10.1016/j.jpowsour.2019.01.083
https://zenodo.org/records/2642479
oai:zenodo.org:2642479
Li, Dongjiang
Dongjiang
Li
Forschungszentrum Jülich, Fundamental Electrochemistry (IEK-9), D-52425 Jülich, Germany
Li, Hu
Hu
Li
Forschungszentrum Jülich, Fundamental Electrochemistry (IEK-9), D-52425 Jülich, Germany
Danilov, Dmitri
Dmitri
Danilov
Forschungszentrum Jülich, Fundamental Electrochemistry (IEK-9), D-52425 Jülich, Germany
Gao, Lu
Lu
Gao
Forschungszentrum Jülich, Fundamental Electrochemistry (IEK-9), D-52425 Jülich, Germany
Chen, Xiaoxuan
Xiaoxuan
Chen
Forschungszentrum Jülich, Fundamental Electrochemistry (IEK-9), D-52425 Jülich, Germany
Zhang, Zhongru
Zhongru
Zhang
Forschungszentrum Jülich, Fundamental Electrochemistry (IEK-9), D-52425 Jülich, Germany
Zhou, Jiang
Jiang
Zhou
Forschungszentrum Jülich, Fundamental Electrochemistry (IEK-9), D-52425 Jülich, Germany
Eichel, Rüdiger-A.
Rüdiger-A.
Eichel
Forschungszentrum Jülich, Fundamental Electrochemistry (IEK-9), D-52425 Jülich, Germany
Yang, Yong
Yong
Yang
Forschungszentrum Jülich, Fundamental Electrochemistry (IEK-9), D-52425 Jülich, Germany
Notten, Peter H. L.
Peter H. L.
Notten
Forschungszentrum Jülich, Fundamental Electrochemistry (IEK-9), D-52425 Jülich, Germany
Degradation Mechanisms of C6/LiNi0.5Mn0.3Co0.2O2 Li-ion Batteries Unraveled by Non-destructive and Post-mortem Methods
Zenodo
2019
Li-ion battery; Solid-electrolyte-interphase; Irreversible capacity loss; Electromotive force; Electrode degradation;
2019-02-15
https://zenodo.org/communities/eu
Creative Commons Attribution 4.0 International
The ageing mechanisms of C6/LiNi0.5Mn0.3Co0.2O2 batteries at various discharging currents and temperatures
have systematically been investigated with electrochemical and post-mortem analyses. The irreversible capacity
losses (ΔQir) at various ageing conditions are calculated on the basis of regularly determined electromotive force
(EMF) curves. Two stages can be distinguished for the degradation of the storage capacity at 30 °C. The first stage
includes SEI formation, cathode dissolution, etc. The second stage is related to battery polarization. The various
degradation mechanisms of the individual electrodes have been distinguished by dVEMF/dQ vs Qout and dVEMF/dQ
vs V plots. The Solid-Electrolyte-Interface (SEI) formation as well as the electrode degradation has been experimentally
confirmed by XPS analyses. Both Ni and Mn elements are detected at the anode while Co is absent,
indicating that the bonding of Co atoms is more robust in the cathode host structure. A Cathode-Electrolyte-
Interface (CEI) layer is also detected at the cathode surface. The composition of the CEI layer includes Li salts,
such as LiF, LiCOOR, as well as transition metal compounds like NiF2. Cathode dissolution is considered to be
responsible for both the NiF2 detected at the cathode and Ni at the anode.
European Commission
10.13039/501100000780
769900
DEsign and MOdelling for improved BAttery Safety and Efficiency