Now, a research team in Singapore has found a way of producing electricity from air moisture.
First, a fabric made of wood pulp and polyester was coated with carbon nanoparticles. Hydrogel made using sea salt was applied to one half, while the other stayed dry.
Positively charged sea-salt ions released after the hydrogel absorbed water reacted with the negatively charged carbon molecules.
A 3㎠ piece of fabric generated a charge of 0.7 volts for over 150 hours.
Connecting three pieces of fabric provides as much electricity as an AA battery but in a more sustainable and cost-effective way.
This invention made sea water both drinkable and powerful.