Molecules,
Journal Year:
2024,
Volume and Issue:
29(13), P. 2975 - 2975
Published: June 22, 2024
In
conventional
lithium-ion
batteries
(LIBs),
the
active
lithium
from
lithium-containing
cathode
is
consumed
by
formation
of
a
solid
electrolyte
interface
(SEI)
at
anode
during
first
charge,
resulting
in
irreversible
capacity
loss.
Prelithiation
additives
can
provide
additional
to
effectively
compensate
for
Lithium
oxalate
regarded
as
promising
ideal
prelithiation
agent;
however,
electrochemical
decomposition
challenging.
this
work,
hollow
and
porous
composite
microsphere
was
prepared
using
mixture
oxalate,
Ketjen
Black
transition
metal
oxide
catalyst,
formulation
optimized.
Owing
compositional
structural
merits,
voltage
reduced
3.93
V;
when
being
used
an
additive,
there
no
noticeable
side
effect
on
performance
material.
With
4.2%
such
discharge
LiFePO4‖graphite
full
cell
increases
139.1
151.9
mAh
g−1,
coulombic
efficiency
88.1%
96.3%;
it
also
facilitates
superior
SEI,
leading
enhanced
cycling
stability.
This
work
provides
optimized
formula
developing
efficient
agent
LIBs.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 16, 2025
Abstract
The
battery
formation
process
is
pivotal
for
constructing
a
solid
electrolyte
interphase
(SEI)
on
graphite
anodes,
generally
conducted
at
high
temperatures.
However,
the
resulting
excessive
SEI
film
causes
significant
lithium
loss
and
an
inferior
charging
rate.
Herein,
unconventional
low‐temperature
technology
based
innovative
temperature‐responsive
with
anion‐dominated
solvation
structure
low
temperature
validated.
During
cycling
5
°C,
enhanced
anion–cation
interaction,
coupled
suppressed
solvent
decomposition,
facilitates
generation
of
thin
fluoride‐rich
film.
Consequently,
anodes
exhibit
5C
fast‐charging
performance
(198.89
mAh
g
−1
,
53.39%
theoretical
capacity),
successfully
overcoming
rate
bottleneck
2C
commonly
encountered
in
commercial
realize
95.88%
capacity
retention
after
400
cycles
0.5C.
Moreover,
compared
to
traditional
high‐temperature
formation,
saves
52.73%
(from
22.02
10.42
h)
time
reduces
from
16.76%
7.21%.
This
work
highlights
importance
opportunities
utilizing
as
“driving
force”
regulating
interfacial
chemistry.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 9, 2024
Abstract
Polyolefin
separators,
such
as
polypropylene
(PP)
and
polyethylene
(PE)
are
the
commonly
used
separators
for
lithium
batteries,
which
have
good
mechanical
properties
chemical/electrochemical
stability,
but
their
high‐temperature
dimensional
stability
is
poor
Li
+
transference
number
(
t
)
low.
Recently,
much
attention
has
been
paid
to
developing
with
new
substrates,
so
far
there
no
separator
replace
polyolefin
large‐scale
application.
Therefore,
surface
modification
of
enhance
its
functionality
a
simple
effective
method.
Among
many
modified
layers,
porous
layer
can
store
electrolyte
provide
enough
space
ion
transport.
In
this
work,
hollow
mesoporous
silica
nanosphere
(mSiO
2
prepared
PP
multifunctional
coating
improve
electrochemical
performance
safety
separator.
The
experimental
theoretical
results
show
that
mSiO
not
only
wettability
separator,
also
promote
transport,
/PP
exhibits
high
ionic
conductivity
(2.35
mS
cm
−1
(0.63).
As
result,
Li//LiFePO
4
cells
using
exhibit
excellent
cycling
performance,
rate
safety.
Energy Material Advances,
Journal Year:
2024,
Volume and Issue:
5
Published: Jan. 1, 2024
As
the
world
enters
into
era
of
electrifying
transportation
for
cleaner
energy,
lithium-ion
battery
(LIB)-powered
electric
vehicles
have
drawn
great
attention
in
recent
years.
