Engineers at Nanyang University of Technology (NTU) Singapore have invented a thin battery using paper that can run a small fan for up to 45 minutes.
The thickness of this prototype battery is only 0.4 mm, which is equal to the thickness of two human hairs; While its area is only 4 square centimeters.
The battery is made of a special hydrogel cellulose paper with zinc electrodes printed on both sides.
Zinc electrodes are also coated with a very fine gold foil to improve their ability to conduct electricity.
Due to its flexibility, the battery continues to work and is not affected when it is twisted.
In addition, the battery can be cut to the required size if required.
It is also eco-friendly and can be buried in the soil after use, where it dissolves in a few months and disappears completely. And even harmful substances do not enter the soil.
Note: Details of this prototype paper battery have been published in the latest issue of the research journal “Advanced Science”.