China-US team uses graphene composite separator to suppress polysulfide shuttling in Li-S batteries

By mmillikin A team of researchers from institutions in China and the US report the design of a negatively charged graphene composite separator for the effective suppression of the polysulfide shuttling effect in Li-sulfur batteries. The negatively charged 3D porous structure effectively inhibits the translocation of negatively charged polysulfide ions to enable highly robust Li-S batteries.

In their paper on the work published in the journal Joule, the researchers reported that by using a reduced graphene oxide (rGO)/sodium lignosulfonate (SL) composite on the standard polypropylene (PP) separator ([email protected]/PP), they demonstrated a highly robust Li-S battery with a capacity retention of 74% over

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