The ability to combine many functions into a single microchip is a significant advance in the quest to perfect the tiny, self-powered sensors that will expand the Internet of things. KAUST researchers have managed to combine sensing, energy-harvesting, current-rectifying and energy-storage functions into a single microchip.
source https://www.lifetechnology.com/blogs/life-technology-news-blog/single-electrode-material-streamlines-functions-into-a-tiny-chip