ACS Applied Energy Materials,
Journal Year:
2025,
Volume and Issue:
8(1), P. 376 - 387
Published: Jan. 3, 2025
Ammonium
ion
storage
is
poised
to
revolutionize
energy
because
of
its
affordability,
safety,
abundance
elements,
and
eco-friendliness.
However,
the
potential
NH4+
has
been
elusive
as
a
result
difficulties
in
host
materials
development.
For
first
time,
we
have
explored
capabilities
nanocomposite
made
ammonium
vanadium
oxide
(NVO)
porous
activated
carbon
(PAC).
This
NVO–PAC
boasts
specific
capacitance
527
mF
cm–2,
surpassing
367
cm–2
value
NVO
alone
at
constant
current
density
2
mA
cm–2.
The
PAC
combination
significantly
increases
surface
area,
contributing
nanocomposite's
enhanced
capacitance.
synergistic
mechanisms
deintercalation/intercalation
adsorption
ions
on
further
amplify
Moreover,
fabricated
symmetric
cell
using
NVO–PAC,
delivering
an
outstanding
95
mWh
power
2400
mW
exceptional
cycling
stability,
retaining
100%
original
even
after
104
cycles
with
97%
Coulombic
efficiency.
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
35(41)
Published: Aug. 23, 2023
Ammonium
ions
(NH4+
)
are
emerging
non-metallic
charge
carriers
for
advanced
electrochemical
energy
storage
devices,
due
to
their
low
cost,
elemental
abundance,
and
environmental
benignity.
However,
finding
suitable
electrode
materials
achieve
rapid
diffusion
kinetics
NH4+
remains
a
great
challenge.
Herein,
2D
conjugated
metal-organic
framework
(2D
c-MOF)
immobilizing
iodine,
as
high-performance
cathode
material
hybrid
supercapacitors,
is
reported.
Cu-HHB
(HHB
=
hexahydroxybenzene)
MOF
embedded
with
iodine
(Cu-HHB/I2
features
excellent
electrical
conductivity,
highly
porous
structure,
rich
accessible
active
sites
of
copper-bis(dihydroxy)
(Cu─O4
iodide
species,
resulting
in
remarkable
areal
capacitance
111.7
mF
cm-2
at
0.4
mA
.
Experimental
results
theoretical
calculations
indicate
that
the
Cu─O4
species
play
critical
role
binding
polyiodide
suppressing
its
dissolution,
well
contributing
large
pseudocapacitance
adsorbed
iodide.
In
combination
MXene
anode,
full
supercapacitors
deliver
an
density
31.5
mWh
long-term
cycling
stability
89.5%
retention
after
10
000
cycles,
superior
those
state-of-the-art
supercapacitors.
This
study
sheds
light
on
design
storage,
enabling
development
novel
devices.
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
36(1)
Published: Aug. 9, 2023
Abstract
Low‐cost,
safe,
and
environmental‐friendly
rechargeable
aqueous
zinc‐ion
batteries
(ZIBs)
are
promising
as
next‐generation
energy
storage
devices
for
wearable
electronics
among
other
applications.
However,
sluggish
ionic
transport
kinetics
the
unstable
electrode
structure
during
insertion/extraction
hamper
their
deployment.
Herein,
a
new
cathode
material
based
on
layered
metal
chalcogenide
(LMC),
bismuth
telluride
(Bi
2
Te
3
),
coated
with
polypyrrole
(PPy)
is
proposed.
Taking
advantage
of
PPy
coating,
Bi
@PPy
composite
presents
strong
absorption
affinity,
high
oxidation
resistance,
structural
stability.
The
ZIBs
cathodes
exhibit
capacities
ultra‐long
lifespans
over
5000
cycles.
They
also
present
outstanding
stability
even
under
bending.
In
addition,
here
reaction
mechanism
analyzed
using
in
situ
X‐ray
diffraction,
photoelectron
spectroscopy,
computational
tools
it
demonstrated
that,
system,
Zn
2+
not
inserted
into
previously
assumed.
contrast,
proton
charge
dominates
process.
Overall,
this
work
only
shows
great
potential
LMCs
ZIB
materials
advantages
but
clarifies
charge/discharge
LMCs.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(15), P. 18824 - 18832
Published: April 3, 2024
Aqueous
ammonium
ion
hybrid
supercapacitor
(A-HSC)
is
an
efficient
energy
storage
device
based
on
nonmetallic
carriers
(NH4+),
which
combines
advantages
such
as
low
cost,
safety,
and
sustainability.
However,
unstable
electrode
structures
are
prone
to
structural
collapse
in
aqueous
electrolytes,
leading
fast
capacitance
decay,
especially
host
materials
represented
by
vanadium-based
oxidation.
Here,
the
Co2+
preintercalation
strategy
used
stabilize
VO2
tunnel
structure
improve
electrochemical
stability
of
NH4+
process.
In
addition,
understanding
mechanism
has
been
deepened
through
ex
situ
characterization
analysis.
The
results
indicate
that
effectively
enhances
conductivity
VO2,
inhibits
dissolution
V
electrolytes.
charge
mechanisms
intercalation/deintercalation
reversible
formation/fracture
hydrogen
bonds
were
revealed.
ACS Applied Nano Materials,
Journal Year:
2024,
Volume and Issue:
7(14), P. 16075 - 16085
Published: July 5, 2024
The
construction
of
hierarchical
structures
has
been
demonstrated
to
be
an
effective
method
for
achieving
high-performance
microwave
absorption.
In
this
study,
a
flower-like
MoS2
nanosheet-coated
tubular
carbon
composite
with
average
diameter
approximately
560
nm
was
synthesized
via
straightforward
ion-exchange
and
pyrolysis
strategy.
growth
nanosheets,
the
presence
heterojunction
surfaces,
hollow
structure
collectively
enhance
dielectric
loss
material,
thereby
optimizing
absorption
properties
material.
C@MoS2
nanocomposite
demonstrates
minimum
reflection
−66.8
dB
bandwidth
4.8
GHz
when
thickness
is
only
1.6
mm.
This
work
presents
synergistic
strategy
design
layered
structures.
Nanoscale,
Journal Year:
2024,
Volume and Issue:
16(16), P. 7734 - 7751
Published: Jan. 1, 2024
This
review
provides
the
recent
progress,
challenges,
and
future
prospects
for
CVD
growth
of
graphene,
TMDCs
their
hybrids
with
3D
architectures,
as
well
applications
in
electrocatalytic
HER
various
secondary
batteries.
