Journal of The Electrochemical Society,
Journal Year:
2024,
Volume and Issue:
171(10), P. 100534 - 100534
Published: Oct. 1, 2024
Lithium-ion
batteries
(LIBs)
based
on
conventional
electrolyte
suffer
from
poor
cycling
performance
at
low
temperatures
due
to
the
reduced
ionic
conductivity
of
electrolytes,
sluggish
charge
transfer
reaction,
and
Li
plating
during
charging
process.
Herein,
we
propose
a
dual
cosolvent
composed
methyl
acetate
(MA)
ethyl
fluoroacetate
(EFA).
MA
effectively
viscosity
electrolyte,
improving
temperatures.
EFA
facilitated
de-solvation
+
ions
formed
an
anion-derived
solvation
structure,
enabling
formation
inorganic-rich
solid
interphase
graphite
anode.
Due
synergistic
effect
EFA,
graphite/LiFePO
4
cell
employing
exhibited
good
temperatures,
delivering
discharge
capacity
68.7
mAh
g
−1
−20
°C
0.2
C
showing
retention
99.7%
after
100
cycles
0.33
C.
Additionally,
initial
131.2
25
1.0
C,
with
99.4%
300
cycles.
Our
results
demonstrate
that
liquid
electrolytes
containing
various
beneficial
roles
can
be
promising
solution
for
low-temperature
LIBs.
Nano-Micro Letters,
Journal Year:
2025,
Volume and Issue:
17(1)
Published: Feb. 17, 2025
Abstract
Electrolytes
are
crucial
components
in
electrochemical
energy
storage
devices,
sparking
considerable
research
interest.
However,
the
significance
of
anions
electrolytes
is
often
underestimated.
In
fact,
have
significant
impacts
on
performance
and
stability
lithium
batteries.
Therefore,
comprehensively
understanding
anion
chemistry
importance.
Herein,
in-depth
comprehension
its
positive
effects
interface,
solvation
structure
Li-ions,
as
well
batteries
been
emphasized
summarized.
This
review
aims
to
present
a
full
scope
furnish
systematic
cognition
for
rational
design
advanced
better
with
high
density,
lifespan,
safety.
Furthermore,
insightful
analysis
perspectives
based
current
proposed.
We
hope
that
this
sheds
light
new
electrolytes.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 20, 2024
Abstract
With
the
growing
demand
for
high‐voltage
and
wide‐temperature
range
applications
of
lithium‐ion
batteries
(LIBs),
requirements
electrolytes
have
become
increasingly
stringent.
While
fluorination
engineering
has
enhanced
performance
traditional
solvent
systems,
it
also
raised
concerns
regarding
cost,
environmental
hazards,
low
reduction
stability.
Through
strategic
molecular
bond
design,
a
novel
class
low‐temperature
(LT)
solvents—siloxanes—is
identified,
meeting
demands
LT
in
LIBs.
The
d‐p
conjugation
Si─O
enhances
voltage
resistance
weakens
Li
+
‐solvent
interactions.
By
modulating
number
conjugated
bonds,
type
anion
clusters
solvation
structure
can
be
controlled,
ultimately
leading
to
formation
LiF
Si─O‐rich
interfacial
layer
facilitating
rapid
conduction.
Consequently,
graphite||NCM811
pouch
cell
(2.3
Ah,
4.45
V)
with
siloxane‐based
electrolyte
retains
75.1%
room
temperature
capacity
(RTC)
at
−50
°C.
interface
kinetics
allow
superior
reversible
charging
retention
67.6%
−40
°C,
good
cycle
stability
−20
This
study
provides
new
insights
into
design
fortify
LIB
harsh
conditions.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(49)
Published: Aug. 20, 2024
Abstract
Polyester‐based
electrolytes
formed
via
in
situ
polymerization,
have
been
regarded
as
one
of
the
most
promising
solid
electrolyte
systems.
Nevertheless,
it
is
still
a
great
challenge
to
address
issue
their
high
reactivity
with
metallic
lithium
anode
by
optimizing
components
and
properties
interphase
(SEI).
Herein,
new
class
N‐containing
additive,
isopropyl
nitrate
(ISPN)
that
can
be
miscible
ester
solvents
demonstrated,
chemically
stable
ion‐conductive
LiF‐Li
3
N
composite
SEI
constructed.
In
addition,
ISPN
induce
formation
anion‐enriched
solvation
structures
reduces
desolvation
barrier
Li
+
,
resulting
fast
transport
.
