Nano Letters,
Год журнала:
2024,
Номер
24(29), С. 8872 - 8879
Опубликована: Июль 11, 2024
Parlous
structure
integrity
of
the
cathode
and
erratic
interfacial
microdynamics
under
high
potential
take
responsibility
for
degradation
solid-state
lithium
metal
batteries
(LMBs).
Here,
high-voltage
LMBs
have
been
operated
by
modulating
polymer
electrolyte
intrinsic
through
an
intermediate
dielectric
constant
solvent
further
inducing
gradient
interphase.
Benefiting
from
chemical
adsorption
between
trimethyl
phosphate
(TMP)
cathode,
interphase
rich
in
LiPFxOy
LiF
is
induced,
thereby
ensuring
structural
interface
compatibility
commercial
LiNi0.8Co0.1Mn0.1O2
(NCM811)
even
at
4.9
V
cutoff
voltage.
Eventually,
specific
capacity
NCM811|Li
full
cell
based
on
TMP-modulated
increased
27.7%
4.5
to
V.
Such
a
universal
screening
method
solvents
its
derived
electrode
manipulation
strategy
opens
fresh
avenues
quasi-solid-state
with
energy.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 23, 2025
Abstract
Electrolyte
engineering
plays
a
critical
role
in
tuning
lithium
plating/stripping
behaviors,
thereby
enabling
safer
operation
of
metal
anodes
batteries
(LMBs).
However,
understanding
how
electrolyte
microstructures
influence
the
process
at
molecular
level
remains
significant
challenge.
Herein,
using
commonly
employed
ether‐based
as
model,
each
component
is
elucidated
and
relationship
between
behavior
established
by
investigating
effects
compositions,
including
solvents,
salts,
additives.
The
variations
Li
+
deposition
kinetics
are
not
only
analyzed
characterizing
overpotential
exchange
current
density
but
it
also
identified
that
intermolecular
interactions
previously
unexplored
cause
these
2D
nuclear
overhauser
effect
spectroscopy
(NOESY).
An
interfacial
model
developed
to
explain
solvent
interactions,
distinct
roles
anions,
additives
desolvation
thermodynamic
stability
clusters
during
process.
This
clarifies
configurations
solvents
ions
related
macroscopic
properties
chemistry.
These
findings
contribute
more
uniform
controllable
deposition,
providing
valuable
insights
for
designing
advanced
systems
LMBs.
Abstract
The
development
of
thermally
stable
separators
is
a
promising
approach
to
address
the
safety
issues
lithium‐ion
batteries
(LIBs)
owing
serious
shrinkage
commercial
polyolefin
at
elevated
temperatures.
However,
achieving
controlled
nanopores
with
uniform
size
distribution
in
thermostable
polymeric
and
high
electrochemical
performance
still
great
challenge.
In
this
study,
nanoporous
polyimide
(PI)
membranes
excellent
thermal
stability
as
high‐safety
developed
for
LIBs
using
superspreading
strategy.
polyamic
acid
solutions
enables
generation
thin
liquid
layers,
facilitating
formation
PI
controllable
narrow
ranging
from
121
±
5
nm
86
6
nm.
Such
display
structural
temperatures
up
300
°C
least
1
h.
assembled
show
specific
capacity
Coulombic
efficiency
can
work
normally
after
transient
treatment
temperature
(150
20
min)
ambient
temperature,
indicating
their
application
rechargeable
batteries.
ACS Energy Letters,
Год журнала:
2024,
Номер
9(6), С. 2960 - 2980
Опубликована: Май 28, 2024
Rechargeable
batteries
are
considered
to
be
one
of
the
most
feasible
solutions
energy
crisis
and
environmental
pollution.
As
a
bridge
between
cathode
anode
battery,
electrolytes
play
critical
roles
in
improving
battery
performance.
Recently,
high-entropy
(HEEs)
with
unique
properties
were
proposed.
Specifically,
HEEs
can
accelerate
ionic
diffusion
kinetics
promote
dissolution
salts
as
well
broaden
operating
temperature
batteries.
This
Review
provides
comprehensive
summary
application
working
mechanisms
rechargeable
First,
motivation,
history,
definitions
introduced.
Then,
enhancing
electrochemical
performance
liquid
solid-state
presented,
especially
conductivity
achieving
wide
range.
Finally,
current
issues
possible
future
directions
new
perspective
on
design
high-performance
electrolytes.
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Окт. 14, 2024
Rechargeable
batteries
with
high
durability
over
wide
temperature
is
needed
in
aerospace
and
submarine
fields.
Unfortunately,
Current
battery
technologies
suffer
from
limited
operating
temperatures
due
to
the
rapid
performance
decay
at
extreme
temperatures.
A
major
challenge
for
wide-temperature
electrolyte
design
lies
restricting
parasitic
reactions
elevated
while
improving
reaction
kinetics
low
Here,
we
demonstrate
a
temperature-adaptive
by
regulating
dipole-dipole
interactions
various
simultaneously
address
issues
both
subzero
This
approach
prevents
degradation
endowing
it
ability
undergo
adaptive
changes
as
varies.
Such
favors
form
solvation
structure
thermal
stability
rising
transits
one
that
salt
precipitation
lower
ensures
stably
within
range
of
‒60
−55
°C.
opens
an
avenue
design,
highlighting
significance
structures.
High
instability
sluggishness
electrolytes
pose
significant
barriers
towards
sodium-ion
batteries.
authors
report
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(21)
Опубликована: Янв. 30, 2024
Abstract
As
a
promising
candidate
for
the
flame‐retardant
electrolyte,
triethyl
phosphate
(TEP)/potassium
bis(fluorosulfonyl)amide
(KFSI)‐based
electrolyte
has
drawn
much
attention
in
K‐ion
battery
community.
