NH4+-Modulated Cathodic Interfacial Spatial Charge Redistribution for High-Performance Dual-Ion Capacitors
Nano-Micro Letters,
Год журнала:
2025,
Номер
17(1)
Опубликована: Янв. 27, 2025
Abstract
Compared
with
Zn
2+
,
the
current
mainly
reported
charge
carrier
for
zinc
hybrid
capacitors,
small-hydrated-sized
and
light-weight
NH
4
+
is
expected
as
a
better
one
to
mediate
cathodic
interfacial
electrochemical
behaviors,
yet
has
not
been
unraveled.
Here
we
propose
an
-modulated
cationic
solvation
strategy
optimize
spatial
distribution
achieve
dynamic
/NH
co-storage
boosting
Zinc
capacitors.
Owing
hierarchical
solvated
structure
in
Zn(CF
3
SO
)
2
–NH
CF
electrolyte,
high-reactive
small-hydrate-sized
(H
O)
induce
Helmholtz
plane
reconfiguration,
thus
effectively
enhancing
density
activate
20%
capacity
enhancement.
Furthermore,
adsorbed
hydrated
ions
afford
high-kinetics
ultrastable
C‧‧‧H
(NH
storage
process
due
much
lower
desolvation
energy
barrier
compared
heavy
rigid
Zn(H
6
(5.81
vs.
14.90
eV).
Consequently,
physical
uptake
multielectron
redox
of
carbon
cathode
enable
capacitor
deliver
high
(240
mAh
g
−1
at
0.5
A
),
large-current
tolerance
(130
50
ultralong
lifespan
(400,000
cycles).
This
study
gives
new
insights
into
design
cathode–electrolyte
interfaces
toward
advanced
zinc-based
storage.
Язык: Английский
Hierarchically porous 3D Y-branched carbon tube grids for high-performance filter capacitors
Science China Technological Sciences,
Год журнала:
2025,
Номер
68(4)
Опубликована: Март 12, 2025
Язык: Английский
Porous aluminum supported carbon nanotubes-based 2.7 V supercapacitor for AC filtering
Electrochemistry Communications,
Год журнала:
2025,
Номер
unknown, С. 107914 - 107914
Опубликована: Март 1, 2025
Язык: Английский
Compact Carbon‐Based Ultra‐High‐Power Electrodes: A Sodium Alginate‐Induced Self‐Shrinkage and Densification Approach
Small,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 9, 2024
The
trade-off
between
compact
energy
storage
and
high-power
performance
presents
a
significant
challenge
in
device
development.
While
densifying
carbon
materials
enhances
volumetric
density
by
optimizing
the
balance
porosity
packing
density,
it
often
disrupts
electronic
conductivity
due
to
random
physical
contact
nanomodules,
limiting
power
performance.
This
work
sodium
alginate
(SA)-induced
self-shrinkage
densification
strategy
that
overcomes
this
limitation
incorporating
nanometer-sized
"spacers,"
namely
quantum
dots
(CQDs),
into
graphene
nanosheets
crosslinking
them
carbonizing
SA
accompanying
with
shrinkage.
These
CQDs
SA-derived
enhance
specific
surface
area,
conductivity,
ion
transport
rate
CQDs'
spacer
function
formation
of
welded
junction
reduced
oxide
(rGO)/CQDs
nanosheets.
Subsequently,
rGO/CQDs/SA-derived
film
exhibits
an
extraordinary
12307.7
W
cm
Язык: Английский
Carbon nanostructures for high-frequency line-filtering supercapacitors
Frontiers in Nanotechnology,
Год журнала:
2024,
Номер
6
Опубликована: Окт. 28, 2024
Supercapacitors
(SCs)
are
considered
one
of
the
front-runner
energy
storage
devices
for
future
electronic
and
automobile
device
applications.
Even
though
their
high-power
densities,
fast
charge/discharge,
long
cycling
stabilities
make
them
promising
applications,
charge-discharge
takes
place
below
1
Hz,
a
major
issue
using
as
capacitors
line
filtering
Therefore,
developing
ultrafast
electrochemical
supercapacitors
with
alternating
current
(AC)
functions
has
gained
research
attention
to
replace
conventional
aluminum
electrolytic
(AEC).
