Self-sustaining personal all-day thermoregulatory clothing using only sunlight

作者：Ziyuan Wang, Yiwen Bo, Peijia Bai, S. Zhang, Guanghui Li, Xiangjian Wan, Yongsheng Liu, Rujun Ma, Yongsheng Chen · 发表于：Science · 年份：2023 · DOI：10.1126/science.adj3654 · 被引用次数：242 · 研究领域：Thermal Radiation and Cooling Technologies、Urban Heat Island Mitigation、Transition Metal Oxide Nanomaterials

The human body must stay within a certain temperature range for comfort and safety. However, challenges for thermoregulatory clothing exist for harsh application scenarios, such as full day/night cycles, frigid polar regions, and space travel. We developed a flexible and sustainable personal thermoregulatory clothing system by integrating a flexible organic photovoltaic (OPV) module to directly acquire energy from sunlight and bidirectional electrocaloric (EC) devices. The flexible OPV-EC thermoregulatory clothing (OETC) can extend the human thermal comfort zone from 22°-28°C to 12.5°-37.6°C with a fast thermoregulation rate. The low energy consumption and high efficiency of the EC device allows for 24 hours of controllable and dual-mode thermoregulation with 12 hours of sunlight energy input. This self-powered wearable thermoregulatory platform has a simple structure, compact design, high efficiency, and strong self-adaptability with sunlight as the sole energy source.