Flexible thermoelectric generators (TEGs) provide a sustainable solution for directly harvesting low-grade heat from various curved surfaces, presenting a promising potential for feeding energy to personal-electronics or internet-of-things systems. Nevertheless, the room-temperature millivolt output of the cutting-edge all-solid-state flexible material-based TEGs (AF-TEGs) is still unappeasable for flexible electronics in practical applications. Here, we report on an AF-TEG consisting of a 3-level structure based on thin-film carbon nanotube (CNT) assemblies that can generate a high voltage (1.05 V) and sufficient outpower (0.95 mW) at moderate ΔT (~44 and 39 K, respectively) for powering an electrochromic device. The advanced nature of the AF-TEG is that conformation is highly adaptive and programmable, showing the surface suitability which can capture waste heat in both in-plane and out-of-plane direction. Moreover, an AF-TEG power management scheme is proposed for powering a commercial LED and an electronic thermometer, which indicate promising potential for practical applications.

柔性热电发电机 (TEG) 为直接从各种曲面收集低级热量提供了可持续的解决方案，在为个人电子产品或物联网系统提供能量方面具有广阔的潜力。然而，尖端的全固态柔性材料基 TEG（AF-TEG）的室温毫伏输出对于柔性电子产品在实际应用中仍然难以满足。在这里，我们报告了一种 AF-TEG，它由基于薄膜碳纳米管 (CNT) 组件的 3 级结构组成，可以在中等 ΔT (~44和 39 K，分别用于为电致变色装置供电。AF-TEG 的先进性在于构象具有高度的适应性和可编程性，显示可以在面内和面外两个方向捕获废热的表面适用性。此外，提出了一种 AF-TEG 电源管理方案，用于为商用 LED 和电子温度计供电，这表明其在实际应用中具有广阔的潜力。