Abstract
Composite
polymer‐ceramic
electrolytes
have
shown
considerable
potential
for
high‐energy‐density
Li‐metal
batteries
as
they
combine
the
benefits
of
both
polymers
and
ceramics.
However,
low
ionic
conductivity
poor
contact
with
electrodes
limit
their
practical
usage.
In
this
study,
a
highly
conductive
stable
composite
electrolyte
high
ceramic
loading
is
developed
batteries.
The
electrolyte,
produced
through
in
situ
polymerization
composed
polymer
called
poly‐1,3‐dioxolane
poly(vinylidene
fluoride)/ceramic
matrix,
exhibits
excellent
room‐temperature
1.2
mS
cm
−1
stability
Li
metal
over
1500
h.
When
tested
Li|electrolyte|LiFePO
4
battery,
delivers
cycling
performance
rate
capability
at
room
temperature,
discharge
capacity
137
mAh
g
500
cycles
1
C.
Furthermore,
not
only
+
transference
number
0.76
but
also
significantly
lowers
resistance
(from
157.8
to
2.1
Ω)
relative
electrodes.
used
battery
high‐voltage
LiNi
0.8
Mn
0.1
Co
O
2
cathode,
140
achieved.
These
results
show
solid‐state
provide
strategy
designing
polymer‐in‐ceramic
electrode‐compatible
interfaces.
Journal of The Electrochemical Society,
Год журнала:
2023,
Номер
170(3), С. 030502 - 030502
Опубликована: Фев. 16, 2023
Electrochemical
impedance
spectroscopy
(EIS)
is
used
widely
in
electrochemistry.
Obtaining
EIS
data
simple
with
modern
electrochemical
workstations.
Yet,
analyzing
spectra
still
a
considerable
quandary.
The
distribution
of
relaxation
times
(DRT)
has
emerged
as
solution
to
this
challenge.
However,
DRT
deconvolution
underlies
an
ill-posed
optimization
problem,
often
solved
by
ridge
regression,
whose
accuracy
strongly
depends
on
the
regularization
level
λ.
This
article
studies
selection
$?>
using
several
cross-validation
(CV)
methods
and
L-curve
approach.
A
hierarchical
Bayesian
(hyper-
)
method
also
analyzed,
whereby
${\lambda
}_{0},$?>
0,
parameter
analogous
,$?>
obtained
through
CV.
analysis
synthetic
dataset
suggests
that
values
selected
generalized
modified
CV
are
most
accurate
among
those
studied.
Furthermore,
indicates
hyper-
approach
outperforms
optimal
regression.
Due
its
broad
scope,
research
will
foster
additional
vital
topics
hyperparameter
for
deconvolution.
provides,
pyDRTtools,
implementation,
which
serve
starting
point
future
research.
Abstract
Lithium
metal
batteries
(LMBs)
have
attracted
considerable
interest
for
use
in
electric
vehicles
and
as
next‐generation
energy
storage
devices
because
of
their
high
density.
However,
a
significant
practical
drawback
with
LMBs
is
the
instability
Li
metal/electrolyte
interface,
concurrent
parasitic
reactions
dendrite
growth,
that
leads
to
low
Coulombic
efficiency
poor
cycle
life.
Owing
role
electrolytes
batteries,
rationally
designed
can
improve
electrochemical
performance
possibly
achieve
fast
charge
wide
range
working
temperatures
meet
various
requirements
market
future.
Although
there
are
some
review
papers
about
LMBs,
focus
has
been
on
single
parameter
or
separately
and,
therefore,
not
sufficient
design
advanced
environments.
This
presents
systematic
summary
recent
progress
made
terms
electrolytes,
covering
fundamental
understanding
mechanism,
scientific
challenges,
strategies
address
drawbacks
high‐performance
LMBs.
The
advantages
disadvantages
electrolyte
also
analyzed,
yielding
suggestions
optimum
properties
applications.
Finally,
most
promising
research
directions
discussed
briefly.
Batteries,
Год журнала:
2024,
Номер
10(1), С. 24 - 24
Опубликована: Янв. 9, 2024
This
review
focuses
on
the
promising
technology
of
solid-state
batteries
(SSBs)
that
utilize
lithium
metal
and
solid
electrolytes.
