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ANL team develops new class of Li- and Na- rechargeable batteries based on selenium and selenium-sulfur; greater volumetric energy densities than sulfur-based batteries

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Cycling performance of Li/SeS 2 ?C, Researchers at Argonne National Laboratory have developed selenium and selenium–sulfur (Se x S y )-based cathode materials for a new class of room-temperature lithium and sodium batteries. Unlike the widely studied Li/S system, both Se and Se x S y can be cycled to high voltages (up to 4.6

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Researchers call for integration of materials sustainability into battery research; the need for in situ monitoring

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In their paper, they discuss key advances in both more sustainable chemistries and operando techniques, along with some of the remaining challenges and possible solutions, as we personally perceive them. Note the trend in abundances of Al > Ca > Mg > Na > Li, and Fe > Mn > Ni > Co. —Grey and Tarascon. Elemental resources.

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