Advanced Materials,
Journal Year:
2023,
Volume and Issue:
36(6)
Published: Nov. 4, 2023
The
quasi-solid
electrolytes
(QSEs)
attract
extensive
attention
due
to
their
improved
ion
transport
properties
and
high
stability,
which
is
synergistically
based
on
tunable
functional
groups
confined
solvent
molecules
among
the
polymetric
networks.
However,
trade-off
effect
between
polymer
content
ionic
conductivity
exists
in
QSEs,
limiting
rate
performance.
In
this
work,
epitaxial
polymerization
strategy
used
build
gradient
hydrogel
networks
(GHNs)
covalently
fixed
zinc
anode.
Then,
it
revealed
that
asymmetric
distribution
of
negative
charges
benefits
GHNs
with
fast
selective
properties,
realizing
a
higher
Zn
Nature Communications,
Journal Year:
2023,
Volume and Issue:
14(1)
Published: Oct. 16, 2023
Progress
towards
the
integration
of
technology
into
living
organisms
requires
power
devices
that
are
biocompatible
and
mechanically
flexible.
Aqueous
zinc
ion
batteries
use
hydrogel
biomaterials
as
electrolytes
have
emerged
a
potential
solution
operates
within
biological
constraints;
however,
most
these
feature
inferior
electrochemical
properties.
Here,
we
propose
electrolyte
by
utilising
hyaluronic
acid,
which
contains
ample
hydrophilic
functional
groups.
The
gel-based
offers
excellent
anti-corrosion
ability
for
anodes
regulates
nucleation/growth.
Also,
gel
provides
high
battery
performance,
including
99.71%
Coulombic
efficiency,
over
5500
hours
long-term
stability,
improved
cycle
life
250
under
utilization
rate
80%,
biocompatibility.
Importantly,
Zn//LiMn2O4
pouch
cell
exhibits
82%
capacity
retention
after
1000
cycles
at
3
C.
This
work
presents
promising
chemistry
controls
behaviour,
offering
great
in
energy-related
applications
beyond.
Energy & Environmental Science,
Journal Year:
2023,
Volume and Issue:
16(3), P. 1291 - 1311
Published: Jan. 1, 2023
An
all-round
supramolecular
zwitterionic
hydrogel
electrolyte
with
the
advantages
of
in
situ
repair,
H
2
O-poor
interface,
and
boosting
desolvation
hydrated
Zn
2+
is
proposed
to
enable
fabrication
environment-adaptive
dendrite-free
zinc
ion
capacitors.
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(31)
Published: June 19, 2023
Aqueous
zinc
(Zn)
ion
batteries
are
attractive
for
next
generation
with
high
safety,
yet
their
applications
still
hindered
by
the
uncontrollable
dendrite
formation
and
side
reactions
on
Zn
anode.
Here,
a
polyzwitterion
protective
layer
(PZIL)
was
engineered
polymerizing
2-methacryloyloxyethyl
phosphorylcholine
(MPC)
in
carboxymethyl
chitosan
(CMCS),
which
renders
following
merits:
choline
groups
of
MPC
can
preferentially
adsorb
onto
metal
to
avoid
reactions;
charged
phosphate
chelate
Zn2+
regulate
solvation
structure,
further
improving
reaction
inhibition;
Hofmeister
effect
between
ZnSO4
CMCS
enhance
interfacial
contact
during
electrochemical
characterization.
Consequently,
symmetrical
battery
PZIL
keep
stable
more
than
1000
hours
under
ultra-high
current
density
40
mA
cm-2
.
The
confers
Zn/MnO2
full
Zn/active
carbon
(AC)
capacitor
cycling
performance
density.
ACS Nano,
Journal Year:
2023,
Volume and Issue:
17(10), P. 9565 - 9574
Published: May 9, 2023
Robust
operation
of
Zn-air
batteries
(ZABs)
with
high
capacity
and
excellent
energy
efficiency
is
desirable
for
practical
harsh
applications,
whose
bottlenecks
are
mainly
originated
from
the
sluggish
oxygen
catalytic
kinetics
unstable
Zn|electrolyte
interface.
In
this
work,
we
synthesized
edge-hosted
Mn-N4-C12
coordination
supported
on
N-doped
defective
carbon
(Mn1/NDC)
catalyst,
exhibiting
a
good
bifunctional
performance
reduction/evolution
reaction
(ORR/OER)
low
potential
gap
0.684
V.
Theoretical
calculation
reveals
that
displayed
lowest
overpotential
ORR/OER
owing
to
decreased
adsorption
free
OH*.
