Orbital and Electrical Dual Function of Polymer Intercalant for Promoting NH4+ Storage in Vanadium Oxide Anode
Advanced Energy Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 26, 2025
Abstract
Polymer‐intercalated
metal
oxides
have
attracted
considerable
attention
for
ammonium
ions
(NH
4
+
)
storage
due
to
their
enhanced
interlayer
space,
which,
through
the
pillar
effect,
facilitates
rapid
and
efficient
transport
of
NH
.
However,
understanding
remains
limited
regarding
how
polymer
intercalants
affect
intrinsic
structure
host
materials,
especially
variations
in
atomic
orbital
electronic
structural
induced
by
intercalants.
Herein,
a
polyaniline‐intercalated
vanadium
oxide
(P‐VO
x
is
developed
and,
first
time,
its
behavior
validated
as
an
anode
material.
Using
various
spectroscopy
techniques
combined
with
theoretical
simulation,
changes
are
analyzed
intercalant.
Spectroscopy
studies
reveal
that
insertion
polyaniline
optimizes
V
2
O
5
,
promoting
transition
electrons
3d
xy
state
increasing
occupation
t
2g
orbital,
thereby
enhancing
electrical
conductivity.
Computational
results
confirm
P‐VO
lowers
migration
barrier,
electron/NH
transfer.
As
result,
electrode
demonstrates
outstanding
capacity
unprecedented
long‐term
cycling
stability.
This
study
provides
new
insights
into
intercalant
underscores
advantages
polymer‐intercalated
VO
high‐performance
storage.
Язык: Английский
Highly-stable polyaniline composite enhanced by conductive molybdenum dioxide nanosheets with aginomoto-resembled functionality for supercapacitors
Journal of Energy Storage,
Год журнала:
2025,
Номер
110, С. 115333 - 115333
Опубликована: Янв. 6, 2025
Язык: Английский
Electrochemical Sacrificial Alchemy: Crafting Hollow Hydroxide Hierarchy for Practical Aqueous Energy Storage Solution
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 28, 2024
Abstract
Effective
utilization
of
internal
active
sites
in
high‐mass
loading
electrode
materials
is
essential
for
advancing
practical
energy
storage.
Herein,
a
novel
electrochemical
sacrificial
alchemy
the
first
time
to
directly
transform
solid
Co‐Ni‐Zn
carbonate
hydroxide
(CH)
into
its
hollow
structure
with
strategic
hierarchical
architecture
introduced.
In
contrast
complex
and
often
cumbersome
procedures
traditional
methods,
approach
built
on
simple
electrochemically
induced
situ
etching
remodeling
process.
The
experimental
theoretical
analyses
highlight
significant
role
electric
field
force‐induced
Zn
redeposition
creating
cavities
regenerating
external
sites,
leading
final
primary
1D
nanorod
arrays
secondary
reconstructed
2D
nanoflakes,
effectively
exposing
abundant
storage
sites.
Benefiting
from
synergistic
effect,
resulting
CH
exhibited
exceptional
performance.
As
proof
concept,
modular
pouch‐type
hybrid
supercapacitor
(HSC)
composed
cathode
achieved
an
ultrahigh
density
46.9
Wh
kg
−1
.
This
device
can
efficiently
power
consumer
electronics
faster
charging
speed
compared
commercial
shared
banks.
research
unveils
facile
structuring
solutions.
Язык: Английский
Built‐In Electric Field‐Assisted Polyaniline for Boosting Dual‐Band Electrochromic Smart Windows with Multicolor Displays and Four‐Mode Conversion
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 10, 2025
Abstract
Dual‐band
electrochromic
smart
windows
(DESWs)
can
selectively
adjust
the
transmittance
of
visible
(VIS)
and
near‐infrared
(NIR)
light,
significantly
reducing
building
energy
consumption.
However,
current
DESWs
face
challenges
in
achieving
multi‐color
control
fully
independent
modulation
VIS
NIR
light.
Herein,
a
DESW
with
display
capabilities
four
distinct
operational
modes
is
presented,
achieved
by
utilizing
polyaniline
(PANI)
combination
built‐in
electric
field.
The
field,
formed
at
interface
between
Au
PANI,
enhances
transport
speed
ions
electrons
during
(EC)
process,
facilitating
electronic
transitions
polarons,
bipolarons,
quinonoid
units.
This
improvement
EC
performance
Au/PANI
Schottky
junction
films
compared
to
pure
PANI
films.
enhanced
not
only
expands
from
three
four,
but
also
provides
faster
response
times
(τ
c
/τ
b
=
1.1/5.4
s
1600
nm,
τ
0.9/1.3
633
nm)
superior
cycle
stability.
Additionally,
large‐scale
(5
×
5
cm
2
)
device
demonstrated,
effectively
controlling
both
temperature
light
flux.
incorporation
field
accelerates
electron
ion
transfer,
providing
promising
strategy
for
developing
high‐performance
applications
energy‐efficient
buildings.
Язык: Английский
High Energy Efficiency on Zn–Air/Iodide Hybrid Batteries with Iron Phthalocyanine Coupled Co Single Atoms Dual Active Sites
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Июнь 1, 2025
Abstract
Rechargeable
zinc–air
batteries
(ZABs)
are
hindered
by
substantial
voltage
hysteresis
and
limited
cycling
stability.
To
address
these
challenges,
a
dual‐innovation
strategy
is
developed
through
synergistic
electrolyte
engineering
catalyst
design.
First,
implemented
the
incorporation
of
KI
into
electrolyte,
transforming
conventional
ZABs
zinc–air/iodide
hybrid
(ZAIHBs).
This
modification
replaces
oxygen
evolution
reaction
(OER)
with
iodine
oxidation
(IOR),
which
operates
at
significantly
reduced
overpotential.
Second,
FePc@CoSAs/NC
constructed
anchoring
iron
phthalocyanine
(FePc)
on
Co
single‐atom/N‐doped
carbon
substrates.
exhibiting
half‐wave
potential
0.89
V
for
ORR
achieving
1.26
10
mA
cm
−2
IOR
record‐low
ORR/IOR
gap
0.37
V.
The
optimized
ZAIHBs
demonstrate
exceptional
energy
efficiency
75%
stability
(73.5%
retention
over
350
h),
surpassing
ZABs.
Density
functional
theory
calculations
reveal
that
Co–Fe
dual‐site
coordination
optimizes
adsorption
energetics
critical
intermediates
(OH*
in
I*
IOR),
elucidating
enhanced
kinetics.
work
establishes
co‐design
paradigm
high‐performance
systems
integrated
engineering.
Язык: Английский