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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. Li whisker formation during electrochemical deposition of Li in a CO 2 environment. a–c, Sequential TEM snapshots of Li particle nucleation.

Li-ion 247
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Liquid microscopy technique reveals new problem with lithium-oxygen batteries; lithium peroxide in electrolyte

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During discharge, the nucleation of Li 2 O 2 is observed at the carbon electrode/electrolyte interface, and the following growth process exhibits Li + diffusion-limited kinetics. Li 2 O 2 at the carbon electrode surface and isolated in the electrolyte are both active upon charging and gradually decomposed. —He et al.

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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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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. energy lithium?ion 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? Carbon Fiber or Lightweight Materials. energy batteries. durability).

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Top 5 Electric Vehicle Start-Ups in India

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Startups have this innate potential to take up an idea and converting it into a viable business plan then scaling it into a massive success. The company also produces low-cost lithium-ion scooters, which they displayed at the Auto Expo 2020. Whenever the world is shaken by new technology, it is most probably by a start-up.

India 52
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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. 30 to +52. -30

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Must Read 40+ Electric Vehicle Interview Questions & Answers

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The growth potential of EVs is high and I would like to be a part of it by contributing my ideas and effort. Moreover, I’m concerned about the environment and eco-friendly transportation. Lithium-ion batteries are commonly used in EVs due to their high energy density. #3