Material scientists create fabric alternative to batteries for wearable devices (phys.org)

Wow, I like this, especially since it eliminates the use of batteries. My only concern is whether this will affect our health in the long run, since its new method uses a micro-supercapacitor and combines vapor-coated conductive threads with a polymer film, plus a special sewing technique to create a flexible mesh of aligned electrodes on a textile backing. Do you think this will have adverse effect on us later on in life?