ChemSusChem,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 8, 2024
Zn-ion
batteries
(ZIBs)
have
garnered
growing
interest
in
large-scale
energy
storage
devices
for
the
high
safety,
theoretical
capacity
and
low
electrochemical
potential.
Nevertheless,
their
widespread
applications
are
significantly
impeded
by
dendrite
formation,
hydrogen
evolution
corrosion
reactions
of
Zn
anodes.
Herein,
a
bi-functional
polyacrylic
acid
(PAA)
modified-Zn
anode
(Zn-PAA)
is
designed
to
concurrently
inhibit
formation
alleviate
side
durable
ZIBs.
The
PAA
coating
not
only
selectively
acid-etches
active
crystal
facets
guide
planar
deposition
along
highly-exposed
Zn(002)
facet,
but
also
facilitate
uniform
through
coordination
between
polymer
functional
groups
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 7, 2025
Abstract
The
widespread
application
of
aqueous
zinc‐ion
batteries
(AZIBs)
is
hindered
by
anode
dendrite
formation
and
side
reactions,
reducing
cycling
life
performance.
This
study
introduces
Bi‐Bi₂O₃‐loaded
carbon
nanofibers
(Bi‐Bi₂O₃@CNF)
with
hierarchical
hollow
structures
surface
grooves
fabricated
via
electrospinning,
thermal
treatment,
in
situ
growth.
Experimental
characterization
density
functional
theory
reveal
that
the
high
area
fibrous
network
Bi‐Bi₂O₃@CNF
enhance
electron
transport
electrolyte
distribution,
effectively
ohmic
resistance
concentration
polarization.
“Spatial
Effect”
provides
ample
space
for
uniform
Zn
deposition.
Additionally,
situ‐grown
Bi‐Bi₂O₃,
pyridinic
nitrogen,
pyrrolic
C─O─Bi
bonds
induce
strong
zinc
affinity
electronegativity,
generating
an
“Electrostatic
Confinement
amplifies
“spatial
effect”
into
a
“Dual‐Confinement
Effect.”
synergy
ensures
deposition,
suppresses
dendrites
mitigates
Compared
to
pure
anodes,
reduces
polarization
overpotential
17.6%,
increases
hydrogen
evolution
11.52%,
maintains
Coulombic
efficiency
98.8%
over
200
h.
In
full
cells,
Zn@Bi‐Bi₂O₃@CNF//MnO₂
achieves
73.0%
capacity
retention
after
1000
cycles
at
mA
g⁻¹.
work
promising
strategy
high‐efficiency,
durable,
safe
AZIBs
offers
valuable
insights
design
advanced
energy
storage
materials.
Batteries,
Journal Year:
2024,
Volume and Issue:
10(7), P. 222 - 222
Published: June 24, 2024
Zinc-ion
capacitors
(ZICs),
combining
the
merits
of
both
high-energy
zinc-ion
batteries
and
high-power
supercapacitors,
are
known
as
high-potential
electrochemical
energy
storage
(EES)
devices.
However,
research
on
ZICs
still
faces
many
challenges
because
lack
appropriate
cathode
materials
with
robust
crystal
structures
rich
channels
for
stable
fast
Zn2+
ion
transport.
In
this
study,
we
synthesized
a
robust,
conductive,
two-dimensional
metal–organic
framework
(MOF)
material,
zinc-benzenehexathiolate
(Zn-BHT),
investigated
its
performance
zinc
storage.
ions
could
insert
into/extricate
from
host
structure
high
diffusion
rate,
enabling
Zn-BHT
to
exhibit
surface-controlled
charge
mechanism.
Due
unique
structure,
exhibited
good
reversible
discharge
capacity
approaching
90.4
mAh
g−1
at
0.1
A
g−1,
well
desirable
rate
capability
cycling
performance.
addition,
ZIC
device
was
fabricated
using
polyaniline-derived
porous
carbon
(PC)
anode,
which
depicted
working
voltage
up
1.8
V
density
~37.2
Wh
kg−1.
This
work
shows
that
conductive
MOFs
electrode
provide
new
enlightenment
development
EES
