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PNNL: single-crystal nickel-rich cathode holds promise for next-generation Li-ion batteries

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High-energy nickel (Ni)–rich cathode will play a key role in advanced lithium (Li)–ion batteries, but it suffers from moisture sensitivity, side reactions, and gas generation. The gliding occurs as the battery charges and discharges—lithium ions depart and return to cathode, straining the crystal ever so slightly each time.

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New halogen conversion-intercalation chemistry enables high-energy density aqueous Li-ion battery

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volts versus Li/Li +. Combining this cathode with a passivated graphite anode, the team created a 4V-class aqueous Li-ion full cell with an energy density of 460 Wh kg -1 of total composite electrode and about 100% Coulombic efficiency. A team of researchers led by a group from the University of Maryland has.

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ecovolta develops standardized Li-ion traction battery; saving cost and time

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The Swiss battery system manufacturer ecovolta has developed a standardized Li-ion traction battery which can significantly reduce the time and expense needed to bring electric vehicles to the serial production stage. The evoTractionBattery is available with a voltage of 24 volts, 48 volts and 400 volts as well as a capacity of 2.5

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US Army, Brown Univ. partner to study SEI on silicon anodes to extend Li-ion battery life

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The Army is working to replace all alkaline and nickel metal hydride field batteries with Li-ion batteries. “ The Army is developing hybrid vehicles for use on the battlefield, and that means they will also use Li-ion batteries. We want to push the voltage of Li-ion batteries higher. ”.

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Novel hybrid electrolytes to enable high-safety high-voltage Li-ion batteries

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Researchers at the Ningbo Institute of Materials Technology & Engineering in China have developed new hybrid electrolytes to support high-voltage Li-ion batteries (e.g., ~5 5 volts) by incorporating a liquid electrolyte with silane-Al 2 O 3 nanoparticles (Al 2 O 3 -ST for short). 2018.04.060.

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U Tokyo TFEP electrolyte solvent enables safer high-voltage, high energy-density Li-ion batteries

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Researchers at the Graduate School of Engineering and Graduate School of Science at the University of Tokyo have designed and synthesized a fluorinated cyclic phosphate solvent, 2-(2,2,2-trifluoroethoxy)-1,3,2-dioxaphospholane 2-oxide (TFEP), for use in lithium-ion batteries. © 2020 Yamada et al. —Professor Atsuo Yamada.

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Nobel Prize in Chemistry 2019 awarded to developers of Li-ion battery

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Stanley Whittingham, Binghamton University, State University of New York; and Akira Yoshino, Asahi Kasei Corporation, for the development of lithium-ion batteries. The foundation of the lithium-ion battery was laid during the oil crisis in the 1970s. This resulted in a battery that literally had great potential, just over two volts.

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