Scientists foldable paper battery based on bacteria




Researchers from the University of Birmingham have a paper, foldable battery made that extracts energy from bacteria. The battery is designed to sensors and other devices that require little electricity to provide energy.

origami battery The system is primarily intended to provide disposable sensors energy cheaply. By using paper, do not need a separate reservoir for the bacteria to be made: the paper acts as a reservoir. By subsequently the different batteries as to be folded that they are in series, they can deliver more energy.

The researchers were able to provide only a drop of water with bacteria sufficient energy. The bacteria produce energy through metabolism: When bacteria process certain substances, releases electrons that can be surrendered to the carbon anode. Normal ‘dirty’ water contains enough bacteria to make the paper machine producing energy, write the researchers in their paper. After about eighteen minutes yielded the tested set up a voltage of 0,93V.

It consists of an anode, paper, a PEM with on top of the cathode. The cathode does not contain expensive metals, but is formed by nickel which is sprayed onto the paper. The anode consists of carbon-containing paint.

Also, it is not necessary to include small pumps in the whole in order to get the water in the right place: the paper draws the water out of themselves already on. All in all, the whole according to the builders costs less than five cents each.


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