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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. The estimated sodium storage up to C 6.9 100 to 150 mA h g ? 100 to 150 mA h g ?1

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MIT team develops data-driven safety envelope for lithium-ion batteries for EVs

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Researchers at MIT, with a colleague from Tsinghua University, have developed a safety envelope for Li-ion batteries in electric vehicles by using a high accuracy finite element model of a pouch cell to produce more than 2,500 simulations and subsequently analyzing the data with Machine Learning (ML) algorithms. —Li et al.

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Stanford, CMU, MIT team reviews challenges to practical implementation of solid-state Li-ion batteries

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Solid-state lithium-ion batteries, with higher volumetric energy densities than currently available lithium-ion batteries, offer a number of conceptual advantages including improved packaging efficiency; improved safety; and long cycle life. —Kermana et al.

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New Lithium-intercalated graphene materials good candidates for Li-ion battery applications

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Variation in discharge capacity vs. cycle number for graphite, RGO, and Li-RGO cycled at a current rate of 25 mA/g between 3.0 V vs Li/Li +. Cyclic voltammograms (CV) of the Li-RGO electrode demonstrated that lithium could reversibly intercalate and deintercalate into graphene sheets. Credit: ACS, Kumar et al.

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OSU smart membrane could enable new category of high-energy, high-power energy storage for EVs

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A team at the Ohio State University has developed a membrane that regulates bi-directional ion transport across it as a function of its redox state and that could be used as a programmable smart membrane separator in future supercapacitors and redox flow batteries. plugin EVs to Tesla’s 85 kWh battery pack).

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New sensor tech for commercial Lithium-ion batteries could support >5x faster charging without compromising safety

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Researchers at WMG at the University of Warwick (UK) have developed a method to assess the maximum current for commercial 18650 Li-ion batteries, using novel instrumentation methods enabling in operando measurements. Schematics of the FBG sensing element embedded into a Li-ion cylindrical cell. Amietszajew et al.

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Study suggests lithium and cobalt for batteries may face supply risks by 2050

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Lithium and cobalt are fundamental components of present lithium-ion batteries. The researchers present these results in the journal Nature Reviews Materials as part of a cost and resource analysis of sodium-ion batteries. … Estimated number of devices and related energy demand for 2016–2050. Vaalma et al. Click to enlarge.

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