The main problem with batteries is that they are still too large, relatively heavy and expensive to produce. Which makes an impractical in many applications where size and weight ratio are important factors. Researchers at Fraunhofer research facility in Germany have developed a new ultra-thin and inexpensive battery which could help develop new applications and devices that require a light then and inexpensive battery.
Using printable electronics to create electronic circuits on low-cost materials and creating batteries that way less than 1 g each and less than a millimetre thick. They hope to deal to produce these environmentally friendly batteries are less than $.10 apiece.
The batteries are created of different layers combining zinc anode and a manganese cathode which interact with one another to produce electricity. However the poles of the batteries tend to gradually dissipate during the life cycle, which makes them unsuitable for applications where reliability and a long, steady life cycle are essential but would be an excellent power source for LEDs and other low-power devices.