Journal of Colloid and Interface Science,
Journal Year:
2024,
Volume and Issue:
665, P. 355 - 364
Published: March 16, 2024
Transition
metal
selenides
(TMSs)
stand
out
as
a
promising
anode
material
for
sodium-ion
batteries
(SIBs)
owing
to
their
natural
resources
and
exceptional
sodium
storage
capacity.
Despite
these
advantages,
practical
application
faces
challenges,
such
poor
electronic
conductivity,
sluggish
reaction
kinetics
severe
agglomeration
during
electrochemical
reactions,
hindering
effective
utilization.
Herein,
the
dual-carbon-confined
CoSe2/FeSe2@NC@C
nanocubes
with
heterogeneous
structure
are
synthesized
using
ZIF-67
template
by
ion
exchange,
resorcin-formaldehyde
(RF)
coating,
subsequent
in
situ
carbonization
selenidation.
The
N-doped
porous
carbon
promotes
rapid
electrolyte
penetration
minimizes
of
active
materials
charging
discharging,
while
RF-derived
framework
reduces
cycling
stress
keeps
integrity
structure.
More
importantly,
built-in
electric
field
at
boundary
layer
drives
electron
redistribution,
optimizing
enhancing
material.
Based
on
this,
exhibits
superb
performance,
delivering
high
discharge
capacity
512.6
mA
h
g−1
0.5
A
after
150
cycles
giving
298.2
10
CE
close
100.0
%
even
1000
cycles.
This
study
proposes
viable
method
synthesize
advanced
anodes
SIBs
synergy
effect
interfacial
engineering
confinement
strategy.
Nano-Micro Letters,
Journal Year:
2023,
Volume and Issue:
15(1)
Published: April 30, 2023
Heterostructure
engineering
combined
with
carbonaceous
materials
shows
great
promise
toward
promoting
sluggish
kinetics,
improving
electronic
conductivity,
and
mitigating
the
huge
expansion
of
transition
metal
sulfide
electrodes
for
high-performance
sodium
storage.
Herein,
iron
sulfide-based
heterostructures
in
situ
hybridized
nitrogen-doped
carbon
nanotubes
(Fe7S8/FeS2/NCNT)
have
been
prepared
through
a
successive
pyrolysis
sulfidation
approach.
The
Fe7S8/FeS2/NCNT
heterostructure
delivered
high
reversible
capacity
403.2
mAh
g-1
up
to
100
cycles
at
1.0
A
superior
rate
capability
(273.4
20.0
g-1)
ester-based
electrolyte.
Meanwhile,
also
demonstrated
long-term
cycling
stability
(466.7
after
1,000
5.0
outstanding
(536.5
ether-based
This
performance
could
be
mainly
attributed
fast
sodium-ion
diffusion
capacitive
contribution,
convenient
interfacial
dynamics
Small,
Journal Year:
2023,
Volume and Issue:
19(42)
Published: June 15, 2023
Nickel
sulfides
with
high
theoretical
capacity
are
considered
as
promising
anode
materials
for
sodium-ion
batteries
(SIBs);
however,
their
intrinsic
poor
electric
conductivity,
large
volume
change
during
charging/discharging,
and
easy
sulfur
dissolution
result
in
inferior
electrochemical
performance
sodium
storage.
Herein,
a
hierarchical
hollow
microsphere
is
assembled
from
heterostructured
NiS/NiS2
nanoparticles
confined
by
situ
carbon
layer
(H-NiS/NiS2
@C)
via
regulating
the
sulfidation
temperature
of
precursor
Ni-MOFs.
The
morphology
ultrathin
spherical
shells
confinement
to
active
provide
rich
channels
ion/electron
transfer
alleviate
effects
agglomeration
material.
Consequently,
as-prepared
H-NiS/NiS2
@C
exhibit
superb
properties,
satisfactory
initial
specific
953.0
mA
h
g-1
at
0.1
A
,
excellent
rate
capability
509.9
2
superior
longtime
cycling
life
433.4
after
4500
cycles
10
.
Density
functional
theory
calculation
shows
that
heterogenous
interfaces
electron
redistribution
lead
charge
NiS
NiS2
thus
favor
interfacial
transport
reduce
ion-diffusion
barrier.
