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Material charge

Technology

Body heat and sweat generated through sport can be useful.

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.

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