Potassium battery
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Researchers claim to have developed a new battery that mixes the best of both liquid and solid batteries. The new design is the first all-liquid-metal battery that can operate at room temperature, and it apparently outperforms lithium-ion batteries.
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Potassium metal batteries could offer a cheap, long-life alternative to lithium cells with similar energy density, but thus far they've been held back by dendrite formation issues. Now, American scientists say the issue is solved and the path clear.
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Stainless steel mesh is often used as filters and screens 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.