纳米管（SWCNT）/ Sb ₂ Te ₃和n型还原氧化石墨烯（RGO）/ Bi ₂）的柔性热电（TE）装置的制造Te ₃）被报道。p型和n型混合薄膜在环境温度下的最佳功率因数分别约为55和108 µW m ^-1 K ^-2，分别。通过真空过滤和退火相结合制造的这些薄膜的高性能可归因于其平面取向和网络结构。此外，具有10条腿的TE设备在70 K的温度梯度下显示出23.6 µW的输出功率。集成式PVTE设备（PV-TE）的原型演示了收集低等级的能力。 “浪费”来自人体和太阳辐射的热能。灵活的TE和PV‐TE设备在可穿戴式能量收集和管理方面具有巨大潜力。

更新日期：2019-04-18

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