Almost all currently operating implants, for example, pacemakers, operate on traditional batteries containing toxic substances that pose a potential danger to the body. Another negative point is the need to replace them, which is associated with surgical intervention.
The new energy storage system, developed by a group of researchers at the Universities of California and Connecticut, is called a "biological supercapacitor." Its main feature: it does not need to be replaced. The secret is that the battery is charged with "electrolytes" in the body, such as blood serum or urine. The biological supercapacitor can also convert the heat of the body and human movement into energy.
The device consists of modified graphene oxide, a nanocomposite material that is a mixture of layered graphene with modified proteins, absolutely safe for humans.
A bioelectric capacitor is a flexible electronic device only a micrometer thick, which completely eliminates any problems associated with changes in body position. In terms of power, the power supply is in no way inferior to thin-film batteries, now used in pacemakers.
“Combining power from multiple sources with a supercapacitor will help provide power to implantable devices continuously without the need to replace them. - explained Maher El-Kadi, a project participant from the University of California, - Our research is focused on fulfilling an order to develop a supercapacitor and finding ways to make it compatible with the human body.