An international team of researchers based at the University of Illinois has developed a flexible battery that can be pasted onto the human skin like an adhesive plaster.
Since conventional batteries are worn directly on the body, it was decided to “compact” several lithium-ion power sources into very thin tiles, connecting them together with wires into one large battery. All this was then “packaged” in a soft, elastic material, covered with more rigid rubber.
As a result, it turned out to be a waterproof and stretchable, like a plaster, battery that can be worn on the body as a mobile battery. Testing showed that the battery can be stretched by 30% without loss of properties.
To demonstrate the possible use of batteries, the developers connected to it a touch device, miniature solar panels and biometric sensors. As a result, a prototype of a medical bracelet was produced, which broadcasts an uninterrupted flow of biosensory data.
The creators of the device assume to adapt it to various types of power sources, for example, working at the expense of the energy of movement of the body or heat. The battery can be integrated into clothing and even socks, ensuring the work of biometric sensors attached to the body, round the clock seven days a week without any recharging.