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PNNL team pinpoints cause of dendrites and whiskers in lithium batteries; ethylene carbonate a culprit

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Dendrites and whiskers are holding back the widespread use of lithium metal batteries, which have higher energy density than their commonly used lithium-ion counterparts. Further, the scientists pinpointed a culprit in the growth process: ethylene carbonate, an indispensable solvent added to electrolyte to enhance battery performance.

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New conductive polymer addresses volumetric change issue with silicon anodes for Li-ion batteries; high-capacity and longer cycle life reported

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At left, a traditional approach combines Si (blue spheres) with a polymer binder (light brown) plus carbon (dark brown spheres). Repeated swelling and shrinking eventually breaks contacts among the conducting carbon particles. What’s needed is a flexible binder that can conduct electricity by itself, without the added carbon.

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Liquid microscopy technique reveals new problem with lithium-oxygen batteries; lithium peroxide in electrolyte

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One of the reasons for this loss of power is that a byproduct of the chemical reactions that take place inside the battery—lithium peroxide (Li 2 O 2 —builds up on the electrodes of the battery. The growth of Li 2 O 2 isolated in the electrolyte exhibits O 2 - diffusion-limited kinetics. —He et al.

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DOE issues $10M incubator FOA for batteries, power electronics, engines, materials, fuels and lubricants

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The VTO FOA is open to any and all ideas which significantly advance the mission of the VTO. ion batteries is approximately four times too high on a kWh basis; current batteries are two to three times too heavy and large, and high? ion batteries are not intrinsically tolerant to abusive conditions. energy batteries. durability).

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DOE seeking comment on draft $50M solicitation for new projects over 11 areas of interest to improve vehicle performance and decrease fuel consumption

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Advanced Electrolytes for Next-Generation Lithium Ion Chemistries. Joining dissimilar materials is a critical technical barrier to weight reduction of both civilian and military vehicles however breakthrough ideas for methods to produce these joints are lacking. Carbon Fiber Polymer Composite. Characteristics. units. . -30

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Probing the effect of CO2 on Li-air batteries

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A team of researchers in South Korea found that Li?air They suggested that the resulting mechanistic understanding of the chemistry of CO 2 in a Li–air cell and the interplay of CO 2 with electrolyte solvation will provide an important guideline for developing Li–air batteries. To develop a Li?“air” Earlier post.).

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A More Detailed Look at a Prismatic Li-ion Cell and Pack Manufacturing Process

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EnerDel believes its Hague Road plant is the first, and as yet at this time only, plant capable of achieving high volume production of transportation-grade, lithium ion cells within the US. The lithium-ion version of the THINK vehicle will have 384 cells in its 25 kWh battery pack and a range of more than 100 miles. x Li + + xe - + 6C.

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