Stainless steel mesh is often used as filters and screens in facilities such as wastewater treatment plants or in ventilation shafts. But once the material gets coated in rust and weakened, it’s usually just discarded. Now Chinese scientists have figured out a way to take that metal trash and turn into high-performing treasure as electrodes in potassium-ion batteries.
While lithium-ion batteries are widely used today, they’re not without their issues. For starters, they degrade over time, especially if they’re not stored in a cool place. They also have the annoying tendency to explode sometimes and, compared to sodium- or potassium-ion batteries, they are expensive.
lithium batteries, have their challenge as well: Potassium ions are fairly large, so storing them as they transfer back and forth between electrodes in a battery tends to degrade the electrodes themselves.
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