With
addition
ISPN,
ionic
conductivity
has
nearly
doubled,
reaching
5.3
×
10
−4
S
cm
−1
What's
more,
LiFePO
4
(LFP)|ISPN‐PTA|Li
cell
exhibits
exceptional
cycle
stability
charging
capabilities,
maintaining
cycling
for
850
cycles
at
C
rate.
Even
when
paired
high‐voltage
cathode,
LiNi
0.6
Co
0.2
Mn
O
2
(NCM622)|ISPN‐PTA|Li
achieves
an
impressive
capacity
retention
97.59%
after
165
5
C.
This
study
offers
novel
approach
ester‐based
polymer
electrolytes,
paving
way
toward
development
high‐energy
metal
battery
technologies.
Journal of the American Chemical Society,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 27, 2025
Current
lithium
batteries
experience
significant
performance
degradation
under
extreme
temperature
conditions,
both
high
and
low.
Traditional
wide-temperature
electrolyte
designs
typically
addressed
these
challenges
by
manipulating
the
solvation
sheath
selecting
solvents
with
melting/boiling
points.
However,
solvent-mediated
solutions,
while
effective
at
one
extreme,
invariably
fail
opposite
end
due
to
inherent
difficulties
in
maintaining
solvent
stability
across
wide
temperatures.
Herein,
we
report
use
of
main
salt
simultaneously
address
interfacial
extremely
low
This
approach
is
different
from
conventional
strategies.
As
a
proof
concept,
utilized
nitrate
(LiNO3)
establish
an
anion-controlled
structure
electric
double
layer.
The
formulated
electrolytes
exhibited
remarkable
extremes,
retaining
56.1%
capacity
-60
°C
sustaining
400
stable
cycles
80
°C.
In
contrast,
based
on
current
strategies
failed
operate
could
not
exceed
50
By
shifting
focus
rather
than
solvent,
our
work
offers
possibility
addressing
enduring
broad
range.
Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 9, 2025
Abstract
Lithium
batteries,
favored
for
their
high
energy
density
and
long
lifespan,
are
staples
in
electric
vehicles,
portable
electronics,
aerospace.
A
key
component,
Li
salts,
aids
lithium
ion
migration
electrode
protection,
significantly
impacting
battery
performance.
Developing
an
ideal
salt,
balancing
stability,
solubility,
dissociation,
solvation,
eco‐friendliness,
remains
challenging.
Given
the
scarcity
of
relevant
reviews,
it
is
endeavored
here
to
present
a
novel
perspective
on
salt
chemistry,
offering
concise
roadmap
future
designs
innovations.
It
delved
into
trends,
opportunities,
design
principles,
evaluation
methodologies
related
with
particular
emphasis
organic
anionic
compositions.
Furthermore,
latest
most
representative
salts
from
intrinsic
structure
coordination
highlighting
unique
features
contributions
organized
presented.
Finally,
visionary
outlook
articulated
this
field,
exploring
avenues,
such
as
customizing
specific
applications,
synthesizing
demand,
discussing
potential
F‐free
alongside
electrochemical
window
challenges.
Here
served
strategic
compass,
addressing
shortcomings
existing
reviews
guiding
functionalized
salts.
Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 21, 2025
Abstract
Low‐concentration
electrolytes
(LCEs)
present
significant
potential
for
actual
applications
because
of
their
cost‐effectiveness,
low
viscosity,
reduced
side
reactions,
and
wide‐temperature
electrochemical
stability.
However,
current
electrolyte
research
predominantly
focuses
on
regulation
strategies
conventional
1
m
electrolytes,
high‐concentration
localized
leaving
design
principles,
optimization
methods,
prospects
LCEs
inadequately
summarized.
face
unique
challenges
that
cannot
be
addressed
by
the
existing
theories
approaches
applicable
to
three
common
mentioned
above;
thus,
tailored
provide
development
guidance
are
urgently
needed.
Herein,
a
systematic
overview
recent
progress
in
is
provided
subsequent
directions
suggested.
This
review
proposes
core
challenge
high
solvent
ratio
LCEs,
which
triggers
unstable
organic‐enriched
electrolyte/electrode
interface
formation
anion
depletion
near
anode.
On
basis
these
issues,
modification
including
passivation
construction
solvent‒anion
interaction
optimization,
used
various
rechargeable
battery
systems.
Finally,
role
advanced
simulations
cutting‐edge
characterization
techniques
revealing
LCE
failure
mechanisms
further
highlighted,
offering
new
perspectives
future
practical
application
next‐generation
batteries.