SSBs
offer
significant
advantages
in
terms
high
energy
density
enhanced
safety.
categorizes
electrolytes
into
four
classes:
polymer,
oxide,
hybrid,
sulfide
Each
class
has
its
own
unique
characteristics
benefits.
By
exploring
these
different
classes,
this
aims
to
shed
light
diversity
materials
their
contributions
advancement
SSB
technology.
In
order
gain
insights
latest
technological
developments
identify
potential
avenues
for
accelerating
progress
SSBs,
examines
intellectual
property
landscape
related
Thus,
recent
patent
filed
by
main
companies
area,
chosen
based
contribution
influence
field
batteries.
The
analysis
application
was
performed
through
Espacenet
database.
number
patents
from
Toyota,
Samsung,
LG
is
very
important;
they
represent
more
than
3400
patents,
equivalent
2/3
world’s
production
SSBs.
addition
focusing
three
famous
companies,
we
also
focused
15
other
analyzing
a
hundred
patents.
objective
provide
comprehensive
overview
strategies
employed
various
battery
technologies,
bridging
gap
between
applied
academic
research.
Some
technologies
presented
have
already
been
commercialized
and,
certainly,
an
acceleration
industrialization
will
be
seen
years
come.
Carbon Neutralization,
Год журнала:
2025,
Номер
4(2)
Опубликована: Фев. 21, 2025
ABSTRACT
Lithium
iron
phosphate
(LiFePO
4
)
serves
as
a
commonly
used
cathode
material
in
lithium‐ion
batteries
and
is
an
essential
power
source
for
consumer
electronics
electric
vehicles.
Nevertheless,
significant
degradation
its
electrochemical
performance
occurs
at
low
temperatures,
leading
to
energy
losses,
challenges
charging,
reduced
lifespan,
heightened
safety
concerns—critical
factors
LiFePO
applications.
This
review
outlines
recent
progress
aimed
enhancing
the
low‐temperature
of
batteries,
concentrating
on
mechanisms
involved
various
modification
strategies.
The
primary
contributing
subzero
temperatures
are
first
examined.
A
variety
strategies
designed
improve
interfacial
internal
reaction
kinetics
cathodes
under
cold
conditions
emphasized,
feasible
approaches
also
presented.
These
include
optimizing
cell
design
enhance
inherent
reactivity
employing
heating
techniques
raise
external
temperatures.
In
conclusion,
this
discusses
limitations
associated
with
settings
examines
advancements
from
system
level.
insights
provided
intended
motivate
further
developments
other
technologies
tailored
ACS Applied Materials & Interfaces,
Год журнала:
2021,
Номер
13(39), С. 47163 - 47173
Опубликована: Сен. 24, 2021
Solid
polymer
electrolytes
(SPEs)
of
superior
ionic
conductivity,
long-term
cycling
stability,
and
good
interface
compatibility
are
regarded
as
promising
candidates
to
enable
the
practical
applications
solid
lithium
metal
batteries
(SLMBs).
Here,
a
mixed-matrix
SPE
(MMSE)
with
incorporated
metal–organic
frameworks
(MOFs)
liquid
is
prepared.
The
dissociation
Li
salt
in
MMSE
can
be
promoted
effectively
due
introduction
MOF
via
Fourier-transform
infrared
spectroscopy
(FT-IR)
analysis,
density
functional
theory
calculation,
molecular
dynamics
simulation.
as-formed
exhibits
an
ultralow
thickness
20
μm
satisfactory
conductivity
lithium-ion
transference
number
(1.1
mS
cm–1
at
30
°C,
0.72).
optimized
SLMBs
high-voltage
LiMn0.75Fe0.25PO4
(LMFP)
exhibit
excellent
cyclability
4.2
V
under
room
temperature.
Moreover,
Li/MMSE/LiFePO4
cells
have
desirable
cycle
performance
from
−20
100
their
capacity
remains
143.3
mA
h
g–1
after
being
cycled
300
times
10
C
°C.
Li/LiFePO4
pouch
also
show
safety
extreme
conditions.
symmetric
work
steadily
even
supreme
current
4
cm–2
From
above
these
MMSEs
present
new
opportunities
for
development
electrochemical
properties.
