Nano Letters,
Год журнала:
2024,
Номер
24(26), С. 8055 - 8062
Опубликована: Июнь 21, 2024
The
unstable
solid
electrolyte
interface
(SEI)
formed
by
uncontrollable
degradation,
which
leads
to
dendrite
growth
and
Coulombic
efficiency
decay,
hinders
the
development
of
Li
metal
anodes.
A
controllable
desolvation
process
is
essential
for
formation
stable
SEI
improved
lithium
deposition
behavior.
Here,
we
show
a
functional
artificial
protective
layer
comprised
chondroitin
sulfate-reduced
graphene
oxide
(CrG),
on
polar
groups
are
distributed
effectively
reduce
energy
barrier
ACS Nano,
Год журнала:
2024,
Номер
18(22), С. 14764 - 14778
Опубликована: Май 22, 2024
High-energy-density
lithium-metal
batteries
(LMBs)
coupling
anodes
and
high-voltage
cathodes
are
hindered
by
unstable
electrode/electrolyte
interphases
(EEIs),
which
calls
for
the
rational
design
of
efficient
additives.
Herein,
we
analyze
effect
electron
structure
on
coordination
ability
energy
levels
additive,
from
aspects
intramolecular
cloud
density
delocalization,
to
reveal
its
mechanism
solvation
structure,
redox
stability,
as-formed
EEI
chemistry,
electrochemical
performances.
Furthermore,
propose
an
reconfiguration
strategy
molecular
engineering
additives,
taking
sorbide
nitrate
(SN)
additive
as
example.
The
lone
pair
electron-rich
group
enables
strong
interaction
with
Li
ion
regulate
delocalization
yields
further
positive
synergistic
effects.
electron-withdrawing
moiety
decreases
ether-based
backbone,
improving
overall
oxidation
stability
cathode
compatibility,
anchoring
it
a
reliable
cathode/electrolyte
interface
(CEI)
framework
integrity.
In
turn,
electron-donating
bicyclic-ring-ether
backbone
breaks
inherent
resonance
nitrate,
facilitating
reducibility
form
N-contained
inorganic
Li2O-rich
solid
electrolyte
(SEI)
uniform
deposition.
Optimized
physicochemical
properties
interfacial
biaffinity
enable
significantly
improved
performance.
High
rate
(10
C),
low
temperature
(-25
°C),
long-term
(2700
h)
achieved,
4.5
Ah
level
Li||NCM811
multilayer
pouch
cell
under
harsh
conditions
is
realized
high
(462
W
h/kg).
proof
concept
this
work
highlights
that
ingenious
based
regulation
represents
energetic
modulate
interphase
providing
realistic
reference
innovations
practical
LMBs.
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 4, 2024
Mechanical
fatigue
of
the
binders
during
repeated
volume
change
Si-based
anodes
induces
binder
network
collapse,
resulting
in
lithium-ion
batteries
(LIBs)
failing
prematurely.
Herein,
we
designed
a
damageless
polymer
with
mechanically
interlocked
utilizing
[an]daisy
chains
(DCMIN)
and
poly(acrylic
acid)
(PAA)
to
improve
structural
cohesion
anode.
This
DCMIN@PAA
exhibits
robust
mechanical
properties,
high
elasticity,
excellent
adhesion.
More
importantly,
recognition
between
dialkylammonium
salt
decorated
on
thread
component
ether
group
benzo-24-crown-8
provides
efficacy
for
quickly
dissipating
energy
reducing
damage
accumulation.
Therefore,
binder,
pure-Si
anode
showcases
retention
over
1050
cycles
at
1
C
fast
rate
response
(5
C).
The
also
improves
cycling
stability
homemade
pouch
cell
using
In
addition,
water-soluble
capable
quick
release
separation,
could
facilitate
recycling
end-of-life
anode,
enhancing
sustainability
battery.
work
highlights
indispensability
dissipation
consideration
viable
path
forward
stabilize
suffering
from
change-induced
stress
Advanced Functional Materials,
Год журнала:
2023,
Номер
33(52)
Опубликована: Сен. 10, 2023
Abstract
Polymer
electrolytes
have
great
potential
to
realize
solid‐state
lithium
metal
batteries
with
high
energy
density
and
intrinsic
safety.
However,
the
poor
mechanical
strength
uncontrolled
electrolyte/electrode
interface
cannot
guarantee
stable
operation
during
long‐term
cycling.
Herein,
a
supramolecular
polyurethane
material
reinforced
by
aromatic
charge‐transfer
interactions
is
synthesized
as
electrolyte
matrix
stiffness,
excellent
toughness,
unique
dissipation
capacity.
The
optimized
network
can
dynamically
adapt
volume
fluctuating
Li
and,
importantly,
eliminate
stress‐concentrating
behavior
under
deformed
state.
As
result,
Li/Li
symmetric
cells
stably
work
for
more
than
3500
h
without
short
circuit.
And
LiFePO
4
/Li
show
superior
electrochemical
performance
over
1200
cycles
capacity
retention
of
95.4%
at
0.33
C.
approach
tune
properties
polymers
believed
provide
new
strategy
designing
solid
desirable
comprehensive
batteries.
Abstract
Lithium
(Li)
is
an
essential
element
in
modern
energy
production
and
storage
devices.
Technology
to
extract
Li
from
seawater,
which
contains
~
230
billion
tons
of
Li,
offers
a
solution
the
widespread
concern
regarding
quantitative
geographical
limitations
future
supplies.
To
obtain
green
we
propose
unassisted
photoelectrochemical
(PEC)
extraction
system
based
on
III-V-based
triple-junction
(3J)
photoelectrode
Li-ion
selective
membrane
with
only
sunlight
as
input.
A
light-harvesting/catalysis
decoupling
scheme
yielded
3J
excellent
light-harvesting
catalysis
reaction
capabilities
superb
stability
over
840
h
process.
It
allows
successfully
enrich
seawater
by
4,350
times
(
i.e
.,
0.18
ppm
783.56
ppm)
after
three
stages.
The
overall
PEC
achieved
2.08
mg
kJ
−1
solar-to-Li
efficiency
3.65%
solar-to-hydrogen
efficiency.
Graphical
Photoelectrochemical
lithium
device
designed
explore
for
first
time.
cell
(InGaP/GaAs/Ge)
constructed,
offering
suitable
operating
potential
membrane-based
process
seawater.
can
(from
ppm).
Nano Letters,
Год журнала:
2024,
Номер
24(26), С. 8055 - 8062
Опубликована: Июнь 21, 2024
The
unstable
solid
electrolyte
interface
(SEI)
formed
by
uncontrollable
degradation,
which
leads
to
dendrite
growth
and
Coulombic
efficiency
decay,
hinders
the
development
of
Li
metal
anodes.
A
controllable
desolvation
process
is
essential
for
formation
stable
SEI
improved
lithium
deposition
behavior.
Here,
we
show
a
functional
artificial
protective
layer
comprised
chondroitin
sulfate-reduced
graphene
oxide
(CrG),
on
polar
groups
are
distributed
effectively
reduce
energy
barrier
