(STUDY FINDS) – A new “just-add-water” disposable paper battery could power small-scale electronics such as smart labels for tracking parcels and medical diagnostic devices.
Since the new invention is made of paper and contains zinc, both of which are biodegradable, scientists say it could help reduce the environmental impact of battery waste. Devised by Dr. Gustav Nyström and colleagues at the Swiss Federal Laboratories for Materials Science and Technology, the battery is made of at least one cell that measures one square centimeter in size.
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Three ink markings cover a rectangular piece of paper, which contains sodium chloride salt, while one end of the paper is covered in wax. On one side of the paper is the first ink marking, which contains graphite flakes and acts as the positive end of the battery. On the other side is another ink marking containing zinc powder, which acts as the negative end of the battery.