A thermoelectric-triboelectric hybrid generator for harvesting human thermal and motion energy as an emergency power source in Antarctica

Abstract

Renewable emergency power is highly desirable for Antarctic fieldwork, where conventional power supplies are limited by harsh climate and outdoor mobility requirements. Here, we report a thermoelectric–triboelectric hybrid generator for simultaneously harvesting human thermal energy and motion energy. The motion-driven unit adopts a multilayer PTFE/PA/PU structure, in which the polyurethane layer improves mechanical cushioning and output stability, achieving a maximum voltage of 1140 V. Four thermoelectric modules connected in series enlarge the heat-collection area and deliver 195 mA and 36.1 mW under an 80 K temperature difference. Through an energy management circuit, the electrical outputs of the two generators are effectively integrated to provide stable power for practical loads. In Antarctic demonstrations, hand pressing and body heat were harvested to directly drive low-power devices, including an LED lamp, a doorbell trigger, an electronic clock, and a thermohygrometer. Moreover, an insole-type device was developed to collect walking-induced motion energy and body heat, charge a lithium battery, and power a commercial locator as an emergency energy source. This work provides a practical self-powered strategy for polar rescue and field survival applications.