A p-type thermoelectric fabric power supply device

With the advent of the information age, wearable thermoelectric fabric devices have garnered significant attention for their ability to harness environmental waste heat and body heat to supply convenient, reliable, and environmentally friendly electricity for next-generation wearable electronics. However, the complex production process and unstable power supply restrict their development. Here, we report a high-performance flexible, dependable, and wearable p-type thermoelectric device consisting of silk threads/polyaniline/amino multiwalled carbon nanotubes through dyeing process. By optimizing the weaving structure and simple assembly, this p-type fabric device generates a voltage of 0.749 ± 0.003 mV, a maximum power of 0.326 ± 0.007 nW, and a power density of 1087.532 ± 22.985 nW·m −2 at a temperature difference of 90 ℃. Besides, this device also possesses an excellent photo-thermoelectric conversion capability and the assembled fabric bracelet can generate an output voltage of approximately 6.1 mV outdoors when worn on the hand of the experimental personnel. This fabric device also exhibits a superb reliable property even after 5000 times of folding. This strategy makes it easy to manufacture a thermoelectric fabric device on a large scale and provides a promising way for wearable electronics.