At Binghamton University, assistant professor of computer and electrical engineering Seokheun Choi and two of his students have invented a bio-battery inspired by origami. The microbial fuel cells runs on the bacteria found in just a few drops of dirty water. To produce a charge, the battery uses filter paper alongside a carbon cloth.
The bio-battery was able to generate enough power to light an LED bulb for about 20 minutes. Choi was inspired by a ninja star and origami for the design of the battery. Due to its shape, the bio-battery is actually a series of eight connected batteries. The small battery is about 2.5 inches wide and costs 70 cents to make. A simpler matchbox design battery also designed by Choi costs five cents to make but has less power and voltage. The new bio-battery could be incredible for sustainable energy in the developing world since it runs on bacteria found in dirty water.