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Jung, Yoon Seok
Electrochemical Solid-State Energy Storage Lab
Research Interests
  • Batteries, All-solid-state batteries, solid electrolytes, electrodes, atomic layer deposition,energy storage devices

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Ultrathin Coatings on Nano-LiCoO2 for Li-Ion Vehicular Applications

Cited 119 times inthomson ciCited 142 times inthomson ci
Title
Ultrathin Coatings on Nano-LiCoO2 for Li-Ion Vehicular Applications
Author
Scott, Isaac D.Jung, Yoon SeokCavanagh, Andrew S.An, YanfaDillon, Anne C.George, Steven M.Lee, Se-Hee
Keywords
Atomic layer deposition; LiCoO2; rate performance; Li-ion battery; capacity fade; nanotechnology
Issue Date
2011-02
Publisher
AMER CHEMICAL SOC
Citation
NANO LETTERS, v.11, no.2, pp.414 - 418
Abstract
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 highly durable even while cycling at high rate.
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DOI
10.1021/nl1030198
ISSN
1530-6984
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ECHE_Journal Papers
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