ACS Nano,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 20, 2025
Developing
cost-effective
high-voltage
Ni-rich
cathodes
has
reached
a
consensus
to
replace
conventional
ultrahigh
Ni
counterparts
for
high-energy
Li-ion
batteries,
but
more
rigorous
requirements
are
put
forward
their
mechanical
and
chemical
stability.
Herein,
we
report
the
design
synthesis
of
full
concentration
gradient
LiNi0.75Mn0.20Co0.05O2
cathode
with
Mn-rich
Ni-poor
surface,
which
been
realized
by
in
situ
forming
PO43-
distribution
retard
transition-metal
ions'
interdiffusion
during
high-temperature
lithiation
process.
This
mitigates
stress
at
source
high
morphological
integrity
refrains
lattice
oxygen
loss
under
4.5
V
operation.
After
Li0.1B0.967PO4
is
coated,
surface
parasitic
reactions
further
ameliorated
stable
interface
chemistry.
The
resultant
deliver
reversible
capacity
as
212.6
mAh
g-1
2.7-4.5
an
energy
density
>800
Wh
kg-1cathode,
almost
equivalent
state-of-the-art
Ni-content
90%
2.7-4.3
V.
In
commercial-grade
cells,
superior
cycle
life
80.5%
retention
achieved
1C
within
after
1700
cycles,
exhibiting
promising
opportunities
compositional
cathodes.
Inorganic Chemistry,
Journal Year:
2024,
Volume and Issue:
63(22), P. 10324 - 10334
Published: May 21, 2024
Conductive
metal–organic
frameworks
(cMOFs),
as
a
kind
of
porous
material,
are
considered
to
be
highly
promising
materials
in
the
field
electrochemistry
due
their
excellent
conductivity.
However,
low
specific
capacitance
pure
cMOFs,
application
supercapacitors
is
limited.
By
virtue
high
theoretical
capacity
and
chemical
stability
Co-based
compounds,
this
work,
cMOFs'
M-HHTP
(M
=
Ni,
Co,
NiCo,
HHTP
2,3,6,7,10,11-hexahydroxytriphenylene)
grown
situ
on
Co(OH)2,
CoP,
Co3O4
nanosheets,
resulting
series
electroactive
compounds
electrode
used
supercapacitors.
Among
all
Ni-HHTP@Co(OH)2
shows
most
energy
storage
performance
outstanding
cyclic
aqueous
asymmetric
Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 17, 2025
Abstract
Lithium‐ion
batteries
(LIBs)
have
been
widely
adopted
in
the
automotive
industry,
with
an
annual
global
production
exceeding
1000
GWh.
Despite
their
success,
escalating
demand
for
LIBs
has
created
concerns
on
supply
chain
issues
related
to
key
elements,
such
as
lithium,
cobalt,
and
nickel.
Sodium‐ion
(SIBs)
are
emerging
a
promising
alternative
due
high
abundance
low
cost
of
sodium
other
raw
materials.
Nevertheless,
commercialization
SIBs,
particularly
grid
storage
applications,
faces
significant
hurdles.
This
perspective
article
aims
identify
critical
challenges
making
SIBs
viable
from
both
chemical
techno‐economic
perspectives.
First,
brief
comparison
materials
chemistry,
working
mechanisms,
between
mainstream
LIB
systems
prospective
SIB
is
provided.
The
intrinsic
regarding
stability,
capacity
utilization,
cycle
calendar
life,
safe
operation
cathode,
electrolyte,
anode
discussed.
Furthermore,
scalability
material
production,
engineering
feasibility,
energy‐dense
electrode
design
fabrication
illustrated.
Finally,
pathways
listed
discussed
toward
achieving
high‐energy‐density,
stable,
cost‐effective
SIBs.
Advanced Energy Materials,
Journal Year:
2023,
Volume and Issue:
14(3)
Published: Nov. 29, 2023
Abstract
Layered
oxide
cathodes
with
a
high‐nickel
(Ni
≥
0.9)
content
exhibit
great
potential
for
enabling
high‐energy‐density
lithium‐ion
batteries.
However,
their
practical
feasibility
and
cycle
life
are
hampered
by
severe
surface
reactivity
the
electrolyte.
A
LiNi
0.90
Co
0.05
Al
O
2
cathode
is
presented
enriched
on
(S‐NCA)
benchmark
it
against
obtained
conventional
co‐precipitation
method
that
has
uniform
distribution
throughout
bulk
(B‐NCA).
The
S‐NCA
greatly
outperform
an
impressive
capacity
retention
of
84%
after
1000
cycles
in
pouch
full
cells
graphite
anode
compared
to
62%
B‐NCA.
Advanced
characterization
methodologies,
including
time‐of‐flight
secondary‐ion
mass
spectrometry,
reveal
Al‐enriched
morphology
facilitates
formation
robust,
thin
electrode‐electrolyte
interphase
(EEI),
effectively
suppressing
oxidative
decomposition
electrolyte,
gas
generation,
metallic
dead
lithium
anode.
results
illustrate
electrolyte
primary
factor
limiting
high‐Ni
cathodes.
work
provides
valuable
insights
toward
viability
ultrahigh‐Ni
