According to the team leader and computer scientist Rahul Sarpeshkar, the new fuel cells can be a great remedy for paralysis or blindness. Currently, most brain implants are powered through inductive power transfer. The power is transferred either wirelessly or by single use batteries. The major disadvantage of such single use batteries is that they have to be replaced surgically after several years. In comparison, the new fuel cell is made up of platinum (a metal that has good track record of being safe in human body). Moreover, according to Rahul Sarpeshkar the new fuel cell can work for decades with no need of replacement. These new cells will first be tested on humans and animals.
This new fuel cell functions by oxidizing glucose from cerebrospinal fluid at the surface of an activated platinum anode and then converting oxygen to water at the surface of a network of single walled carbon nanotubes embedded in the cathode end of the cell. The fuel cell also utilizes an oxygen gradient to prevent oxygen from reaching the anode and thus possibly creating electro-chemical short circuits. Researchers have also conducted tests to ensure the rate at which cerebrospinal fluid glucose is replenished. The results are satisfactory which means that the method of generating electricity is safe and has no adverse effects. Furthermore, the fuel cell’s oxygen consumption was also checked to make sure that it wouldn’t destabilize oxygen levels in brain.
Though it is still in prototype phase, it sounds promising and efficient. Indeed it would be a great invention to help paralyzed people to live and enjoy life in a better way. Below is a video of how it can be utilized.
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