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Cited by 264

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Aging Analysis of Graphite/LiNi1/3Mn1/3Co1/3O2Cells Using XRD, PGAA, and AC Impedance

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Buchberger, Irmgard, Seidlmayer, Stefan, Pokharel, Aneil, Piana, Michele, Hattendorff, Johannes, Kudejova, Petra, Gilles, Ralph, Gasteiger, Hubert A.·2015·Journal of The Electrochemical Society

Abstract

The performance degradation of graphite/LiNi 1/3 Mn 1/3 Co 1/3 O 2 (NMC) lithium ion cells, charged and discharged up to 300 cycles at different operating conditions of temperature and upper cutoff potential (4.2V/25°C, 4.2V/60°C, 4.6V/25°C) was investigated. A combination of electrochemical methods with X-ray diffraction (XRD) both in situ and ex situ as well as neutron induced Prompt-Gamma-Activation-Analysis (PGAA) allowed us to elucidate the main failure mechanisms of the investigated lithium ion cells. In situ XRD investigations of the NMC material revealed that the first cycle irreversible capacity is the cause of slow lithium diffusion kinetics. In full-cells, however, this "lost" lithium ions can be used to build up the SEI of the graphite electrode during the initial formation cycle. A new systematic approach to correlate the lithium content in NMC with its lattice parameters ( c , a ) allows a convenient quantification of the loss of active lithium in aged cells by determining the c / a ratio of harvested NMC cathodes in the discharged state using ex situ XRD. Besides loss of active lithium, transition metal dissolution/deposition on graphite and growth of cell impedance strongly effect cell aging, especially at elevated temperatures and high upper cutoff potentials.

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Metadata

Authors
Buchberger, I., Seidlmayer, S., Pokharel, A., Piana, M., Hattendorff, J., Kudejova, P., Gilles, R., & Gasteiger, H. A.
Venue
Journal of The Electrochemical Society
Published
2015
Volume
162
Issue
14
Pages
A2737-A2746
ISSN
  • 0013-4651 (ISSN-L)
  • 1945-7111
OpenAlex
W2221761853
Cited by
264
References
46
FWCI
24.24
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: Aging Analysis of Graphite/LiNi1/3Mn1/3Co1/3O2Cells Using XRD, PGAA, and AC Impedance. https://app.cochat.ai/papers/10.1149/2.0721514jes
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Buchberger, I., Seidlmayer, S., Pokharel, A., Piana, M., Hattendorff, J., Kudejova, P., Gilles, R., & Gasteiger, H. A. (2015). Aging Analysis of Graphite/LiNi1/3Mn1/3Co1/3O2Cells Using XRD, PGAA, and AC Impedance. Journal of The Electrochemical Society. https://doi.org/10.1149/2.0721514jes

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