|Bio battery, which is based on Energy for activity, that is the ATP and thermal energy commonly used in the living organism, can be obtained from the exchange of the electrons and protons through these two enzymatic reactions. To take advantage of this living organism mechanism, the energy for activity from inside the organism must be removed outside the organism as electrical energy. That is, when the electrons and protons move from enzyme to enzyme, it is necessary to extract just the electrons and divert them through a separate path. Thus Sony used an electron transport mediator so that electrons could be exchanged smoothly between the enzymes and the electrodes that are the entrance and exit to that detour. The principles of the bio battery are based on the energy conversion mechanism in living organisms.
However, in order to create the bio battery, several technologies needed to be developed. These include immobilization of enzymes that are normally incompatible with carbon and metal electrodes, electrode structures, and electrolytes. Mechanisms used in living organisms, are not only friendly to the environment but is also likely to be of practical use as an energy source. This prototype bio battery has achieved the world’s highest power output of 50 mW*2. There are two types of Bio batteries Passive system type & Active type system. In passive type system reactive substances are absorbed in to the electrodes through a process of natural diffusion.
In active type system the reactive substance are introduced by force by technique as string, convection. Bio batteries work similarly to the metabolic process in our bodies, or more specifically the metabolic processes in ruminants and termites that have the ability to digest cellulose. Enzymes break down cellulose into glucose, a central energy source in both animal and plant metabolism and a clean energy source while bio-battery is more environmentally friendly to recycle than metal-based batteries as it creates its own energy from the cellulose found in cardboard and paper.