WEST LAFAYETTE, Ind. - Researchers are making progress in developing rechargeable batteries based on potassium, a potential alternative to lithium that's less expensive and far more plentiful, and also have shown how to derive carbon for battery electrodes from old tires. 'With the growth of rechargeable batteries for electronic devices, electric vehicles and power grid applications, there has been growing concern about the sustainability and cost of lithium,' said Vilas G. Pol, an associate professor in the Davidson School of Chemical Engineering at Purdue University. 'In the last decade, there has been rapid progress in the investigation of metal-ion batteries beyond lithium, such as...
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