The
Mn1/NDC-based
aqueous
ZABs
deliver
impressive
rate
performance,
ultralong
discharging
lifespan,
stability.
Notably,
assembled
solid-state
demonstrate
1.29
Ah,
large
critical
current
density
8
mA
cm-2,
robust
cycling
stability
at
-40
°C,
which
should
be
attributed
Mn1/NDC
anti-freezing
electrolyte
(SSE).
Meanwhile,
zincophilic
nanocomposite
SSE
polarity
accounts
stable
Zn|SSE
interface
compatibility.
This
work
not
only
highlights
importance
atomic
structure
design
electrocatalysts
ultralow-temperature
high-capacity
but
also
spurs
development
sustainable
Zn-based
conditions.
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
35(36)
Published: May 27, 2023
Hydrogel
electrolytes
are
widely
explored
in
Zn
metal
batteries
for
application
wearable
electronics.
While
extensive
studies
have
been
conducted
on
optimizing
the
chemical
structure
and
boosting
tensile
elasticity,
mechanical
stability
of
hydrogel
under
repeated
deformation
is
largely
overlooked,
leading
to
unsatisfactory
performance
at
large
cycling
capacity.
This
work
systematically
analyzes
compressive
fatigue-resistance
properties
electrolyte,
revealing
critical
roles
salt
copolymer
matrix
crack
initiation
propagation.
It
shows
that,
premise
homogeneous
deposition,
an
improved
anti-fatigue
property
essential
achieve
high-capacity
anodes.
The
optimal
Zn(ClO4
)2
-polyacrylamide/chitosan
electrolyte
(C-PAMCS)
exhibits
unprecedented
lifespan
1500
h
Zn//Zn
cells
a
current
density
10
mA
cm-2
high
areal
capacity
mAh
.
potential
C-PAMCS
exemplified
all-flexible
Zn-ion
enabled
by
flexible
collector
consisting
Ag
nanowires
embedded
elastomer.
study
provides
rationale
engineering
toward
advanced
battereis
devices.
Advanced Energy Materials,
Journal Year:
2023,
Volume and Issue:
13(20)
Published: April 7, 2023
Abstract
Anode‐free
batteriesgreatly
promote
overall
energy
density,
but
they
require
an
extremely
high
Coulombic
efficiency
(CE,
>99.7%)
to
function
normally.
It
becomes
very
challenging
in
aqueous
batteries,
because
of
water‐related
parasitic
reactions
and
dendrite
growth
on
Zn
anodes.
Herein,
aluminum
hydroxide
fluoride
coated
Cu
foils
(Cu@AOF)
is
used
realize
the
anode‐free
batteries.
AOF
exhibits
a
adsorption
affinity
H
2
O
low
diffusion
barrier
for
adatoms,
promoting
desolvation
process
surface
migration.
Meanwhile,
strong
interaction
between
2+
enables
it
regulate
flux
benefit
lateral
growth.
Then,
full
cells
Cu@AOF||Zn
0.5
VO
exhibit
record‐high
cycle
life
2000
cycles
at
1
A
g
−1
with
ultra‐high
average
CE
99.95%.
More
impressively,
cell
shows
long
400
99.94%
−20
°C.
This
work
provides
sheds
light
rational
engineering
electrode
interfaces
obtain
excellent
performance
temperatures.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(21)
Published: Feb. 13, 2024
Abstract
Zinc–iodine
batteries
have
the
potential
to
offer
high
energy‐density
aqueous
energy
storage,
but
their
lifetime
is
limited
by
rampant
dendrite
growth
and
concurrent
parasite
side
reactions
on
Zn
anode,
as
well
shuttling
of
polyiodides.
Herein,
a
cation‐conduction
dominated
hydrogel
electrolyte
designed
holistically
enhance
stability
both
zinc
anode
iodine
cathode.
In
this
electrolyte,
anions
are
covalently
anchored
chains,
major
mobile
ions
in
restricted
be
2+
.
Specifically,
such
cation‐conductive
results
ion
transference
number
(0.81)
within
guides
epitaxial
nucleation.
Furthermore,
optimized
solvation
structure
reconstructed
hydrogen
bond
networks
chains
contribute
reduced
desolvation
barrier
suppressed
corrosion
reactions.
On
cathode
side,
electrostatic
repulsion
between
negative
sulfonate
groups
polyiodides
hinders
loss
active
material.
This
all‐round
design
renders
zinc–iodine
with
reversibility,
low
self‐discharge,
long
lifespan.
