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@ARTICLE{Mengesha:1025926,
author = {Mengesha, Tadesu Hailu and Jeyakumar, Juliya and Hendri,
Yola Bertilsya and Wu, Yi-Shiuan and Yang, Chun-Chen and
Pham, Quoc-Thai and Chern, Chorng-Shyan and Brunklaus,
Gunther and Winter, Martin and Hwang, Bing Joe},
title = {{C}oncerted {E}ffect of {I}on- and {E}lectron-{C}onductive
{A}dditives on the {E}lectrochemical and {T}hermal
{P}erformances of the {L}i{N}i 0.8 {C}o 0.1 {M}n 0.1 {O} 2
{C}athode {M}aterial {S}ynthesized by a {T}aylor-{F}low
{R}eactor for {L}ithium-{I}on {B}atteries},
journal = {ACS applied materials $\&$ interfaces},
volume = {16},
number = {16},
issn = {1944-8244},
address = {Washington, DC},
publisher = {Soc.},
reportid = {FZJ-2024-03204},
pages = {21034–21049},
year = {2024},
abstract = {To address the issue that a single coating agent cannot
simultaneously enhance Li+-ion transport and electronic
conductivity of Ni-rich cathode materials with surface
modification, in the present study, we first successfully
synthesized a LiNi0.8Co0.1Mn0.1O2 (NCM811) cathode material
by a Taylor-flow reactor followed by surface coating with
Li-BTJ and dispersion of vapor-grown carbon fibers treated
with polydopamine (PDA-VGCF) filler in the composite slurry.
The Li-BTJ hybrid oligomer coating can suppress side
reactions and enhance ionic conductivity, and the PDA-VGCFs
filler can increase electronic conductivity. As a result of
the synergistic effect of the dual conducting agents, the
cells based on the modified NCM811 electrodes deliver
superior cycling stability and rate capability, as compared
to the bare NCM811 electrode. The CR2032 coin-type cells
with the NCM811@Li-BTJ + PDA-VGCF electrode retain a
discharge specific capacity of $∼92.2\%$ at 1C after 200
cycles between 2.8 and 4.3 V (vs Li/Li+), while bare NCM811
retains only $84.0\%.$ Moreover, the NCM811@Li-BTJ +
PDA-VGCF electrode-based cells reduced the total heat (Qt)
by ca. $7.0\%$ at 35 °C over the bare electrode.
Remarkably, the Li-BTJ hybrid oligomer coating on the
surface of the NCM811 active particles acts as an artificial
cathode electrolyte interphase (ACEI) layer, mitigating
irreversible surface phase transformation of the layered
NCM811 cathode and facilitating Li+ ion transport.
Meanwhile, the fiber-shaped PDA-VGCF filler significantly
reduced microcrack propagation during cycling and promoted
the electronic conductance of the NCM811-based electrode.
Generally, enlightened with the current experimental
findings, the concerted ion and electron conductive agents
significantly enhanced the Ni-rich cathode-based cell
performance, which is a promising strategy to apply to other
Ni-rich cathode materials for lithium-ion batteries.},
cin = {IEK-12},
ddc = {600},
cid = {I:(DE-Juel1)IEK-12-20141217},
pnm = {1221 - Fundamentals and Materials (POF4-122) / LiBEST2 -
Lithium-Batterie-Konzepte mit hoher Energiedichte, Leistung
und Sicherheit (13XP0304A)},
pid = {G:(DE-HGF)POF4-1221 / G:(BMBF)13XP0304A},
typ = {PUB:(DE-HGF)16},
pubmed = {38606845},
UT = {WOS:001203989600001},
doi = {10.1021/acsami.3c19386},
url = {https://juser.fz-juelich.de/record/1025926},
}