Ultrathin coatings on nano-LiCoO2 for Li-ion vehicular applications

Isaac D. Scott, Yoon Seok Jung, Andrew S. Cavanagh, Yanfa Yan, Anne C. Dillon, Steven M. George, Se Hee Lee

Research output: Contribution to journalArticle

287 Citations (Scopus)

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 Al 2O3 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.

Original languageEnglish
Pages (from-to)414-418
Number of pages5
JournalNano letters
Volume11
Issue number2
DOIs
Publication statusPublished - 2011 Feb 9

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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    Scott, I. D., Jung, Y. S., Cavanagh, A. S., Yan, Y., Dillon, A. C., George, S. M., & Lee, S. H. (2011). Ultrathin coatings on nano-LiCoO2 for Li-ion vehicular applications. Nano letters, 11(2), 414-418. https://doi.org/10.1021/nl1030198