Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(49)
Published: Aug. 6, 2024
Abstract
Attracted
by
the
high
specific
capacity
and
energy
density,
transition
metal‐sulfides
exhibit
great
application
potential
as
sodium‐ion
batteries
anode,
but
still
suffer
from
uncontrolled
separation
of
M/S
phase
inferior
conductivity.
Herein,
flower‐like
Fe
1‐x
S@Sb@C
(FF)
is
rationally
tailored,
accompanied
double‐layer
heterojunctions
C–S–Sb/Sb–S–Fe
“bridge”
bonds.
Meanwhile,
bimetallic
phases/boundary
defects
built‐in
electric
fields
are
formed
with
a
strong
electronic
coupling
effect,
effectively
alleviating
(Fe/Sb
S),
significantly
enhancing
ion/e
−
As
expected,
FF
delivers
an
ultra‐fast
sodium‐ions
storage
rate
436.5/334.3
mAh
g
−1
even
at
10.0/20.0
A
.
When
operation
temperature
lowered
to
‐5
°C,
reversible
can
remain
≈349.7
Assisted
detailed
kinetic
analysis
theoretical
calculations,
their
ion‐storage
abilities
mainly
derive
improved
interfacial
Na
+
/e
transfer
surface/near‐surface
redox
behaviors.
Moreover,
reassembling
evolution
active
phases
revealed
in/ex
situ
techniques,
further
demonstrating
stable
adsorption/anchoring
intermediate
reaction
products
Fe/Sb–S
on
heterointerface,
accompanying
conversion‐alloying
reaction.
Given
this,
this
interesting
work
anticipated
offer
in‐depth
insight
into
fading
mechanism,
effective
strategy
design
metal‐sulfur
anodes
for
advanced
systems.
Nano Letters,
Journal Year:
2024,
Volume and Issue:
24(10), P. 3273 - 3281
Published: March 1, 2024
As
intelligent
technology
surges
forward,
wearable
electronics
have
emerged
as
versatile
tools
for
monitoring
health
and
sensing
our
surroundings.
Among
these
advancements,
porous
triboelectric
materials
garnered
significant
attention
their
lightness.
However,
face
the
challenge
of
improving
structural
stability
to
further
enhance
accuracy
sensors.
In
this
study,
a
lightweight
strong
cellulosic
material
is
designed
by
cell
wall
nanoengineering.
By
tailoring
structure,
shows
high
mechanical
strength
51.8
MPa.
The
self-powered
sensor
constructed
has
sensitivity
33.61
kPa–1,
fast
response
time
36
ms,
excellent
pressure
detection
durability.
Notably,
still
enables
performance
after
exposure
200
°C
achieves
real-time
feedback
human
motion,
thereby
demonstrating
great
potential
in
field
electronic
devices.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: July 20, 2024
Abstract
The
large
size
of
K
+
ions
(1.38
Å)
sets
a
challenge
in
achieving
high
kinetics
and
long
lifespan
potassium
storage
devices.
Here,
fibrous
ZrO
2
membrane
is
utilized
as
reactive
template
to
construct
dual‐carbon
K‐ion
capacitor.
Unlike
graphite,
‐catalyzed
graphitic
carbon
presents
relatively
disordered
layer
arrangement
with
an
expanded
interlayer
spacing
0.378
nm
accommodate
insertion/extraction.
Pyridine‐derived
nitrogen
sites
can
locally
store
K‐ions
without
disrupting
the
formation
stage‐1
graphite
intercalation
compounds
(GICs).
Consequently,
N‐doped
hollow
fiber
achieves
‐storage
capacity
(primarily
below
1
V),
which
1.5
time
that
commercial
graphite.
Potassium‐ion
hybrid
capacitors
are
assembled
using
electrodes
nanofiber
separator.
capacitor
exhibits
power
40
000
W
kg
−1
,
full
charge
8.5
s,
93%
retention
after
5000
cycles
at
A
g
low
self‐discharge
rate
8.6
mV
h
.
scalability
performance
lattice‐expanded
tubular
underscores
may
advance
practical
potassium‐ion
capacitors.
Advanced Science,
Journal Year:
2024,
Volume and Issue:
11(23)
Published: April 1, 2024
Abstract
Graphite
is
considered
to
be
the
most
auspicious
anode
candidate
for
potassium
ion
batteries.
However,
inferior
rate
performances
and
cycling
stability
restrict
its
practical
applications.
Few
studies
have
investigated
modulating
graphitization
degree
of
graphitic
materials.
Herein,
a
nitrogen‐doped
carbon‐coated
carbon
fiber
composite
with
tunable
(CNF@NC)
through
etching
growth,
in‐situ
oxidative
polymerization,
subsequent
carbonization
process
reported.
The
prepared
CNF@NC
abundant
electrochemical
active
sites
rapid
K
+
/electron
transfer
pathway,
can
effectively
shorten
distance
promote
insertion/removal
.
Amorphous
domains
short‐range
curved
graphite
layers
provide
ample
mitigation
spaces
storage,
alleviating
volume
expansion
highly
graphitized
CNF
during
repeated
insertion/de‐intercalation.
As
expected,
CNF@NC‐5
electrode
presents
high
initial
coulombic
efficiency
(ICE)
69.3%,
an
unprecedented
reversible
volumetric
capacity
510.2
mA
h
cm
−3
at
0.1
A
g
−1
after
100
cycles
mass‐capacity
294.9
storage
mechanism
reaction
kinetic
analysis
are
studied
by
combining
first‐principles
calculation.
It
manifests
that
in
adsorption‐insertion‐insertion
(i.e.,
“1+2”
model).
solid
electrolyte
interphase
(SEI)
film
forming
also
detected.
RSC Advances,
Journal Year:
2025,
Volume and Issue:
15(4), P. 2582 - 2590
Published: Jan. 1, 2025
Heteroatom-doped
hierarchical
porous
carbon
(AF-MMTC)
was
prepared
with
hard
template
and
salt
dual
templating
agents,
the
synergistically
construct
pore
structures
at
different
scales.
Nano-Micro Letters,
Journal Year:
2025,
Volume and Issue:
17(1)
Published: Jan. 28, 2025
Abstract
All-solid-state
batteries
(ASSBs)
are
pursued
due
to
their
potential
for
better
safety
and
high
energy
density.
However,
the
density
of
cathode
ASSBs
does
not
seem
be
satisfactory
low
utilization
active
materials
(AMs)
at
loading.
With
small
amount
solid
electrolyte
(SE)
powder
in
cathode,
poor
electrochemical
performance
is
often
observed
contact
loss
non-homogeneous
distribution
AMs
SEs,
leading
tortuosity
limitation
lithium
electron
transport
pathways.
Here,
we
propose
a
novel
design
that
can
achieve
volumetric
1258
Wh
L
−1
AM
content
85
wt%
by
synergizing
merits
AM@SE
core–shell
composite
particles
with
conformally
coated
thin
SE
shell
prepared
from
mechanofusion
process
particles.
The
structure
an
intimate
guarantees
ionic
conduction
pathway
while
unharming
electronic
conduction.
In
addition,
play
role
filler
reduces
packing
porosity
electrode
as
well
between
separator
layer.
systematic
demonstration
optimization
may
provide
understanding
guidance
on
electrodes
density,
capacity,
ultimately
