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

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

Research output: Contribution to journalArticle

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

Fingerprint

Cathodes
cathodes
Electric potential
electric potential
Atomic layer deposition
atomic layer epitaxy
Powders
decay rates
coatings
Coatings
cycles
composite materials
Composite materials
decay
estimates

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)

Cite this

Electrochemical characterization of voltage fade of Li1.2Ni0.2Mn0.6O2 cathode. / Zhang, Xiaofeng; Meng, Xiangbo; Elam, Jeffrey W.; Belharouak, Ilias.

In: Solid State Ionics, Vol. 268, No. PB, 15.12.2014, p. 231-235.

Research output: Contribution to journalArticle

Zhang, Xiaofeng ; Meng, Xiangbo ; Elam, Jeffrey W. ; Belharouak, Ilias. / Electrochemical characterization of voltage fade of Li1.2Ni0.2Mn0.6O2 cathode. In: Solid State Ionics. 2014 ; Vol. 268, No. PB. pp. 231-235.
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