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@ARTICLE{Wandt:848381,
author = {Wandt, Johannes and Jakes, Peter and Granwehr, Josef and
Eichel, Rüdiger-A. and Gasteiger, Hubert A.},
title = {{Q}uantitative and time-resolved detection of lithium
plating on graphite anodes in lithium ion batteries},
journal = {Materials today},
volume = {21},
number = {3},
issn = {1369-7021},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2018-03622},
pages = {231 - 240},
year = {2018},
abstract = {The ability of fast and safe charging is critical for the
further success of lithium ion batteries in automotive
applications. In state-of-the-art lithium ion batteries, the
charging rate is limited by the onset of lithium plating on
the graphite anode. Despite its high importance, so far no
analytical technique has been available for directly
measuring lithium plating during battery charge. Herein, we
introduce operando electron paramagnetic resonance (EPR)
spectroscopy as the first technique capable of time-resolved
and quantitative detection of lithium metal plating in
lithium ion batteries. In an exemplary study, the C-rate
dependence of lithium metal plating during low-temperature
charging at −20 °C is investigated. It is possible to
quantify the amount of ‘dead lithium’ and observe the
chemical reintercalation of plated lithium metal. In this
way, it is possible to deconvolute the coulombic
inefficiency of the lithium plating/stripping process and
quantify the contributions of both dead lithium and active
lithium loss due to solid electrolyte interphase (SEI)
formation. The time-resolved and quantitative information
accessible with operando EPR spectroscopy will be very
useful for the optimization of fast charging procedures,
testing of electrolyte additives, and model validation.},
cin = {IEK-9},
ddc = {600},
cid = {I:(DE-Juel1)IEK-9-20110218},
pnm = {131 - Electrochemical Storage (POF3-131)},
pid = {G:(DE-HGF)POF3-131},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000430654600017},
doi = {10.1016/j.mattod.2017.11.001},
url = {https://juser.fz-juelich.de/record/848381},
}