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.
Journal of the American Chemical Society,
Journal Year:
2023,
Volume and Issue:
145(34), P. 18992 - 19004
Published: Aug. 21, 2023
An
AB2X4
spinel
structure,
with
tetrahedral
A
and
octahedral
B
sites,
is
a
paradigmatic
class
of
catalysts
several
possible
geometric
configurations
numerous
applications,
including
polysulfide
conversion
in
metal–sulfur
batteries.
Nonetheless,
the
influence
configuration
composition
on
mechanisms
catalysis
precise
manner
which
facilitate
polysulfides
remain
unknown.
To
enable
controlled
exposure
single
active
configurations,
herein,
Cotd2+
Cooh3+
Co3O4
for
sodium
are
large
part
replaced
by
Fetd2+
Feoh3+,
respectively,
generating
FeCo2O4
CoFe2O4.
Through
an
examination
electrochemical
activation
energies,
characterization
symmetric
cells,
theoretical
calculations,
we
determine
that
serves
as
site
breaking
S–S
bonds,
while
functions
formation
S–Na
bonds.
The
current
study
underlines
subtle
relationship
between
activity
catalysts,
providing
unique
insights
rational
development
improved
optimizing
their
atomic
configuration.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(35)
Published: June 20, 2024
Abstract
Construction
advanced
fibers
with
high
Faradic
activity
and
conductivity
are
effective
to
realize
energy
density
sufficient
redox
reactions
for
fiber‐based
electrochemical
supercapacitors
(FESCs),
yet
it
is
generally
at
the
sacrifice
of
kinetics
structural
stability.
Here,
a
high‐entropy
doping
strategy
proposed
develop
high‐energy‐density
FESCs
based
on
doped
metal
oxide@graphene
fiber
composite
(HE‐MO@GF).
Due
synergistic
participation
multi‐metal
elements
via
doping,
HE‐MO@GF
features
abundant
oxygen
vacancies
from
introducing
various
low‐valence
ions,
lattice
distortions,
optimized
electronic
structure.
Consequently,
maintains
active
sites,
low
diffusion
barrier,
fast
adsorption
kinetics,
improved
conductivity,
enhanced
stability,
Faradaic
reversibility.
Thereinto,
presents
ultra‐large
areal
capacitance
(3673.74
mF
cm
−2
)
excellent
rate
performance
(1446.78
30
mA
in
6
M
KOH
electrolyte.
The
HE‐MO@GF‐based
solid‐state
also
deliver
(132.85
µWh
),
good
cycle
(81.05%
capacity
retention
after
10,000
cycles),
robust
tolerance
sweat
erosion
multiple
washing,
which
woven
into
textile
power
wearable
devices
(e.g.,
watch,
badge
luminous
glasses).
This
provides
significant
guidance
designing
innovative
materials
highlights
development
next‐generation
devices.
Advanced Science,
Journal Year:
2024,
Volume and Issue:
11(19)
Published: March 13, 2024
Abstract
Zinc‐organic
batteries
(ZOBs)
are
receiving
widespread
attention
as
up‐and‐coming
energy‐storage
systems
due
to
their
sustainability,
operational
safety
and
low
cost.
Charge
carrier
is
one
of
the
critical
factors
affecting
redox
kinetics
electrochemical
performances
ZOBs.
Compared
with
conventional
large‐sized
sluggish
Zn
2+
storage,
non‐metallic
charge
carriers
small
hydrated
size
light
weight
show
accelerated
interfacial
dehydration
fast
reaction
kinetics,
enabling
superior
metrics
for
Thus,
it
valuable
ongoing
works
build
better
ZOBs
ion
storage.
In
this
review,
versatile
cationic
(H
+
,
NH
4
)
anionic
(Cl
−
OH
CF
3
SO
2−
first
categorized
a
brief
comparison
respective
physicochemical
properties
chemical
interactions
redox‐active
organic
materials.
Furthermore,
work
highlights
implementation
effectiveness
ions
in
ZOBs,
giving
insights
into
impact
types
on
(capacity,
rate
capability,
operation
voltage,
cycle
life)
cathodes.
Finally,
challenges
perspectives
non‐metal‐ion‐based
outlined
guild
future
development
next‐generation
energy
communities.
Small,
Journal Year:
2024,
Volume and Issue:
20(33)
Published: April 3, 2024
An
electrochemical
capacitor
configuration
extends
its
operational
potential
window
by
leveraging
diverse
charge
storage
mechanisms
on
the
positive
and
negative
electrodes.
Beyond
harnessing
capacitive,
pseudocapacitive,
or
Faradaic
energy
enhancing
performance
at
high
rates,
achieving
a
balance
of
stored
across
electrodes
poses
significant
challenge
over
wide
range
charge-discharge
currents
sweep
rates.
Consequently,
fabricating
hybrid
asymmetric
supercapacitors
demands
precise
evaluations
electrode
materials
development
reliable
methodology.
This
work
provides
an
overview
fundamental
aspects
related
to
charge-storage
methods,
aiming
discern
contribution
each
process.
Subsequently,
properties,
including
working
windows,
rate
capability
profiles,
stabilities,
various
families
are
explored.
It
is
then
demonstrated,
how
balancing
between
falters
broad
Finally,
methodology
for
in
proposed,
outlining
multiple
conditions
dependent
loaded
mass
current.
Two
step-by-step
tutorials
model
examples
applying
this
also
provided.
The
proposed
anticipated
stimulate
continued
dialogue
among
researchers,
fostering
advancements
stable
high-performance
supercapacitor
devices.
Journal of Materials Chemistry C,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Jan. 1, 2024
Unique
structural
design
and
precise
compositional
adjustment
are
universally
accepted
as
effective
methods
for
the
enhancement
of
microwave
absorption
capacity.
