4.8 Article

Ultrathin Direct Atomic Layer Deposition on Composite Electrodes for Highly Durable and Safe Li-Ion Batteries

Journal

ADVANCED MATERIALS
Volume 22, Issue 19, Pages 2172-+

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.200903951

Keywords

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Funding

  1. DOE SBIR
  2. MINT DARPA Center at the University of Colorado
  3. Korea Research Foundation [KRF-2008-357-D00066]
  4. U.S. Department of Energy through DOE Office of Energy Efficiency and Renewable Energy Office [DE-AC36-08G028308]
  5. Office of FreedomCar and Vehicle Technologies of the U.S. Department of Energy
  6. National Research Foundation of Korea [2008-357-D00066] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)

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Direct atomic layer deposition (ALD) on composite electrodes leads to ultrathin conformal protective coatings without disrupting inter-particle electronic pathways. Al2O3-coated natural graphite (NG) electrodes obtained by direct ALD on the as-formed electrode show exceptionally durable capacity retention even at an elevated temperature of 50 degrees C. In sharp contrast, ALD on powder results in poorer cycle retention than bare NC.

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