Sorption-based atmospheric water harvesting shows promise for water production, but achieving high yields in semi-arid climates remains challenging. This paper introduces a portable, modular water harvester using LiCl-based hygroscopic composite (Li-SHC) sorbents. Li-SHC exhibits significant water uptake capacity. A batch processing mode, addressing the mismatch between water capture and release rates, maximizes daily water yield. The harvester achieved an exceptional 311.69 g day⁻¹ yield in a semi-arid climate with extremely low relative humidity, demonstrating its potential for large-scale, reliable water production.

He Shan, Chunfeng Li, Zhihui Chen, Wenjun Ying, Primož Poredoš, Zhanyu Ye, Quanwen Pan, Jiayun Wang, Ruzhu Wang