Ultrathin Coatings on Nano-LiCoO2for Li-Ion Vehicular Applications

Scott, Isaac D. and Jung, Yoon Seok and Cavanagh, Andrew S. and Yan, Yanfa and Dillon, Anne C. and George, Steven M. and Lee, Se-Hee. (2011) Ultrathin Coatings on Nano-LiCoO2for Li-Ion Vehicular Applications. Nano Letters, 11 (2). p. 414. ISSN 1530-6984

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To deploy Li-ion batteries in next-generation vehicles, it is essential to develop electrodes with durability, high energy density, and high power. Here we report a breakthrough in controlled full-electrode nanoscale coatings that enables nanosized materials to cycle with durable high energy and remarkable rate performance. The nanoparticle electrodes are coated with Al2O3 using atomic layer deposition (ALD). The coated nano-LiCoO2 electrodes with 2 ALD cycles deliver a discharge capacity of 133 mAh/g with currents of 1400 mA/g (7.8C), corresponding to a 250% improvement in reversible capacity compared to bare nanoparticles (br-nLCO), when cycled at this high rate. The simple ALD process is broadly applicable and provides new opportunities for the battery industry to design other novel nanostructured electrodes that are highly durable even while cycling at high rate. Keywords (keywords): Atomic layer deposition; LiCoO2; rate performance; Li-ion battery; capacity fade; nanotechnology

Item Type: Article
InterNano Taxonomy: Areas of Application > Energy and Utilities
Areas of Application > Electronics and Semiconductor Industries
Collections: Nanomanufacturing Research Collection
Depositing User: Amulya Gullapalli
Date Deposited: 13 Jul 2011 01:56
Last Modified: 13 Jul 2011 01:56
URI: http://eprints.internano.org/id/eprint/628

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