ACS Energy Letters,
Год журнала:
2024,
Номер
9(11), С. 5391 - 5402
Опубликована: Окт. 15, 2024
Sparsely
solvating
electrolyte
(SSE),
which
can
achieve
a
quasi-solid-phase
sulfur
reaction
path,
stands
out
as
promising
strategy
to
alleviate
the
dependence
on
usage
and
construct
lean-electrolyte
lithium–sulfur
(Li–S)
batteries.
Nonetheless,
its
formation
relies
upon
high
dosage
of
salt
diluent,
thereby
leading
increased
cost.
To
this
end,
we
herein
customize
localized
SSE
(LSSE)
featuring
low
ratio
salt-to-solvent
diluent-to-solvent
through
alkyl
chain
tuning.
A
multimodal
2D
nuclear
magnetic
resonance
technique
is
developed
unveil
Li-ion
solvation
sheath
reorganization,
crucial
for
studying
coordination
dynamics
in
liquid
electrolytes.
LSSE
affords
an
anion-derived
solid
interface
effective
restriction
shuttling
effect;
hence,
our
Li–S
batteries
sustain
steady
operation
under
4
μL
mgS–1
3
mg
cm–2.
Our
work
opens
new
avenue
advancing
design
pursuit
pragmatic
Advanced Materials,
Год журнала:
2024,
Номер
36(29)
Опубликована: Май 2, 2024
Lithium-ion
batteries
(LIBs),
in
which
lithium
ions
function
as
charge
carriers,
are
considered
the
most
competitive
energy
storage
devices
due
to
their
high
and
power
density.
However,
battery
materials,
especially
with
capacity
undergo
side
reactions
changes
that
result
decay
safety
issues.
A
deep
understanding
of
cause
battery's
internal
components
mechanisms
those
is
needed
build
safer
better
batteries.
This
review
focuses
on
processes
failures,
voltage
temperature
underlying
factors.
Voltage-induced
failures
from
anode
interfacial
reactions,
current
collector
corrosion,
cathode
overcharge,
over-discharge,
while
temperature-induced
failure
include
SEI
decomposition,
separator
damage,
between
electrodes
electrolytes.
The
also
presents
protective
strategies
for
controlling
these
reactions.
As
a
result,
reader
offered
comprehensive
overview
features
various
LIB
components.
Advanced Materials,
Год журнала:
2023,
Номер
36(13)
Опубликована: Дек. 17, 2023
The
fillers
in
composite
solid-state
electrolyte
are
mainly
responsible
for
the
enhancement
of
conduction
Li
ions
but
barely
regulate
formation
solid
interphase
(SEI).
Herein,
a
unique
filler
dielectric
NaNbO
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(11)
Опубликована: Янв. 16, 2024
Abstract
The
growth
of
disorganized
lithium
dendrites
and
weak
solid
electrolyte
interphase
greatly
impede
the
practical
application
metal
batteries.
Herein,
we
designed
synthesized
a
new
kind
stable
polyimide
covalent
organic
frameworks
(COFs),
which
have
high
density
well‐aligned
lithiophilic
quinoxaline
phthalimide
units
anchored
within
uniform
one‐dimensional
channels.
COFs
can
serve
as
an
artificial
on
anode,
effectively
guiding
deposition
ions
inhibiting
dendrites.
unsymmetrical
Li||COF−Cu
battery
exhibits
Coulombic
efficiency
99
%
at
current
0.5
mA
cm
−2
,
be
well
retained
up
to
400
cycles.
Meanwhile,
Li‐COF||LFP
full
cell
shows
over
charge
0.3
C.
And
its
capacity
maintained
91
even
after
150
Therefore,
significant
electrochemical
cycling
stability
illustrates
feasibility
employing
in
solving
disordered
National Science Review,
Год журнала:
2024,
Номер
11(11)
Опубликована: Окт. 15, 2024
ABSTRACT
The
poor
oxidation
resistance
of
traditional
electrolytes
has
hampered
the
development
high-voltage
potassium-ion
battery
technology.
