In a breakthrough for sustainable energy, researchers at the Swiss Federal Laboratories for Materials Science and Technology (Empa) have created a biodegradable battery powered by fungi. This innovative battery leverages the metabolism of fungal cells to generate electricity, opening doors to eco-friendly energy solutions for remote regions.
How Does the Fungal Battery Work?
The fungal battery is technically a microbial fuel cell. It employs two types of fungi to create electricity:
Yeast Fungus (Anode): Releases electrons during metabolism.
White Rot Fungus (Cathode): Produces an enzyme that captures and conducts electrons out of the cell.
The fungi are integrated directly into the battery's structure through a 3D-printed electrode made from a cellulose-based ink. This ink not only nourishes the fungi but also ensures the battery's biodegradability. Once the battery’s lifespan ends, the fungi digest the material from the inside, leaving no waste behind.
Activation and Use
The fungal battery can be stored in a dried state and activated on-site by adding water and simple sugars. While it currently generates only small amounts of electricity—sufficient to power a temperature sensor for several days—it shows promise for applications in agriculture and environmental research.
The Bigger Picture: Fungi in Sustainable Innovation
This invention adds to the growing body of research exploring fungi’s potential in creating sustainable solutions, from biodegradable materials to meat alternatives. Carolina Reyes, a leading Empa researcher, emphasizes fungi’s untapped potential in materials science:"Fungi are still under-researched and under-utilized, especially in the field of materials science."
Next Steps
The researchers plan to enhance the fungal battery’s power output and explore other fungi species that might produce electricity. Their work could pave the way for integrating fungi-based technologies into broader sustainable energy systems.
Source: Euronews
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