hiLyte, a startup founded by two graduates of EPFL's School of Engineering (STI), has developed a clean, affordable battery using iron, water, coffee filters and carbon felt. With a single charge, the battery can power an LED bulb for five hours or charge a cell phone. Once used, the liquid inside can be safely released into the environment. The new reusable, four-compartment battery solves most of these problems. To generate power when needed, the user simply has to reload the unit with consumables.
First, sheets of iron foil, coffee-filter paper and carbon felt are inserted through the four doors. Next, the user pours a solution of water and iron sulfate powder inside the battery. As the liquid soaks into the carbon filter, it slowly dissolves the iron foil. This process releases electrons, thereby generating electricity. Users can then harness this power by connecting a lamp or cell phone to the battery's built-in USB port. The reaction produces iron 2 sulfate, a harmless liquid widely used as an agricultural fertilizer.
The battery costs around half as much as a kerosene lamp. The unit itself retails for 12 dollars, while the consumables cost just 12 cents per recharge. Once recharged, the battery produces five hours' worth of electricity.
Vid: https://www.youtube.com/watch?v=XonmniABvJw
https://techxplore.com/news/2020-01-green-battery-home-rural-africa.html
First, sheets of iron foil, coffee-filter paper and carbon felt are inserted through the four doors. Next, the user pours a solution of water and iron sulfate powder inside the battery. As the liquid soaks into the carbon filter, it slowly dissolves the iron foil. This process releases electrons, thereby generating electricity. Users can then harness this power by connecting a lamp or cell phone to the battery's built-in USB port. The reaction produces iron 2 sulfate, a harmless liquid widely used as an agricultural fertilizer.
The battery costs around half as much as a kerosene lamp. The unit itself retails for 12 dollars, while the consumables cost just 12 cents per recharge. Once recharged, the battery produces five hours' worth of electricity.
Vid: https://www.youtube.com/watch?v=XonmniABvJw
https://techxplore.com/news/2020-01-green-battery-home-rural-africa.html
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