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PNNL team uncovers reaction mechanisms of Li-air batteries; how batteries blow bubbles

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Lithium-air batteries are looked to by many as a very high-energy density next-generation energy storage solution for electric vehicles. One reaction that hasn’t been fully explained is how oxygen blows bubbles inside a lithium-air battery when it discharges. The paper is published in the journal Nature Nanotechnology.

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Liox Power reports first operation of a Li-air battery with a straight-chain alkyl amide electrolyte solvent; new direction for Li-air research

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Researchers at startup Liox Power, a California-based company developing rechargeable Li-air batteries, have demonstrated for the first time the operation of a lithium-air battery with a Li anode in a straight-chain alkyl amide electrolyte solvent (N,N-dimethylacetamide (DMA)/lithium nitrate (LiNO 3 )).

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MIT, Toyota team clarifies role of iodide in Li-air batteries

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Lithium-air (or lithium-oxygen) batteries potentially could offer three times the gravimetric energy of current Li-ion batteries (3500 Wh/kg at the cell level); as such, they are looked to a potential solution for long-range EVs. However, the insulating nature of Li 2 O 2 brings further complications during the charge process.

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Cornell team offers prospect for more stable Li-air battery with ionomer SEIs

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Lithium-air (Li-O 2 ) batteries are among the nost energy-dense electrochemical platforms for mobile energy storage, and are thus considered promising for electrified transportation. the formation of a stable interphase with lithium, protecting the metal while promoting ion transport. —Choudhury et al. Zachman, Lena F.

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JĂĽlich, ORNL researchers advance high energy density iron-air batteries

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Using in-situ electrochemical atomic force microscopy ( in-situ EC-AFM) at the Center for Nanophase Materials Sciences at ORNL, they were able to observe how deposits of iron hydroxide particles (Fe(OH) 2 ) form at the iron electrode under conditions similar to those prevalent during charging and discharging. Weinrich Click to enlarge.

Energy 170
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EV Everywhere Blueprint outlines DOE technical and development goals for EVs for 2022

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In the near-term (2012-2017), DOE sees an opportunity to more than double the battery pack energy density from 100 Wh/kg to 250 Wh/kg through the use of new high-capacity cathode materials, higher voltage electrolytes, and the use of high capacity silicon or tin- based intermetallic alloys to replace graphite anodes. —Blueprint.

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