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Stanford Researchers Demonstrate a New Nanostructured Lithium Sulfide/Silicon Rechargeable Battery System with High Specific Energy

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Yi Cui at Stanford University have demonstrated a new proof-of-concept lithium metal-free battery with high specific energy consisting of a lithium sulfide (Li 2 S)/mesoporous carbon composite cathode and a silicon (Si) nanowire anode. A paper on the novel battery was published online 25 February in the ACS journal Nano Letters.

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U Tokyo team proposes new high-capacity rechargeable battery system based on oxide-peroxide redox reaction

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are proposing a new sealed rechargeable battery system operating on a redox reaction between an oxide (O 2- ) and a peroxide (O 2 2- ) in the cathode. As described in a paper in the Nature open access journal Scientific Reports , the proposed battery system would have a theoretical specific energy of 2,570?Wh Wh kg -1 (897?mAh

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Graphene-sulfur composite as stable high energy capacity cathodes for Li-ion batteries

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Yi Cui and Hongjie Dai report the synthesis of a graphene–wrapped sulfur composite material that shows high and stable specific capacities of up to 600 mAh/g over more than 100 cycles. These problems cause poor cycle life, low specific capacity, and low energy efficiency. Nano Letters Article ASAP doi: /10.1021/nl200658.

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Li-ion sulfur polymer battery shows high energy density as well as safety

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A team from the University of Rome Sapienza has developed a rechargeable lithium-ion polymer battery based on the combination of a high capacity sulfur-carbon cathode, nanostructured Li x Sn-C anode and polysulfide-added PEO-based gel membrane. V, hence with a theoretical energy density ranging from 2700 to 750?Wh

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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 This is the highest performing sulfur cathode in the world, as far as we know.

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Researchers find synergy between lithium polysulfide and lithium nitrate as electrolyte additives prevent dendrite growth on Li metal anodes

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The findings of their study, reported in Nature Communications , allow for re-evaluation of the reactions regarding lithium polysulfide, lithium nitrate and lithium metal, and provide insights into solving the problems associated with lithium metal anodes.

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Samsung researchers propose novel electrolyte system to enable high-capacity Li-metal anodes with large areal capacities

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Although lithium metal is a promising anode material for Li-ion rechargeable batteries due to its theoretical high capacity (3,860?mAh 1 of graphite anodes), it fails to meet cycle life and safety requirements due to electrolyte decomposition and dendrite formation on the surfaces of the lithium metal anodes during cycling.

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