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November 01, 2017 at 11:05AM
SLAC Uses Nobel Prize-Winning Technique To Investigate Battery Fires
An anonymous reader quotes an announcement from SLAC:
Scientists from Stanford University and the Department of Energy’s SLAC National Accelerator Laboratory have captured the first atomic-level images of finger-like growths called dendrites that can pierce the barrier between battery compartments and trigger short circuits or fires… This is the first study to examine the inner lives of batteries with cryo-electron microscopy, or cryo-EM, a technique whose ability to image delicate, flash-frozen proteins and other "biological machines" in atomic detail was honored with the 2017 Nobel Prize in chemistry… The ability to see this level of detail for the first time with cryo-EM will give scientists a powerful tool for understanding how batteries and their components work at the most fundamental level and for investigating why high-energy batteries used in laptops, cell phones, airplanes and electric cars sometimes fail, the researchers said… In cryo-EM, samples are flash-frozen by dipping them into liquid nitrogen, then sliced for examination under the microscope. You can freeze a whole coin-cell battery at a particular point in its charge-discharge cycle, remove the component you’re interested in and see what is happening inside that component at an atom-by-atom scale. You could even create a stop-action movie of battery activity by stringing together images made at different points in the cycle… Zooming in, they used a different technique to look at the way electrons bounced off the atoms in the dendrite, revealing the locations of individual atoms in both the crystal and its solid electrolyte interphase (SEI) coating. When they added a chemical commonly used to improve battery performance, the atomic structure of the SEI coating became more orderly, and they think this may help explain why the additive works.
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October 29, 2017 at 12:42PM
Enel S.p.A., through its U.S. subsidiary EnerNOC, has acquired eMotorWerks, supplier of ‘JuiceBox‘ charging stations. The acquisition marks Enel’s entrance into the U.S. electric mobility market. Enel has installed around 5,000 charging stations in Italy, Spain, Romania, Greece, Chile, Colombia and Argentina. Source: Enel
Panasonic is planning to simultaneously increase lithium ion (li-ion) battery production in Japan, U.S. and China. The investments in additional capacity at all three production bases could reach 100 billion yen ($879 million). In Japan, the company will begin producing automotive batteries at a liquid-crystal display plant in Hemeji, near Kobe, in FY19. An expansion is underway at a Dalian, China plant that is targeted to come online by the end of March. The U.S. Gigafactory, jointly operated in conjunction with Tesla could be expanded to increase capacity by as much as 50%. Source: Asia Nikkei Review
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Dutch researchers unveil li-ion battery capable of 50% more energy – pv magazine International
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