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DOE researchers suggest solid-state batteries may not be a safety slam-dunk; thermodynamic models evaluate solid-state and Li-ion safety

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Recent battery fires have renewed investigation of the safety of Li-ion batteries. While the safety benefits of this solid electrolyte replacement are widely acknowledged, the broader safety of Li-metal anode solid-state batteries with high energy density has not been critically examined. A paper on their work appears in Joule.

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Researchers develop soft co-crystalline solid electrolyte for lithium-ion batteries

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Crystal structure of soft solid co-crystalline (Adpn) 2 LiPF 6 electrolyte a, Representation of the basic structural unit of (Adpn) 2 LiPF 6 showing tetra-coordinated Liions with four Adpn molecules, each shared with a second symmetry-equivalent Li atom; PF 6⁻ anions occupy the available interstitial pocket in the crystal structure.

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Researchers demonstrate high-capacity Mn-rich Li-ion cathodes; a design pathway away from cobalt and nickel

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Researchers led by a team at UC Berkeley have demonstrated high-capacity manganese-rich cathodes for advanced lithium-ion batteries. Low cost and low toxicity make the Mn 2+ /Mn 4+ couple particularly desirable for designing high-performance Li-ion batteries that are also inexpensive and eco-friendly. … V, 20 mA g ?

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Researchers in Belgium develop new class of solid composite electrolytes for Li-ion batteries: Eutectogels

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Researchers at Hasselt University in Belgium are proposing a new class of solid composite electrolytes (SCEs) for Li-ion batteries: deep eutectic solvent (DES)–silica composites. Structural schematic of a Li/LFP cell with the ETG as electrolyte. V versus Li, and unable to stop the growth of lithium dendrites. 7b03736.

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Study shows paper-folding concepts can compact a Li-ion battery and increase its areal energy density

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Researchers at Arizona State University have shown that paper-folding concepts can be applied to Li-ion batteries in order to realize a device with higher areal energy densities. These initial results showed that the Li-ion batteries can still exhibit good electrochemical performance even after multiple folds, they said.

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Volkswagen reveals ID. AERO concept; foretaste of brand’s first global electric sedan

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AERO concept electric sedan in China as a foretaste of the brand’s first global fully-electric sedan. The concept vehicle is almost five meters long and was designed based on aerodynamic principles. AERO Li-ion battery has a net energy content of 77 kWh. Volkswagen revealed the ID. Following the ID.4,

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OXIS Energy to supply solid-state Li-S batteries for trials and testing by this fall; 600 Wh/kg and 900 Wh/L by 2026

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OXIS has been collaborating with European manufacturers on the development of solid-state Li-S technology for almost 4 years. With an identical manufacturing process to conventional Li-S and Li-ion, the delivery of the Quasi Solid-State batteries is achievable by late Autumn 2021, the company claims.

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