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Drexel team develops stable Li-S battery with carbonate electrolyte

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sulfur phase within carbon nanofibers that enables successful operation of Lithium-Sulfur (Li-S) batteries in carbonate electrolyte for 4000 cycles. Carbonates are known to adversely react with the intermediate polysulfides and shut down Li-S batteries in first discharge. —Pai et al.

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

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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 (rGO@SL/PP), they demonstrated a highly robust Li-S battery with a capacity retention of 74% over 1,000 cycles. … 2018.07.022.

Li-ion 210
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New cathode material for Li-S batteries: sulfur-anchored azulene

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As described in an open-access paper in the RSC journal Chemical Communications ,the polymer exhibits high sulfur content and offers longer lifetime stability compared to pure sulfur, providing new protocols to develop new cathode materials for Li-S batteries. Cycling performance of Az-S and pure sulfur at 0.3 Chen et al.

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Sulfur–TiO2 yolk-shell cathode for Li-sulfur battery shows best long-cycle performance so far

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Researchers at Stanford University and SLAC led by Stanford associate professor Yi Cui have used a sulfur–TiO 2 yolk–shell design for a cathode material for a lithium-sulfur battery that achieved an initial specific capacity of 1,030?mAh?g Click to enlarge. C and Coulombic efficiency of 98.4% over 1,000 cycles. Click to enlarge.

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Researchers synthesize new Li-S cathode based on “carbon compartments”

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Researchers from Texas A&M and Purdue have developed a new cathode material for Li-S batteries based on what they call carbon compartments (CCs)—conductive 3D carbon mesostructures that possess macro- and meso-pores that allow for high loading of sulfur nanoparticles and enhanced electrolyte-sulfur contact.

Carbon 150
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Argonne researchers advancing new class of selenium sulfide composite cathodes that could boost Li-ion energy density 5x

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carbon composite as cathodes in ether-based electrolyte. New composite materials based on selenium (Se) sulfides used as the cathode in a rechargeable lithium-ion battery could increase Li-ion density five times, according to research carried out at the US Department of Energy’s Advanced Photon Source at Argonne National Laboratory.

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A closer look at graphite—its forms, functions and future in EV batteries

Charged EVs

Graphite is a pure form of carbon. Its physical structure allows it to store lithium ions. This crystalline carbon allotrope is good for more than just pencils—it’s found in every EV battery anode, and producing graphite in the forms needed to build high-performance battery cells is a complex and exacting process.

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