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@ARTICLE{He:808780,
author = {He, Xin and Wang, Jun and Wang, Rui and Qiu, Bao and
Frielinghaus, Henrich and Niehoff, Philip and Liu, Haidong
and Stan, Marian Cristian and Paillard, Elie and Winter,
Martin and Li, Jie},
title = {{A} 3{D} porous {L}i-rich cathode material with an in situ
modified surface for high performance lithium ion batteries
with reduced voltage decay},
journal = {Journal of materials chemistry / A},
volume = {4},
number = {19},
issn = {2050-7496},
address = {London {[u.a.]},
publisher = {RSC},
reportid = {FZJ-2016-02396},
pages = {7230-7237},
year = {2016},
abstract = {High crystallinity Li-rich porous materials integrated with
an in situ formed surface containing carbonaceous compounds
are synthesized through a facile approach. The rationally
designed procedure involves the formation of a specific
morphology of a hydroxide precursor assisted by a self-made
template and subsequent high temperature treatment to obtain
a Li1.2Mn0.56Ni0.16Co0.08O2 target product. The porous
morphology is investigated using field-emission scanning
electron microscopy and its surface area is quantitatively
examined by gas sorption analysis coupled with the
Brunauer–Emmett–Teller method. The crystallinity is
characterized by X-ray diffraction and high-resolution
transmission electron microscopy. X-ray photoelectron
spectroscopy, CHN elemental analysis and small angle neutron
scattering confirm the presence of carbonaceous compounds in
the surface composition. The prepared material exhibits
superior discharge rate capability and excellent cycling
stability. It shows minor capacity loss after 100 cycles at
0.5C and retains $94.9\%$ of its initial capacity after 500
cycles at 2C. Even more notably, the “voltage decay”
during cycling is also significantly decreased. It has been
found that carbonaceous compounds play a critical role in
reducing the layered to spinel structural transformation
during cycling. Therefore, the present porous Li-rich
material with surface modified carbonaceous compounds
represents an attractive material for advanced lithium-ion
batteries.},
cin = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
(München) ; JCNS-FRM-II / Neutronenstreuung ; JCNS-1 /
IEK-12},
ddc = {540},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
I:(DE-Juel1)JCNS-1-20110106 / I:(DE-Juel1)IEK-12-20141217},
pnm = {131 - Electrochemical Storage (POF3-131) / 144 -
Controlling Collective States (POF3-144) / 6213 - Materials
and Processes for Energy and Transport Technologies
(POF3-621) / 6G15 - FRM II / MLZ (POF3-6G15) / 6G4 - Jülich
Centre for Neutron Research (JCNS) (POF3-623)},
pid = {G:(DE-HGF)POF3-131 / G:(DE-HGF)POF3-144 /
G:(DE-HGF)POF3-6213 / G:(DE-HGF)POF3-6G15 /
G:(DE-HGF)POF3-6G4},
experiment = {EXP:(DE-MLZ)KWS1-20140101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000376035300018},
doi = {10.1039/C6TA01448H},
url = {https://juser.fz-juelich.de/record/808780},
}