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@ARTICLE{Ryu:878034,
author = {Ryu, Hoon-Hee and Park, Nam-Yung and Seo, Jeong Hyun and
Yu, Young-Sang and Sharma, Monika and Mücke, Robert and
Kaghazchi, Payam and Yoon, Chong S. and Sun, Yang-Kook},
title = {{A} highly stabilized {N}i-rich {NCA} cathode for
high-energy lithium-ion batteries},
journal = {Materials today},
volume = {36},
issn = {1369-7021},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2020-02590},
pages = {73 - 82},
year = {2020},
abstract = {In this study, we have demonstrated that boron doping of
Ni-rich Li[NixCoyAl1−x−y]O2 dramatically alters the
microstructure of the material. Li[Ni0.885Co0.1Al0.015]O2 is
composed of large equiaxed primary particles, whereas a
boron-doped Li[Ni0.878Co0.097Al0.015B0.01]O2 cathode
consists of elongated particles that are highly oriented to
produce a strong, crystallographic texture. Boron reduces
the surface energy of the (0 0 3) planes, resulting in a
preferential growth mode that maximizes the (0 0 3)
facet. This microstructure modification greatly improves the
cycling stability; the Li[Ni0.878Co0.097Al0.015B0.01]O2
cathode maintains a remarkable $83\%$ of the initial
capacity after 1000 cycles even when it is cycled at $100\%$
depth of discharge. By contrast, the
Li[Ni0.885Co0.1Al0.015]O2 cathode retains only $49\%$ of its
initial capacity. The superior cycling stability clearly
indicates the importance of the particle microstructure
(i.e., particle size, particle shape, and crystallographic
orientation) in mitigating the abrupt internal strain caused
by phase transitions in the deeply charged state, which
occurs in all Ni-rich layered cathodes. Microstructure
engineering by surface energy modification, when combined
with protective coatings and composition modification, may
provide a long-sought method of harnessing the high capacity
of Ni-rich layered cathodes without sacrificing the cycling
stability.},
cin = {IEK-1},
ddc = {670},
cid = {I:(DE-Juel1)IEK-1-20101013},
pnm = {131 - Electrochemical Storage (POF3-131)},
pid = {G:(DE-HGF)POF3-131},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000540750100022},
doi = {10.1016/j.mattod.2020.01.019},
url = {https://juser.fz-juelich.de/record/878034},
}