Paper, as a foldable, pollution-free, and low-cost material, has become a suitable support substrate for producing flexible thermoelectric (TE) generators to realize waste heat recycling and the application of human-powered electronic devices. We propose a facile fabrication method to modify cellulose paper with inorganic TE powders via vacuum filtration, making a modified paper that possesses good thermoelectric properties. By connecting the modified paper to copper foils, flexible paper-based TE generators (PTGs) are fabricated. The obtained PTG with three units of P–N modules can generate an output voltage of ∼41.2 mV at a temperature difference of 50 K. Based on this modified paper, a thermal sensor that responds to heat sources, such as fingers, is proposed with a rapid response time of 0.25 s. This work offers a promising strategy for the simple fabrication of PTGs, paving the way for achieving the commercial application of self-powered wearable electronics.

纸作为一种可折叠，无污染，低成本的材料，已经成为生产柔性热电（TE）发电机以实现废热回收和人力电子设备应用的合适支撑基材。我们提出了一种简便的制造方法，通过真空过滤用无机TE粉对纤维素纸进行改性，从而制得具有良好热电性能的改性纸。通过将改性纸连接到铜箔，可以制造出基于纸的柔性TE发生器（PTG）。所获得的带有三个PN模块的PTG可以产生〜的输出电压。在50 K的温差下为41.2 mV。基于此改进的论文，提出了一种对热源（例如手指）做出响应的热传感器，其响应时间为0.25 s。这项工作为简化PTG的制造提供了一种有希望的策略，为实现自供电可穿戴电子设备的商业应用铺平了道路。