Most
available
SCs
possess
resistive
features
rather
than
capacitive
at
120
Hz
because
electrode
geometry
configurations,
which
is
bottleneck
in
line-filtering
SCs.
Addressing
this
challenge
could
be
possible
by
novel
materials
hybrid
nanostructures
meet
critical
requirements
functions.
This
mini-review
focuses
on
advancement
challenges
carbon
nanostructure-based
AC
applications
directions
growing
area.
Язык: Английский
Moisture‐Resistant Nanofiber Membrane Loaded with Copper‐Manganese‐Tin Oxides for Dust and CO Filtration in High Humidity Environments
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 1, 2024
Abstract
This
study
presents
a
novel
protective
membrane,
(0.8MnCuSnO
x
‐NaCl)@M,
designed
for
high‐efficiency
filtration
of
dust
particles
and
carbon
monoxide
(CO)
gas
offers
superior
moisture
resistance,
air
permeability,
catalytic
functionality
in
high‐humidity
underground
settings.
The
incorporating
tin
oxide‐doped
CuMnO
into
polyvinylidene
fluoride
(PVDF)
fibers
with
sodium
chloride
(NaCl),
achieves
99.99%
efficiency,
323.68
mm
s
−1
92.5%
CO
efficiency.
Concurrently,
the
membrane
exhibited
exceptional
hydrophobicity,
characterized
by
substantial
water
contact
angle
116.7°,
negligible
staining,
high
hydrostatic
pressure
rating
2035
Pa,
suitable
humid
environments.
Furthermore,
absorption
profile
featured
diminished
hydroxyl
vibrational
band,
accompanied
sustained
conversion
attesting
to
its
resistance
moisture‐induced
deterioration.
Computational
fluid
dynamics
(CFD)
simulations
further
clarify
membrane's
mechanism,
indicating
potential
selective
particle
filtration.
provides
reliable
idea
development
moisture‐resistant
fiber
membranes
efficiency
CO.
underscores
synergy
experimental
theoretical
approaches.
Язык: Английский
Supercapacitors with precision ordered structure electrodes for AC line filtering
Journal of Energy Storage,
Год журнала:
2024,
Номер
108, С. 115028 - 115028
Опубликована: Дек. 18, 2024
Язык: Английский
Carbon Nanostructures Derived from In Situ Grown ZIF Nanocages within Bacterial Cellulose for AC‐Filtering Electrochemical Capacitors
Small,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 19, 2024
Abstract
Electrochemical
capacitors
(ECs)
offer
superior
specific
capacitance
for
energy
storage
compared
to
traditional
electrolytic
but
face
limitations
in
alternating
current
(AC)
filtering
due
the
need
balancing
fast
response
and
high
capacitance.
This
study
addresses
these
challenges
by
developing
a
freestanding
nanostructured
carbon
electrode,
derived
from
rapid
carbonization
of
bacterial
cellulose
(BC)
embedded
with
zeolitic
imidazolate
framework
8
(ZIF‐8)
situ
formed
nanotubes
(CNTs).
The
electrode
exhibits
an
exceptionally
low
area
resistance
9.8
mΩ
cm
2
2.1
mF
−2
at
120
Hz,
maintaining
performance
even
frequencies.
Stacking
electrodes
enhances
5.3
,
phase
angle
degrading
−74.4°
Hz;
however,
they
retain
below
−45°
up
≈50
kHz,
demonstrating
excellent
high‐frequency
performance.
Furthermore,
connecting
three
aqueous
units
series
as
integrated
cell
or
utilizing
organic
electrolytes
extends
voltage
window
2.4
V,
enhancing
their
suitability
high‐voltage
applications.
Ripple
analysis
under
various
loads
frequencies
indicates
effective
capabilities,
highlighting
potential
ECs
next‐generation
electronic
Язык: Английский