Aqueous electrolyte lithium sulfur batteries

This invention describes a lithium-sulfur battery where the liquid part, called the electrolyte, is mostly water. It uses a lithium anode and a sulfur cathode. The electrolyte isn't pure water, though; it must contain at least 10% of a non-aqueous solvent, which the claims specify as a protic liquid, ideally between 10-70%.

Why it matters: Filed before significant advancements in highly concentrated aqueous electrolytes and lithium metal protection strategies. These developments could now offer new pathways to stabilize the lithium anode within the specified aqueous-protic electrolyte.

Status: ExpiredProtection ended and was never renewed
How hard to build: SpecializedLithium handling, electrolyte formulation, cell assembly

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