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The next-wave of high-powered, eco-friendly energy sources could be sitting right on top of your slice of pizza. Always looking for bigger and better ways to do things, and to undoubtedly one-up each other, scientists think they’ve stumbled upon a way to create more efficient batteries, using something quite possibly found in your own backyard: the mellow mushroom.

The plump, rubbery portobello mushroom has been successfully harvested as a lithium-ion battery anode (which powers many electronic devices like smartphones) by using the skins of the popular protein source. Because mushrooms can pretty much be found in excess everywhere, from forests to dead bodies on victims in Hannibal, mushroom powered batteries are a relatively cheap, efficient and environmentally friendly energy source.

Most lithium-ion battery anodes are powered by synthetic graphite, an expensive material to create because it requires a lot of purification and production processes using acids and chemicals that are harmful to the environment. Replacing synthetic graphite in batteries with a biological component that requires little in the way of manufacturing or purification, like a supple shitake or a winsome white button, is a much more sustainable option that saves money and has little ramifications for our big, blue planet.

How did the idea to get creative with creminis come about? Plucky researchers over at the University of California migrated to the mushroom as a possible energy source because they’re so porous. Mushrooms contain a high amount of small cavities that allows air and liquid to circulate through them. That porosity was the key, as batteries require space to store and transfer energy. Essentially, the more porous the battery, the better performing it is.

A high potassium salt concentration also makes mushrooms ideal for a battery component. While most anodes use lithium to fully access a battery’s material from the get-go, the ability for it to do so drops off dramatically from electrode damage. The potassium salt in mushrooms boosts electrolyte-active material by activating more pores, meaning that while lithium batteries degenerate over time, mushroom batteries theoretically only build upon their initial potential, lasting much longer than your typical Energizer.

“With battery materials like this, future cell phones may see an increase in run time after many uses, rather than a decrease, due to apparent activation of blind pores within the carbon architectures as the cell charges and discharges over time,” Brendan Campbell, a student researcher at UC Riverside, said.

As more and more electronics demand the need for lithium-ion batteries, mushrooms may be the key to meeting it. Who would’ve guessed that foul fungi would hold the answer to making our iPhones last that much longer? Mushrooms: they’re not just for fueling vegans or powering up Mario anymore.

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