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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. Researchers are working on ways to store more energy in the cathode materials by increasing nickel content. —Bi et al.

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New stable Fe3O4/C composite material for conversion electrode in solid-state Li-ion batteries

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Researchers in Europe, with colleagues from Samsung R&D Institute in Japan, have developed a highly stable Fe 3 O 4 /C composite for use as a conversion electrode in all-solid-state Li-ion batteries. In addition, recently a new chemistry has surfaced, allowing to store more Li + by the so-called conversion mechanism.

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UH, Toyota researchers develop new cathode and electrolyte for high-power Mg battery rivaling Li-ion

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Magnesium batteries have long been considered a potentially safer and less expensive alternative to lithium-ion batteries, but previous versions have been severely limited in the power they delivered. Magnesium ions hold twice the charge of lithium, while having a similar ionic radius. —Dong et al. Neither approach is practical.

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Simple process transforms PET plastic into a nanomaterial for supercapacitors

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When tested in the supercapacitor, the material contained the characteristics of both a double-layer capacitor formed by the arrangement of separated ionic and electronic charges, as well as redox reaction pseudo-capacitance that occurs when the ions are electrochemically absorbed onto surfaces of materials. —Professor Cengiz Ozkan.

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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). Earlier post.).

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AKASOL developing second-generation Li-ion battery systems for Mercedes-Benz’ eCitaro; 35% more energy in 2020

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AKASOL is also starting to develop second-generation lithium-ion battery systems in close cooperation with Daimler Buses. Being upwards compatible, these will offer about 35% more energy and contribute to an improved range in 2020. —AKASOL CEO Sven Schulz.

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Researchers report first direct observation of anionic redox in a lithium-rich battery material

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Conventional Li-ion batteries work by cationic redox, when a metal ion changes its oxidation state as lithium is inserted or removed. Within this insertion framework, only one lithium-ion can be stored per metal ion. Lithium-rich cathodes, however, can store much more. —Li et al.

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