Advanced Materials,
Год журнала:
2024,
Номер
36(29)
Опубликована: Апрель 3, 2024
Abstract
Flexible
zinc–air
batteries
are
the
leading
candidates
as
next‐generation
power
source
for
flexible/wearable
electronics.
However,
constructing
safe
and
high‐performance
solid‐state
electrolytes
(SSEs)
with
intrinsic
hydroxide
ion
(OH
−
)
conduction
remains
a
fundamental
challenge.
Herein,
by
adopting
natural
robust
cellulose
nanofibers
(CNFs)
building
blocks,
biomass
SSEs
penetrating
water
channels
constructed
knitting
OH
‐conductive
CNFs
water‐retentive
together
via
an
energy‐efficient
tape
casting.
Benefiting
from
abundant
interconnected
hydrated
wires
fast
under
nanoconfined
environment,
reveal
high
water‐uptake,
impressive
conductivity
of
175
mS
cm
−1
mechanical
robustness
simultaneously,
which
overcomes
commonly
existed
dilemma
between
property.
Remarkably,
flexible
assemble
deliver
exceptional
cycle
lifespan
310
h
density
126
mW
−2
.
The
design
methodology
opens
new
avenue
to
batteries.
Nano-Micro Letters,
Год журнала:
2024,
Номер
16(1)
Опубликована: Янв. 12, 2024
Improving
the
long-term
cycling
stability
and
energy
density
of
all-solid-state
lithium
(Li)-metal
batteries
(ASSLMBs)
at
room
temperature
is
a
severe
challenge
because
notorious
solid-solid
interfacial
contact
loss
sluggish
ion
transport.
Solid
electrolytes
are
generally
studied
as
two-dimensional
(2D)
structures
with
planar
interfaces,
showing
limited
further
resulting
in
unstable
Li/electrolyte
cathode/electrolyte
interfaces.
Herein,
three-dimensional
(3D)
architecturally
designed
composite
solid
developed
independently
controlled
structural
factors
using
3D
printing
processing
post-curing
treatment.
Multiple-type
electrolyte
films
vertical-aligned
micro-pillar
(p-3DSE)
spiral
(s-3DSE)
rationally
developed,
which
can
be
employed
for
both
Li
metal
anode
cathode
terms
accelerating
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(37)
Опубликована: Апрель 10, 2024
Abstract
As
a
promising
energy
storage
device,
an
aqueous
zinc
ion
battery
(AZIB)
still
suffers
dendrite
growth,
hydrogen
evolution,
and
corrosion.
Hydrogel
electrolyte
solves
the
above
issues
to
some
extent.
Nevertheless,
mechanical
properties
of
most
hydrogel
electrolytes
are
not
competitive
enough
meet
booming
demand
for
flexible
electronics.
In
this
work,
robust
“chain‐gear”
(PM‐HE)
crosslinked
by
polymeric
micelles
(PMs)
is
constructed,
in
which
PMs
serve
as
“gears”
form
structure
with
polyanion
chains.
Specifically,
support
molecular
chains,
constructing
hierarchically
porous
structures
opening
up
paths
Zn
2+
.
Apart
from
crosslinkers,
exist
mechanism
chains
promote
decoupling.
Such
can
realize
desolvation
accelerate
transport.
Thereby,
PM‐HE
possesses
excellent
ionic
conductivity
(60.6
mS
cm
−1
)
ultrahigh
transference
number
(0.88).
Symmetrical
cells
stable
cycling
over
1500
h
uniform
deposition.
Remarkably,
has
tensile
(0.23
MPa)
compressive
(11.3
profited
strengthening
toughening
effect
PMs.
The
supply
power
stably
under
harsh
conditions.
This
work
proposes
strategy
all‐around
based
on
reasonable
design
network
structure,
providing
more
possibilities
practical
application
AZIB.
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(24)
Опубликована: Фев. 16, 2024
Abstract
Polyethylene
oxide
(PEO)
solid
electrolytes
are
regarded
as
a
promising
candidate
for
all‐solid‐state
lithium
batteries
owing
to
their
high
safety
and
interfacial
compatibility.
However,
PEO
electrolyte
is
plagued
by
relatively
weak
structural
strength
unsatisfactory
Li
+
conductivity.
Herein,
mechanically
strong
conductively
favorable
cellulosic
scaffold
of
fabricated
through
amino
(‐NH
2
)
modification
g‐C
3
N
4
(CN)
incorporation
bacterial
cellulose
(BC)
under
microbial
circumstance.
The
biologically
‐NH
modified
BC
(B‐NBC)
entangled
with
CN
nanosheets
(CN@B‐NBC)
an
in
situ
secretion
nanocellulose
followed
hydrogen
bond‐induced
self‐assembly.
groups
from
B‐NBC
weaken
the
complexation
its
counterpart,
thus
facilitating
release
more
free
.
C‐N
covalence
extra
lone
electrons
further
strengthens
skeleton
meanwhile
offers
sufficient
anchors
migration.
After
infiltrating
LiTFSI/PEO
(LP),
LP/CN@B‐NBC
composite
(CSE)
exhibits
transference
number
ionic
Upon
coupling
LiFePO
cathode,
full
battery
remarkably
specific
capacity,
superior
rate
capability,
decent
cycling
stability.
This
work
pioneers
attempts
chemical
decoration
ingredient
architecture
CSE
aid
bottom‐up
biosynthetic
avenue.
Advanced Materials,
Год журнала:
2024,
Номер
36(29)
Опубликована: Апрель 3, 2024
Abstract
Flexible
zinc–air
batteries
are
the
leading
candidates
as
next‐generation
power
source
for
flexible/wearable
electronics.
However,
constructing
safe
and
high‐performance
solid‐state
electrolytes
(SSEs)
with
intrinsic
hydroxide
ion
(OH
−
)
conduction
remains
a
fundamental
challenge.
Herein,
by
adopting
natural
robust
cellulose
nanofibers
(CNFs)
building
blocks,
biomass
SSEs
penetrating
water
channels
constructed
knitting
OH
‐conductive
CNFs
water‐retentive
together
via
an
energy‐efficient
tape
casting.
Benefiting
from
abundant
interconnected
hydrated
wires
fast
under
nanoconfined
environment,
reveal
high
water‐uptake,
impressive
conductivity
of
175
mS
cm
−1
mechanical
robustness
simultaneously,
which
overcomes
commonly
existed
dilemma
between
property.
Remarkably,
flexible
assemble
deliver
exceptional
cycle
lifespan
310
h
density
126
mW
−2
.
The
design
methodology
opens
new
avenue
to
batteries.
