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Chalmers team develops graphite-like anode for Na-ion batteries; Janus graphene

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Researchers at Chalmers University of Technology, Sweden, have developed a nanometric graphite-like anode for sodium ion (Na + storage), formed by stacked graphene sheets functionalized only on one side, termed Janus graphene. Na is comparable to graphite for standard lithium ion batteries. The estimated sodium storage up to C 6.9

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24M emerges from stealth mode with new semi-solid Li-ion cell; <$100/kWh by 2020

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Stealth-mode battery start-up 24M has introduced its new semi-solid lithium-ion cell. Together, our inventions achieve what lithium-ion has yet to do—meet the ultra-low cost targets of the grid and transportation industries. By 2020 our battery costs will be less than $100 a kilowatt-hour (kWh).

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Researchers develop rechargeable hybrid-seawater fuel cell; highly energy density, stable cycling

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As described in an open access paper in the journal NPG Asia Materials , the system is an intermediate between a battery and a fuel cell, and is accordingly referred to as a hybrid fuel cell. Sodium can serve as an alternative to lithium in rechargeable batteries as the reversible storage mechanisms for sodium ions are very similar (e.g.,

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PNNL study outlines requirements for grid storage, reviews four electrochemical energy storage systems: vanadium redox flow, Na-beta, Li-ion and lead-carbon

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published in the ACS journal Chemical Reviews , reviews in detail four stationary storage systems considered the most promising candidates for electrochemical energy storage: vanadium redox flow; sodium-beta alumina membrane; lithium-ion; and lead-carbon batteries. In their study, Yang et al. Credit: ACS, Yang et al. Click to enlarge.

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Researchers show nitrogen- or born-doped graphene can serve as high-power and high-energy anodes for Li-ion batteries

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Ragone plots for the pristine graphene, N-doped graphene, B-doped graphene, graphene oxide (GO), and GO500 based cells with lithium metal as the counter/reference electrode. The doped graphene shows a high reversible capacity of >1040 mAh g –1 at a low rate of 50 mA g –1. Credit: ACS, Wu et al. Click to enlarge. —Wu et al.

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ARPA-E to award $30M to increase performance of solid ion conductors for batteries, fuel cells

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IONICS also seeks to develop and apply methods for processing of solid ion conductors and their integration into electrochemical devices. Program Categories include: Lithium (Li) ion conductors that enable the cycling of Li metal without shorting; Selective and low-cost separators for batteries with liquid reactants (e.g.,

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Why Warren Buffett is investing in electric car company BYD - Apr. 13, 2009

Tony Karrer Delicious EVdriven

MidAmericans David Sokol, BYDs Wang, and company advisor Li Lu flew with Sokol from Detroit to Omaha so that Wang could meet Buffett in person. BYD claims to have achieved a breakthrough with its lithium ion ferrous phosphate technology, but no one can be sure whether it will work as promised. executive who has studied BYD.

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