Gelatin-Salt MEG Turns Humidity into Stable Power
Researchers have created a biodegradable Moisture-Electric Generator (MEG) from gelatin, table salt, and activated carbon that harvests energy from ambient humidity. A single unit delivers about 1 volt for over 30 days, and linking units in series can reach up to 90 V and 5 mA to power a 40-LED string, enabling applications in wearable health sensors. The device uses a water-based manufacturing process, relies on non-toxic materials, and biodegrades safely after use, offering a low-impact alternative to conventional batteries.