Renbo Zhu

Abstract Energy harvesting devices are the critical components in the self-powered wearable microelectronic systems. However, insufficient electrical output limits their effectiveness as wearable power supplies, and poor moisture/thermal management often causes discomfort, particularly with sweat release. Here, we report a self-powered, self-cooling fabric that not only enhances electrical output but also actively improves wear comfort by pumping out sweat through directional water transport.

1 Introduction With the development of wearable electronic devices, such as health monitoring devices and intelligent interactive systems, the demand of continuous power supply is increasing to guarantee the stable operation of wearable devices.[1] However, the power supply system based on an ionic battery delivers a limited capacity and needs to be frequently charged or replaced, which leads to inconsistent and unsatisfactory operation of wearable devices.[2] While traditional energy...