Multi-stage power-to-water battery synergizes flexible energy storage and efficient atmospheric water harvesting.

ABSTRACT: We propose and demonstrate a multi-stage power-to-water (MSP2W) battery that synergizes flexible energy storage and atmospheric water harvesting (AWH) to address renewable energy intermittency and freshwater scarcity simultaneously. This system integrates high-temperature magnesium oxide-based thermal energy storage (TES) with a modular multi-stage AWH device, using a Reline-based ternary solution to enhance sorption kinetics and enable efficient scalability. The multi-stage AWH configuration, with up to three stages, enhances water production by 51%, reducing energy consumption by 26%, consistent with theoretical analysis. The MSP2W prototype achieves daily water production of 3060 g, fully meeting an adult's demand. The specific energy consumption is as low as 1.13 kWh kg^-‍1,

SUBMITTER: Lin H 

PROVIDER: S-EPMC12700975 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature