Power-to-Water Battery

Energy storage system (ESS) can bridge the mismatch between renewable energy (e.g., wind power, solar power) supply and end-users’ demand.

• The surplus renewable electricity from the grid can charge the thermal storage medium via heat pumping or joule heating (e.g., ohmic, induction, microwave).
• The low-cost, environmental-friendly, and high-storage-density medium (e.g., fire brick, molten salts, stones, concrete, paraffin, etc.) stores the excessive renewable energy in a well-insulated container.
• The concentrated hygroscopic solution can absorb the atmospheric moisture or the indoor humidity driven by vapor pressure.

• The module structure is simple, and the working fluid is stable. The deployment does not rely on any specific terrain.
• The microporous polymeric membrane features high specific areas that contribute to high mass flux in a compact structure.
• The TES materials feature high energy storage density which is a benefit to achieving a low energy loss and thus high efficiency.
• The high temperature and active heating strategy enable a higher initial concentration and thus faster sorption kinetics compared with the state-of-art AWH modules.

• 48th International Exhibition of Inventions Geneva (IEIG) - Gold Medal

• Atmospheric water harvesting (AWH)
• Humidity control (dehumidification)

• PWG/PA/1424/2/2023 (USA) Patent number: 63/486,657 (USA)