Electrochemical characterization of voltage fade of Li1.2Ni0.2Mn0.6O2 cathode

Xiaofeng Zhang, Xiangbo Meng, Jeffrey W. Elam, Ilias Belharouak

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14 Citations (Scopus)

Abstract

Li- and Mn-rich composite cathodes, such as Li1.2Ni0.2Mn0.6O2 are attractive for electrified transportations. However, this type of materials suffers from a voltage decay during cycling, which makes it unpractical in real applications. For a better characterization and understanding of the voltage fade phenomenon, the average voltage and average quasi-OCP were measured to estimate the voltage decay rate. As a possible solution, atomic-layer-deposition (ALD) Al2O3 coatings were applied to the powder to stabilize the material's surface. The voltage fade of the ALD-coated sample was also evaluated.

Original languageEnglish
Pages (from-to)231-235
Number of pages5
JournalSolid State Ionics
Volume268
Issue numberPB
DOIs
Publication statusPublished - 15 Dec 2014
Externally publishedYes

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Keywords

  • Atomic layer deposition (ALD)
  • Layered-layered composite
  • Li-ion battery
  • Voltage fade

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Chemistry(all)

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