However,
fast-charging
capability
LIBs
has
long
been
regarded
as
technological
obstacle
to
wider
adoption
(BEVs)
market.
A
substantial
challenge
associated
with
fast
charging
is
formation
Li
plating
on
graphite
anode
it
major
contributor
side
reactions
during
cell
operations.
In
this
review,
fundamentals
and
corresponding
influencing
factors
(including
state
charge
[SOC],
current
density,
temperature,
N/P
ratio)
Li-ion
intercalation
process
are
first
elucidated
under
conditions.
Furthermore,
conventional
strategies
suppress
by
enhancing
ion
transport
kinetics
between
interface
electrode
through
engineering
electrolyte
design
also
summarized
analyzed.
Then,
innovative
achieving
ultrahigh
SOC
anodes
regulating
morphology
host
materials
construct
hybrid
storage
discussed
detail.
Two
types
compared
terms
performance,
simplicity,
safety
concerns.
Last,
we
highlight
some
research
orientations
perspectives
pertaining
development
storage,
providing
effective
approaches
address
issues
LIBs.
Advanced Energy Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 6, 2025
Abstract
Zn‐I
2
battery
with
four‐electron
reaction
path
(I
−
/I
+
)
in
the
cathode
delivers
high
energy
density,
which
however
is
thermodynamically
not
favored
as
I
metastable.
Herein,
it
demonstrated
that
conjugated
2P
valence
electrons
graphitic
framework
can
be
relocated,
offering
chances
to
stabilize
species.
Combinations
of
elements
(B,
N,
C,
O)
various
configurations
are
first
screened
computationally,
identifying
O─B─C─N
optimal
structure.
In
this
B‐centered
domain,
adjacent
O
and
meta‐positioned
owing
more
higher
electronegativity,
found
withdraw
from
surrounding
C
atoms
enrich
z
orbital
electron‐deficient
B
site
at
Fermi
level;
weak
electronically
enriched
tends
donate
reactants,
thus
also
enhance
adsorption
iodine
species
on
carbon
host.
Carbon
nanosheets
abundant
domains
developed
accordingly;
relevant
shows
a
large
capacity
420.3
mAh
g
−1
coulombic
efficiency
98.9%
under
0.8
A
;
moreover,
stand
for
9000
cycles
retention
88.8%.
This
computation‐guided
study
presents
how
interplay
2p‐elements
manipulated
pursue
an
efficient
host
novel
batteries.
EES batteries.,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
Using
advanced
analytical
methods
to
study
aging
in
lithium-sulfur
batteries
uncovers
key
degradation
mechanisms,
offering
insights
that
can
improve
durability,
safety,
and
overall
performance.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 2, 2025
Abstract
The
loss
of
active
lithium
during
the
initial
charge
process
significantly
reduces
both
energy
density
and
cycle
life
lithium‐ion
batteries.
Cathode
replenishment
is
a
promising
alternative
to
metal‐based
prelithiation;
however,
development
efficient
cathode
agents
remains
limited.
Organic
offer
advantages
over
inorganic
counterparts,
including
superior
air
stability,
abundant
resources,
minimal
solid
residue
after
oxidation,
providing
high
specific
capacity
comparable
metal
degassing.
Nevertheless,
there
need
for
diverse
effective
organic
agents.
Herein,
ketomalonate‐based
agents:
dilithium
ketomalonate
(DLMT)
tetralithium
(TLMT)
with
uniform
spherical
particles
≈1
µm
are
developed.
Both
DLMT
TLMT
demonstrate
capacities
excellent
compatibility
standard
battery
manufacturing
processes.
Their
complete
decomposition,
coupled
uniformly
distributed
pores,
preserves
structural
integrity
ensures
stable
electrochemical
performance.
Incorporating
these
into
cathodes
led
20.5%
improvement
in
retention
500
cycles
LFP||Gr
full
cells
increased
by
5.7%
7.2%
LMFP||Gr
cells.
design
novel
sacrificial
salts,
emphasizing
stability
efficiency,
underscores
their
potential
high‐performance
