Effect of electrolyte additives in improving the cycle and calendar life of graphite/Li1.1[Ni1/3Co1/3Mn1/3]0.9O2 Li-ion cells

Jun Liu, Zonghai Chen, Sara Busking, Ilias Belharouak, Khalil Amine

Research output: Contribution to journalArticlepeer-review

49 Scopus citations

Abstract

Lithium-rich layered metal oxide Li1.1[Ni1/3Co1/3Mn1/3]0.9O2 was investigated as a potential positive electrode material for high-power batteries for hybrid electric vehicle (HEV) applications. In order to evaluate the power and life characteristics of the graphite/Li1.1[Ni1/3Co1/3Mn1/3]0.9O2 cell chemistry, hybrid pulse power characterization (HPPC) and accelerated calendar life tests were conducted on several pouch cells containing electrolytes with and without additives. The data show that the cells containing 0.5 wt% lithium bis(oxalate)borate (LiBOB) or vinyl ethyl carbonate (VEC) additives, or the novel lithium difluoro(oxalato)borate (LiDFOB) additive, have much improved cycle and calendar life performance.

Original languageEnglish
Pages (from-to)852-855
Number of pages4
JournalJournal of Power Sources
Volume174
Issue number2
DOIs
StatePublished - Dec 6 2007
Externally publishedYes

Funding

The authors acknowledge the financial support of the U.S. Department of Energy, FreedomCAR and Vehicle Technologies office and the Electron Microscopy Center at Argonne for support of SEM study of battery materials. The submitted manuscript has been created by UChicago Argonne, LLC, Operator of Argonne National Laboratory (“Argonne”). Argonne, a U.S. Department of Energy Office of Science laboratory, is operated under Contract No. DE-AC02-06CH11357. The U.S. Government retains for itself, and others acting on its behalf, a paid-up nonexclusive, irrevocable worldwide license in said article to reproduce, prepare derivative works, distribute copies to the public, and perform publicly and display publicly, by or on behalf of the Government.

Keywords

  • Additive
  • Calendar life
  • Cycle life
  • HEV
  • Li-ion battery

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