Can portabella mushrooms stop cell phone batteries from degrading over time? Researchers at the University of California, RiversideBourns College of Engineering think so.According to their research, “they have created a new type of lithium-ion battery anode using portabella mushrooms, which are inexpensive, environmentally friendly and easy to produce. The current industry standard for rechargeable lithium-ion battery anodes is synthetic graphite, which comes with a high cost of manufacturing because it requires tedious purification and preparation processes that are also harmful to the environment. 
UC Riverside engineers were drawn to using mushrooms because they are porous. This allows for liquid or air to pass through. The high potassium salt concentration also allows for increased electrolyte-active material increasing its capacity.
This is obviously a complex finding, which you can read about in more detail here: https://ucrtoday.ucr.edu/31442. What is exciting is looking at how nature (and food!) can be a useful tool in enhancing our man-made technology. How’s that for a friendly fungus?!?!!??