Although
TEP/KFSI
formula
at
moderate
main
salt
concentration
(normally,
<3
m
)
enables
compatibility
of
reactive
K
metal
anode,
long‐standing
oxidative
instability
KFSI
remains
unsolved.
Here,
an
additive
strategy
is
reported
to
address
high‐voltage
issue
and
generalize
it
other
KFSI‐based
electrolytes.
The
addition
potassium
nitrate
changes
surface
charge
distribution
effectively
suppresses
decomposition
toward
cathode.
nitrate‐containing
superior
stability
4.3
V‐class
battery,
as
evidenced
by
its
80%
capacity
retention
over
2000
cycles
(≈6
months)
1
C
rate.
Moreover,
long‐cycling
graphite‐based
full
cell
with
Prussian
Blue
cathode
demonstrated.
National Science Review,
Год журнала:
2024,
Номер
11(8)
Опубликована: Июнь 25, 2024
The
coupling
of
high-capacity
cathodes
and
lithium
metal
anodes
promises
to
be
the
next
generation
high-energy-density
batteries.
However,
fast-structural
degradations
cathode
anode
challenge
their
practical
application.
Herein,
we
synthesize
an
electrolyte
additive,
tris(2,2,3,3,3-pentafluoropropyl)
borane
(TPFPB),
for
ultra-stable
(Li)
metal||Ni-rich
layered
oxide
It
can
preferentially
adsorbed
on
surface
form
a
stable
(B
F)-rich
interface
film,
which
greatly
suppresses
electrolyte-cathode
side
reactions
improves
stability
cathode.
In
addition,
electrophilicity
B
atoms
in
TPFPB
enhances
solubility
LiNO
Advanced Materials,
Год журнала:
2024,
Номер
36(25)
Опубликована: Март 7, 2024
Abstract
The
confinement
effect,
restricting
materials
within
nano/sub‐nano
spaces,
has
emerged
as
an
innovative
approach
for
fundamental
research
in
diverse
application
fields,
including
chemical
engineering,
membrane
separation,
and
catalysis.
This
principle
recently
presents
fresh
perspectives
on
addressing
critical
challenges
rechargeable
batteries.
Within
spatial
confinement,
novel
microstructures
physiochemical
properties
have
been
raised
to
promote
the
battery
performance.
Nevertheless,
few
clear
definitions
specific
reviews
are
available
offer
a
comprehensive
understanding
guide
utilizing
effect
review
aims
fill
this
gap
by
primarily
summarizing
categorization
of
effects
across
various
scales
dimensions
systems.
Subsequently,
strategic
design
environments
is
proposed
address
existing
These
solutions
involve
manipulation
physicochemical
electrolytes,
regulation
electrochemical
activity,
stability
electrodes,
insights
into
ion
transfer
mechanisms.
Furthermore,
provided
deepen
foundational
achieving
high‐performance
Overall,
emphasizes
transformative
potential
tailoring
microstructure
electrode
materials,
highlighting
their
crucial
role
designing
energy
storage
devices.
Chemical Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
Silicon
(Si)
is
considered
a
promising
anode
material
for
next-generation
lithium-ion
batteries
due
to
its
high
theoretical
specific
capacity
and
earth-abundancy.
However,
challenges
such
as
significant
volume
expansion,
unstable
solid
electrolyte
interphase
(SEI)
formation
in
incompatible
electrolytes,
slow
transport
lead
poor
cycling
rate
performance.
In
this
work,
it
demonstrated
that
superior
cyclability
capability
of
Si
anodes
can
be
achieved
using
ethyl
fluoroacetate
(EFA)
fluoroethylene
carbonate
(FEC)
solvents
with
low
binding
energy
Li+
but
sufficiently
relative
dielectric
constants.
By
weakening
the
interaction
between
solvent,
barrier
desolvation
process
lowered,
while
ensuring
conductivity
diffusion
Li+.
As
result,
silicon-carbon
optimized
exhibits
excellent
performance,
work
reversibly
1709.1
mAh
g-1
proceeds
over
250
cycles
retains
85.2%
at
0.2C.
Furthermore,
Si/C‖LiFePO4
(LFP)
full
cell
shows
an
extended
service
life
more
than
500
cycles.
This
offers
valuable
insights
into
design
weakly
solvating
electrolytes
high-performance
Si-based
batteries.
Advanced Energy Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 26, 2025
Abstract
Sodium‐ion
batteries
are
applied
to
cold‐resistant
energy
storage
hindered
by
phase
transitions
and
sluggish
Na
+
migration
of
traditional
carbonate‐based
electrolytes
at
low
temperatures.
The
desolvation
is
a
crucial
step
in
impeding
the
transport
,
which
primarily
attributes
robust
solvent
coordination
.
Herein,
low‐temperature
adaptive
electrolyte
with
an
ultraweakly
coordinated
1,3‐dioxolane
(DOL)
designed
for
constructing
anion‐rich
solvation
structure
diglyme
(G2)‐based
electrolyte.
electronegativity
oxygen
atoms
G2
attenuated
dipole‐dipole
interaction
between
DOL
G2.
As
temperature
drops,
weakened
‒O
(G2)
leads
increased
anionic
less
coordination,
facilitating
This
anionic‐enhanced
contributes
formation
stable
solid
interface
hard
carbon
(HC)
anode,
accelerates
diminishing
voltage
polarization
Consequently,
HC
anode
can
retain
high
capacity
203.9
mAh
g
‒1
(1
C)
‒50
°C,
pouch
cell
composed
HC||Na
3
V
2
(PO
4
)
‒30
°C
achieves
retention
92.43%
after
100
cycles
0.1
C.
strategy
guides
design
ultra‐low
broadens
range
applications
sodium‐ion
batteries.