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The present invention increases the viability of sodium polysulfide catholytes for nonaqueous redox flow batteries. Low order polysulfides (Na2Sx, x<5) have poor solubility (and thus low capacity) in common aprotic solvents.

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Nearly all electrochemical approaches to CO2 conversion rely on traditional fuel cell type electrocatalysis where CO2 is bubbled through acidic or basic media. The resulting electrochemistry leads to excessive generation of H2 over micromoles of CO2 conversion.

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The invention is a material that will selectively absorb lithium from process waters, and then in a subsequent step, allow the lithium to be released and concentrated; allowing efficient lithium extraction from fluids for use as commodity chemicals.