phones, laptops?????

Advantages: Sulfur is cheap and very light,
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, good for packing more capacity into a lighter package???????????

Obstacles: Current versions have short lifetimes and the electrolyte needs work — it tends to dissolve the cathode and react with the anode

Source: Argonne National Lab


During discharge, lithium ions break away from the anode and swim through the liquid electrolyte to reach the sulfur cathode. There,
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, the ions form a covalent bond with the sulfur atoms. Each sulfur atom bonds to two lithium ions,
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, rather than just one,
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, doubling the number of bonds in the cathode of the battery. More chemical bonds means more stored energy, so a lithium-sulfur battery creates more juice than a lithium-ion one. That, combined with sulfur’s light weight, means that,
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, in principle, manufacturers can pack more punch for a given amount of weight, storing four or five times as much energy per gram.
Ultimately,
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, that upgrade could boost an electric vehicle’s range up to as much as 500 miles on a single charge. But first,
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, researchers have to get past the short lifetime of existing lithium-sulfur batteries, which, Crabtree says, is due to a loss of lithium and sulfur in each charge-discharge cycle.
When lithium combines with sulfur, it also forms compounds called polysulfides, which quickly gum up the battery’s insides. Polysulfides form within the cathode during battery discharge,
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, when stored energy is released. Once they dissolve in the battery’s liquid

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