Many materials have been tailored for sorption-based solar-thermal-driven atmospheric water harvesting (AWH), but AWH devices are still inefficient and unscalable. To close the large gap between materials research and practical application, a hydrogel-based composite sorbent (PCLG) with high adsorption capacity per unit volume has been developed with an optimized honeycomb structure, which has potential applications in global water harvesting. The PCLG sorbent achieves 1.8 g/cm³ water harvested under 30°C and 30% relative humidity (RH). The optimized honeycomb structure enables 50% water absorption improvement due to better heat and mass transfer performance. In outdoor experiments, our water harvester realizes 2.9 L/m²/day of water collected per cycle under natural sunlight. Based on PCLG properties and worldwide weather data, our device can yield up to 6 L/m²/day of water. The high adsorption/desorption hydrogel sorbent and scalable atmospheric water harvester offer a solution for efficiently extracting water from the air to relieve the thirsty world.

许多材料已针对基于吸附的太阳能热驱动大气集水 (AWH) 进行了定制，但 AWH 设备仍然效率低下且不可扩展。为了缩小材料研究与实际应用之间的巨大差距，已开发出一种具有高单位体积吸附容量的水凝胶复合吸附剂（PCLG），该吸附剂具有优化的蜂窝结构，在全球集水方面具有潜在应用。PCLG 吸附剂在 30°C 和 30% 相对湿度 (RH) 下可实现 1.8 g/cm ^{3的水收集量。}由于更好的传热传质性能，优化的蜂窝结构可提高 50% 的吸水率。在户外实验中，我们的集水器实现了 2.9 L/m ²/天在自然阳光下每个周期收集的水。根据 PCLG 特性和全球天气数据，我们的设备可以产生高达 6 L/m ² /天的水。高吸附/解吸水凝胶吸附剂和可扩展的大气集水器提供了一种有效地从空气中提取水以缓解口渴的世界的解决方案。