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@ARTICLE{Kasnatscheew:828968,
author = {Kasnatscheew, Johannes and Evertz, Marco and Streipert,
Benjamin and Wagner, Ralf and Nowak, Sascha and Cekic
Laskovic, Isidora and Winter, Martin},
title = {{C}hanging {E}stablished {B}elief on {C}apacity {F}ade
{M}echanisms: {T}horough {I}nvestigation of {L}i{N}i
$_{1/3}$ {C}o $_{1/3}$ {M}n $_{1/3}$ {O} $_{2}$ ({NCM}111)
under {H}igh {V}oltage {C}onditions},
journal = {The journal of physical chemistry / C},
volume = {121},
number = {3},
issn = {1932-7455},
address = {Washington, DC},
publisher = {Soc.},
reportid = {FZJ-2017-02788},
pages = {1521 - 1529},
year = {2017},
abstract = {The further development of lithium ion batteries operating
at high voltages requires basic understanding of the
occurring capacity fade mechanisms. In this work, the
overall specific capacity loss with regard to reversible and
irreversible processes for LiNi1/3Co1/3Mn1/3O2 (NCM111)/Li
half cells, cycled at a charge cutoff potential of 4.6 V vs
Li/Li+, has been investigated in detail. By means of total
X-ray fluorescence (TXRF) technique it was shown that
specific capacity losses associated with the amount of
dissolved transition metals are negligible, implying a still
intact NCM111 active material after 53 cycles. It was
demonstrated that the specific capacity fade during cycling
at constant specific currents can be mainly attributed to
the increase of the delithiation (charge) hindrance, whereas
lithiation (discharge) hindrance is only present after a
specific current increase, leading to apparent specific
capacity losses and to decreased Coulombic efficiencies.
This could be proven by the determination of the NCM
lithiation degree in the discharged state with inductively
coupled plasma optical emission spectroscopy (ICP–OES).
Moreover, by decreasing the kinetic hindrance in the NCM
material, it was shown that most of the observed specific
capacity losses after 53 cycles are reversible. The
influence of the active material and the cathode electrolyte
interphase (CEI) on the specific capacity fade has been
discussed. The results of the X-ray photoelectron
spectroscopy (XPS) studies revealed that the CEI thickness
is predominately dependent on the applied temperature
(thermal-chemical origin) rather than the applied electrode
potential (electrochemical origin). Finally, the absence of
a fade in specific capacity for LiNi0.5Mn1.5O4 (LNMO) at an
even higher charge cutoff potential of 4.95 V vs Li/Li+
points to a strong active material dependence than solely to
the impact of electrolyte decomposition and CEI formation.},
cin = {IEK-12},
ddc = {540},
cid = {I:(DE-Juel1)IEK-12-20141217},
pnm = {131 - Electrochemical Storage (POF3-131)},
pid = {G:(DE-HGF)POF3-131},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000393008900018},
doi = {10.1021/acs.jpcc.6b11746},
url = {https://juser.fz-juelich.de/record/828968},
}