Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 17, 2024
Abstract
Ether‐based
electrolytes
show
great
potential
in
low‐temperature
lithium
metal
batteries
(LMBs)
for
their
low
viscosity
and
decent
reduction
stability.
However,
conventional
ethers
with
multidentate
chelate
sites
suffer
from
oxidation
stability
high
desolvation
energy
barrier
due
to
the
strong
coordination
between
oxygen
Li
+
.
Herein,
cyclic
tetrahydropyran
(THP)
a
unidentate
site
is
designed
as
solvent,
fluoroethylene
carbonate
(FEC)
nitrate
(LiNO
3
)
serve
additives
LMBs.
The
strain
effect
endow
THP
weak
affinity
ions,
which
accelerates
process
induces
anion‐derived
electrode/electrolyte
interface
at
temperature.
formed
inorganic‐rich
further
improves
expedites
interfacial
ion
transportation.
As
result,
assembled
Li‐LiNi
0.8
Mn
0.1
Co
O
2
(NMC811)
cell
stably
cycles
87%
capacity
retention
after
100
−40
°C
4.5
V.
2.7
Ah
Li‐NMC811
pouch
an
density
of
403
Wh
kg
−1
delivers
53%
room‐temperature
−50
°C.
This
work
reveals
that
regulating
solvents
can
well
optimize
realize
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
64(1)
Published: Aug. 29, 2024
Fluorinated
ether-based
electrolytes
are
commonly
employed
in
lithium
metal
batteries
(LMBs)
to
attenuate
the
coordination
ability
of
ether
solvents
with
Li
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 4, 2024
Extending
the
stability
of
ether
solvents
is
pivotal
for
developing
low-temperature
and
high-voltage
lithium
batteries.
Herein,
we
elucidate
oxidation
behavior
tetrahydrofuran
with
ternary
BF
Materials,
Journal Year:
2025,
Volume and Issue:
18(2), P. 274 - 274
Published: Jan. 9, 2025
An
experimental
investigation
is
conducted
to
identify
the
optimal
blend
of
fluoroethylene
carbonate
(FEC),
3,3,3-trifluoropropylene
(TFEC),
and
various
fluorinated
ethers,
including
1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl
ether
(HFE),
1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropyl
(TTE),
bis(2,2,2-trifluoroethyl)
(BTE),
enhance
performances
lithium-ion
cells
at
high
voltage.
The
cell
incorporating
TTE
exhibits
a
significantly
superior
capacity
for
retention
after
long-term
cycling
4.5
V,
which
might
be
attributed
improved
kinetics
lithium
ions
generation
thin,
reliable,
inorganic-rich
electrode-electrolyte
interface.
This
enhancement
facilitates
greater
ion
mobility
within
cell,
while
effectively
suppressing
active
loss
side
reactions
between
electrodes
electrolytes
elevated
voltages.
Furthermore,
with
demonstrates
rate
capability
high-temperature
performance.
As
result
inherent
safety
characteristics
these
all-fluorinated
electrolytes,
using
formulations
show
excellent
properties
under
typical
abuse
scenarios.
Except
temperatures,
none
undergo
thermal
runaway
when
subjected
mechanical
or
electrical
abuse,
there
are
minimal
differences
in
performance
across
different
formulations.
Considering
electrochemical
performance,
safety,
cost
factors,
it
can
concluded
that
more
cooperate
FEC
TFEC
high-performance
high-voltage
cells.
Chemical Science,
Journal Year:
2025,
Volume and Issue:
16(10), P. 4335 - 4341
Published: Jan. 1, 2025
Organic
carbonyl
electrode
materials
(OCEMs)
have
shown
great
promise
for
high-performance
lithium
batteries
due
to
their
high
capacity,
renewability,
and
environmental
friendliness.
Nevertheless,
the
severe
dissolution
of
these
in
conventional
electrolytes
results
poor
cycling
stability,
which
hinders
practical
application.
Herein,
a
unified
model
considering
effects
both
ion-solvation
structures
electrolyte
solvents
is
proposed
elucidate
mechanism
OCEMs
electrolytes.
In
this
new
model,
driven
by
interactions
with
free
(uncoordinated)
non-polar
electrolytes,
strong
between
Li-anion
aggregates
accelerate
OCEMs,
leading
anomalously
solubility
OCEMs.
Conversely,
strongly
polar
dominated
interaction
solvents.
This
transcends
perspective
that
dissociation
solely
depends
on
solute-solvent
interactions.
Based
we
propose
tuning
altering
solvent
polarity
could
be
an
effective
strategy
inhibiting
organic
electrodes
achieve
long-cycle
Li-organic
batteries.
ACS Nano,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 26, 2025
The
interfacial
wettability
between
electrodes
and
electrolytes
could
ensure
sufficient
physical
contact
fast
mass
transfer
at
the
gas-solid-liquid,
solid-liquid,
solid-solid
interfaces,
which
improve
reaction
kinetics
cycle
stability
of
rechargeable
metal-based
batteries
(RMBs).
Herein,
engineering
multiphase
interfaces
is
summarized
from
electrolyte
electrode
aspects
to
promote
interface
rate
durability
RMBs,
illustrates
revolution
that
taking
place
in
this
field
thus
provides
inspiration
for
future
developments
RMBs.
Specifically,
review
presents
principle
macro-
microscale
summarizes
emerging
applications
concerning
effect
on
Moreover,
deep
insight
into
development
provided
outlook.
Therefore,
not
only
insights
but
also
offers
strategic
guidance
modification
optimization
toward
stable
electrode-electrolyte
Nature Communications,
Journal Year:
2025,
Volume and Issue:
16(1)
Published: May 7, 2025
Lithium
metal
negative
electrode
is
pivotal
for
advancing
high-energy-density
lithium
batteries.
Despite
their
promise,
the
inherent
poor
interfacial
stability
of
electrolytes
on
and
repeated
reconstruction
solid
electrolyte
interphase
lead
to
continuous
consumption
active
Li
electrolyte,
causing
rapid
failure
batteries
under
practical
conditions.
Here,
we
propose
compressing
spacing
between
ions
anions
recruit
more
around
ions,
forming
tighter
solvation
clusters,
then
achieving
super-saturated
with
a
16
M
salt
concentration
in
solvent
phase.
This
compressed
structure
demonstrates
enhanced
towards
electrode,
attaining
than
99.9%
coulombic
efficiency
Li||Cu
cells
enabling
long
cycling
life
lean-Li
full
cells.
Designed
positive
material
proportion
68%,
our
pouch
cell
achieves
specific
energy
510.3
Wh
kg-1
(based
total
mass
cell)
maintains
stable
over
100
cycles.
