Key points from article :
University of Fribourg report a new bio-inspired power source.
3D-printed gel layers use charged ions to produce energy.
Soft technology could be used in biological tissue as a continuous battery source.
Inspired by electric eel's specialized organs.
Could eliminate the need for battery replacements in pacemakers and other implants.
The flexible material they utilized is the same one used in contact lenses.
The study was published in the Nature journal.
