Green Car Congress

JULY 27, 2014

(a) Charge and discharge voltage curves in repeated charge/discharge cycles at 45 mA g ?1. b) Charge and discharge voltage curves at various current densities (13.5–1080 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.

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Li-ion Recharge Batteries Battery 225

Green Car Congress

FEBRUARY 26, 2010

A great deal of research has gone into developing silicon as an anode material, including earlier work by Cui and his colleagues, due to its high theoretical charge capacity (4,200 mAh g -1 —more than 10 times that of graphite anodes and much larger than various nitride and oxide materials) and low discharge potential. Click to enlarge.

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Li-ion Recharge Lithium Sulfur Energy 199

Green Car Congress

JANUARY 9, 2013

Electrochemical performance of sulfur–TiO 2 yolk–shell nanostructures. (a) a) Charge/discharge capacity and Coulombic efficiency over 1,000 cycles at 0.5 b) Capacity retention of sulfur–TiO 2 yolk–shell nanostructures cycled at 0.5 C, in comparison with bare sulfur and sulfur–TiO 2 core–shell nanoparticles.

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Lithium Sulfur Batteries Battery Energy Storage 231

Green Car Congress

JULY 2, 2011

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. Electrochemical characterization of graphene-sulfur composites. (a) Nano Letters Article ASAP doi: /10.1021/nl200658. Earlier post.)

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Li-ion Energy Batteries Battery 239

Green Car Congress

JANUARY 23, 2014

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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Li-ion South Korea Lithium Sulfur Batteries 268

Green Car Congress

SEPTEMBER 21, 2011

Unlike Li-ion batteries which use a process called intercalation to insert the ions between molecules in the electrode, Lithium-sulfur batteries rely on a multi-step redox reaction with sulfur that results in a number of stable intermediate sulfide ions. Articles ASAP DOI: 10.1021/nl2027684.

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Li-ion Carbon Batteries Battery 186