Here,
we
present
a
cosolvent
electrolyte
design
strategy
to
overcome
limitations
chemistries.
breaks
dissolution
limitation
salt
through
ion–dipole
interactions,
significantly
enlarging
anion-rich
solvation
clusters,
as
verified
by
insitu
synchrotron-based
wide-angle
X-ray
scattering
experiments.
Furthermore,
large
clusters
also
facilitate
formation
an
effective
electrode–electrolyte
interphase,
thereby
enhancing
compatibility
with
electrodes.
enables
K||Prussian
blue
cells
(2–4.5
V)
operate
for
>700
cycles
capacity
retention
91.9%.
Our
paves
new
avenues
batteries
and
beyond.
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(28)
Опубликована: Июнь 4, 2024
Abstract
Electrolyte
design
is
indeed
a
highly
effective
strategy
to
improve
battery
performance.
However,
identifying
the
intermolecular
interaction
in
electrolyte
solvation
structure
rarely
reported
potassium‐ion
batteries.
Herein,
it
discovered
that
solvent‐solvent
can
be
formed
when
introducing
cyclopentylmethyl
ether
(CPME)
solvent
into
commonly
used
1,2‐dimethoxyethane
(DME)‐based
electrolytes.
Such
not
only
analyzed
by
2D
1
H‐
H
correlation
spectroscopy
for
first
time
but
also
found
weaken
K
+
‐DME
significantly,
consequently
enabling
reversible
(de‐)intercalation
within
graphite.
By
employing
this
without
using
any
fluorine‐based
solvent,
new
fluorine‐free
and
low‐concentration
ether‐based
designed,
which
compatible
with
graphite
facilitates
of
high‐energy‐density
safe
potassium
ion
sulfur
A
novel
molecular
interfacial
model
further
presented
analyze
behaviors
‐solvent‐anion
complexes
on
electrode
surface
are
affected
interactions,
elucidating
reasons
behind
superior
compatibility
performance
at
scale.
This
work
sheds
some
light
critical
role
solvent–solvent
interactions
batteries
provides
valuable
insights
engineering
enhancing
electrolytes
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(19)
Опубликована: Фев. 23, 2024
Abstract
In
solid‐state
lithium
metal
batteries
(SSLMBs),
the
inhomogeneous
electrolyte‐electrode
interphase
layer
aggravates
interfacial
stability,
leading
to
discontinuous
ion/charge
transport
and
continuous
degradation
of
electrolyte.
Herein,
we
constructed
an
anion‐modulated
ionic
conductor
(AMIC)
that
enables
in
situ
construction
electrolyte/electrode
interphases
for
high‐voltage
SSLMBs
by
exploiting
conformational
transitions
under
multiple
interactions
between
polymer
salt
anions.
Anions
modulate
decomposition
behavior
supramolecular
poly
(vinylene
carbonate)
(PVC)
at
electrode
interface
changing
spatial
conformation
chains,
which
further
enhances
ion
stabilizes
morphology.
addition,
AMIC
weakens
“Li
+
‐solvation”
increases
Li
vehicle
sites,
thereby
enhancing
lithium‐ion
number
(
t
=~0.67).
Consequently,
||
LiNi
0.8
Co
0.1
Mn
O
2
cell
maintains
about
85
%
capacity
retention
Coulombic
efficiency
>99.8
200
cycles
a
charge
cut‐off
voltage
4.5
V.
This
study
provides
new
understanding
anions
regulating
chain
segment
electrolyte
(SPE)
highlights
importance
environment
phases
conduction.
ACS Nano,
Год журнала:
2024,
Номер
18(16), С. 10726 - 10737
Опубликована: Апрель 11, 2024
Ether-based
high-voltage
lithium
metal
batteries
(HV-LMBs)
are
drawing
growing
interest
due
to
their
high
compatibility
with
the
Li
anode.
However,
commercialization
of
ether-based
HV-LMBs
still
faces
many
challenges,
including
short
cycle
life,
limited
safety,
and
complex
failure
mechanisms.
In
this
Review,
we
discuss
recent
progress
achieved
in
electrolytes
for
propose
a
systematic
design
principle
electrolyte
based
on
three
important
parameters:
electrochemical
performance,
industrial
scalability.
Finally,
summarize
challenges
commercial
application
suggest
roadmap
future
development.
