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ORNL, XALT show nanoscale alumina coating on layered oxide cathode materials substantially improves Li-ion battery performance

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The ability to mitigate degradation mechanisms for Ni-rich NMC and NCA provides insight into a method to enable the performance of high-voltage Li-ion batteries, they concluded. —Mohanty et al. UCV, respectively.

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New aqueous rechargeable lithium battery shows good safety, high reliability, high energy density and low cost; another post Li-ion alternative

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Schematic illustration of the aqueous rechargeable lithium battery (ARLB) using the coated lithium metal as anode, LiMn 2 O 4 as cathode and 0.5 mol l -1 Li 2 SO 4 aqueous solution as electrolyte. mol l -1 Li 2 SO 4 aqueous solution as electrolyte, an ARLB is built up. Wang et al. Click to enlarge. —Wang et al.

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Dalhousie team reports ternary blends of electrolyte additives greatly enhance performance of NMC Li-ion cells

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Batteries for electrified vehicles require much longer calendar and cycle lifetimes, as well as improved high temperature tolerance, than their portable consumer electronics counterparts. Researchers at Dalhousie University (Canada) led by Dr. Jeff Dahn now report that Li[Ni 1/3 Mn 1/3 Co 1/3 ]O 2 (NMC111)/graphite and Li[Ni 0.42

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Ultrathin LiMn2O4 Nanowire Cathode Materials for Higher Li-ion Power Densities for HEV and EV Applications

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A team of researchers from the Korea Advanced Institute of Science and Technology, Università degli Studi di Milano-Bicocca (Italy), and Stanford University have synthesized ultrathin LiMn 2 O 4 nanowires for use as a Li-ion cathode material offering high power densities. Article ASAP doi: 10.1021/nl101047f.

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Researchers Seek to Enhance Commercial Potential for Aluminum-Air Cell by Modeling Effects of Parasitic Hydrogen Evolution

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The Aluminum-air battery, a metal-air battery system which uses a catalytic air cathode in combination with an electrolyte and an aluminum anode, offers a theoretical specific energy of 8.1 kWh/kg of Al—second only to the Li-air battery (13.0 Energy Fuels , Article ASAP doi: 10.1021/ef901344k. Earlier post.)

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New direct borohydride fuel cell increases peak power density by factor of 1.7–3.7

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Researchers at Xi’an Jiaotong University in China have developed a new direct borohydride fuel cell (DBFC) that shows a peak power density of 663 mW·cm -2 at 65 °C (149 °F)—an increase in power density by a factor of 1.7 Xiaodong Yang, Yongning Liu, Sai Li, Xiaozhu Wei, Li Wang & Yuanzhen Chen (2012).

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Sealed Silicon Nanowire Arrays as Li-ion Anode Material Show Structural Stability Under Cycling

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As has been noted many times, silicon is a promising candidate for electrodes in lithium ion batteries due to its large theoretical energy density of about 4,200 mAhg -1 —10x higher than graphite (372 mAhg -1 )—and relatively low working potential (~0.5 V vs Li/Li + ). Article ASAP doi: 10.1021/nl100086e. Song et al.

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