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.
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(22)
Опубликована: Март 25, 2023
The
advent
of
wearable
electronics
has
strongly
stimulated
advanced
research
into
the
exploration
flexible
zinc-air
batteries
(ZABs)
with
high
theoretical
energy
density,
inherent
safety,
and
low
cost.
However,
half-open
battery
structure
concentration
alkaline
aqueous
environment
pose
great
challenges
on
electrolyte
retention
capability
zinc
anode
stability.
Herein,
a
starch-based
superabsorbent
hydrogel
polymer
(SSHPE)
ionic
conductivity,
absorption
capabilities,
strong
resistance
stability
been
designed
applied
in
ZABs.
Experimental
calculational
analyses
probe
root
superiority
SSHPEs,
confirming
significance
carboxyl
functional
groups
along
their
chains.
These
features
endow
as-fabricated
ZAB
long
cycle
life
300
h,
much
longer
than
that
commonly
used
poly(vinyl
alcohol)-based
electrolyte.
Advanced Materials,
Год журнала:
2023,
Номер
36(4)
Опубликована: Окт. 26, 2023
Abstract
Flexible
quasi‐solid‐state
sodium
ion
batteries
featuring
their
low‐cost,
high
safety
and
excellent
mechanical
strength
have
attracted
widespread
interest
in
the
field
of
wearable
electronic
devices.
However,
development
such
faces
great
challenges
including
construction
interfacial
compatible
flexible
electrode
materials
addressing
demands
electrolyte.
Here
selenium‐vacancies
regulated
bimetallic
selenide
heterojunctions
anchored
on
waste
cotton
cloth‐derived
carbon
cloth
(FCC)
with
robust
C‐Se‐Co/Fe
chemical
bonds
as
a
anode
material
(CCFSF)
is
proposed
by
ultrafast
microwave
pyrolysis
method.
Rich
selenium
vacancies
CoSe
2
/FeSe
2−x
heterostructures
are
synchronously
formed
that
can
significantly
improve
ionic
diffusion
kinetics.
Additionally,
uniform
layer
coating
surface
Se‐deficient
endows
it
outstanding
structural
stability.
The
cathode
(PB@FCC)
also
fabricated
directly
growing
Prussian
blue
nanoparticles
FCC.
Furthermore,
an
advanced
Na‐ion
pouch
cell
assembled
coupling
CCFSF
anode,
PB@FCC
P(VDF‐HFP)‐based
gel
polymer
full
not
only
demonstrates
energy
storage
performance
but
flexibility
safety.
present
work
offers
effective
avenue
to
achieve
device,
promoting
ACS Energy Letters,
Год журнала:
2024,
Номер
9(4), С. 1803 - 1825
Опубликована: Март 29, 2024
Growing
concern
regarding
the
impact
of
fossil
fuels
has
led
to
demands
for
development
green
and
renewable
materials
advanced
electrochemical
energy
storage
devices.
Biopolymers
with
unique
hierarchical
structures
physicochemical
properties,
serving
as
an
appealing
platform
advancement
sustainable
energy,
have
found
widespread
application
in
gel
electrolytes
supercapacitors.
In
this
Review,
we
outline
structure
characteristics
various
biopolymers,
discuss
proposed
mechanisms
assess
evaluation
metrics
supercapacitor
devices,
further
analyze
roles
biopolymer
context.
The
state-of-the-art
performance
biopolymer-based
hydrogel
supercapacitors
their
multiple
functionalities
are
summarized,
while
underscoring
current
technical
challenges
potential
solutions.
This
Review
is
intended
offer
a
thorough
overview
recent
developments
electrolytes,
highlighting
research
concerning
devices
avenues
development.
The
advent
of
implantable
bioelectronic
devices
offers
prospective
solutions
toward
health
monitoring
and
disease
diagnosis
treatments.
However,
advances
in
power
modules
have
lagged
far
behind
the
tissue-integrated
sensor
nodes
circuit
units.
Here,
we
report
a
soft
system
that
monolithically
integrates
wireless
energy
transmission
storage
modules.
unit
comprises
biodegradable
Zn-ion
hybrid
supercapacitors
use
molybdenum
sulfide
(MoS2)
nanosheets
as
cathode,
ion-crosslinked
alginate
gel
electrolyte,
zinc
foil
anode,
achieving
high
capacitance
(93.5
mF
cm-2)
output
voltage
(1.3
V).
Systematic
investigations
been
conducted
to
elucidate
charge
mechanism
supercapacitor
assess
biodegradability
biocompatibility
materials.
Furthermore,
wirelessly
transmitted
can
not
only
supply
directly
applications
but
also
ensure
constant,
reliable
output.
Its
capabilities
successfully
demonstrated
for
controlled
drug
delivery.
Advanced Energy Materials,
Год журнала:
2024,
Номер
14(23)
Опубликована: Апрель 9, 2024
Abstract
Physical
hydrogels
crosslinked
by
noncovalent
interactions
are
promising
in
flexible
zinc–metal
batteries
for
their
component
controllability
and
environmental
friendliness.
However,
the
compatibility
of
PVA‐based
electrolyte
kosmotropic
salt
remains
a
challenge,
which
shows
an
unclear
mechanism.
Here,
“good‐to‐poor”
solvent
substitution
strategy
is
adopted
to
develop
PVA
hydrogel
with
good
(ZnSO
4
).
Stretching
polymer
conformation
preshielding
strong
intrachain
hydrogen
bonds
solvents
activating
interchain
interaction
situ
poor
will
induce
formation
homogeneous
network
release
hydrated
hydroxyl
groups
fast
ion
transport.
This
multiscale
microstructure
improves
ionic
conductivity
liquid
retention
salt.
Additionally,
this
preshielded
offers
great
battery
performance,
1300
h
stable
cycling
at
1
mA
cm
−2
low
voltage
hysteresis;
extended
cycle
life
220
68.4%
zinc
utilization.
Importantly,
Zn//MnO
2
pouch
cell
maintains
98.4%
capacity
after
100
cycles
0.2
A
g
−1
features
reliability.
These
concepts
address
inherent
barriers
salt‐based
electrolytes
advance
development
soft
electronics.
Energy & Environmental Science,
Год журнала:
2024,
Номер
17(10), С. 3270 - 3306
Опубликована: Янв. 1, 2024
QSSEs
are
emerging
in
aqueous
ZBs
and
modern
applications.
By
summarizing
the
fundamentals
of
materials
properties,
battery
performance
applications
QSSEs,
this
review
provides
insight
into
future
development
optimization
wider
application
fields.