This
work
provides
an
innovative
idea
synthesis
homologous
heterostructures
high-efficiency
SIB
electrode
materials.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 6, 2024
Abstract
Transition
metal
sulfides
as
anode
materials
for
sodium‐ion
batteries
(SIBs)
have
the
advantage
of
high
capacity.
However,
their
cycle‐life
and
rate
performance
at
ultra‐high
current
density
is
still
a
thorny
issue
that
limit
applicability
these
materials.
In
this
paper,
carbon‐embedded
heterojunction
with
sulfur‐vacancies
regulated
by
ultrafine
bimetallic
(vacancy‐CoS
2
/FeS
@C)
robust
interfacial
C‐S‐Co/Fe
chemical
bonds
successfully
synthesized
explored
an
material
battery.
By
changing
ratio
two
cations,
concentration
anion
sulfur
vacancies
can
be
in‐situ
adjusted
without
additional
post‐treatment.
The
as‐prepared
vacancy‐CoS
@C
offers
ultrahigh
(285.1
mAh
g
−1
200
A
),
excellent
long‐cycle
stability
(389.2
40
after
10000
cycles),
outperforming
all
reported
transition
sulfides‐based
SIBs.
Both
ex‐situ
characterizations
provide
strong
evidence
evolution
mechanism
phases
stable
solid‐electrolyte
interface
(SEI)
on
surface.
functional
theory
calculations
show
constructing
reasonable
significantly
increase
electronic
conductivity.
Notably,
assembled
@C//Na
3
V
(PO
4
)
/C
full‐cell
shows
capacity
226.2
400
cycles
2.0
,
confirming
material's
practicability.
Small,
Journal Year:
2023,
Volume and Issue:
20(4)
Published: Sept. 15, 2023
Abstract
The
rapid
evolution
of
smart
grid
system
urges
researchers
on
exploiting
systems
with
properties
high‐energy,
low‐cost,
and
eco‐friendly
beyond
lithium‐ion
batteries.
Under
the
circumstances,
sodium‐
potassium‐ion
batteries
semblable
work
mechanism
to
commercial
batteries,
hold
merits
cost‐effective
earth‐abundant.
As
a
result,
it
is
deemed
promising
candidate
for
large‐scale
energy
storage
devices.
Exploiting
appropriate
active
electrode
materials
in
center
spotlight
development
Metal
selenides
special
structures
relatively
high
theoretical
capacity
have
aroused
broad
interest
achieved
great
achievements.
To
push
smooth
metal
enhancement
electrochemical
performance
vital
grasp
inherent
mechanisms
these
materials.
Herein,
state‐of‐the‐art
challenges
are
summarized
discussed.
Meanwhile,
corresponding
future
directions
also
highlighted.
Chemical Communications,
Journal Year:
2024,
Volume and Issue:
60(54), P. 6860 - 6872
Published: Jan. 1, 2024
An
overview
of
our
endeavors
to
address
the
challenges
associated
with
metal
selenide-based
anode
materials
achieve
high
performance
for
sodium-ion
batteries.
ACS Applied Nano Materials,
Journal Year:
2024,
Volume and Issue:
7(10), P. 11530 - 11540
Published: May 11, 2024
It
is
necessary
to
optimize
the
electrocatalytic
activity
of
an
electrocatalyst
by
means
morphology
and
composition
regulation.
Herein,
Fe-doped
bimetallic
selenide
hierarchical
nanosheet
arrays
grown
on
nickel
foam
(Fe-NiCoSe/NiCoSe/NF)
are
obtained
for
overall
water
splitting.
The
Fe-NiCoSe/NiCoSe/NF
fabricated
selenizing
NiCoFe
Prussian
blue
analogue
(NiCoFe-PBA)
growing
a
NiCo-layered
double
hydroxide
(NiCo-LDH).
Benefiting
from
arrays,
synergistic
effect
selenides,
as
well
electronic
structure
rearrangement
caused
Fe-doping,
catalyst
exhibits
low
overpotentials
120
mV
hydrogen
evolution
reaction
(HER)
199
oxygen
(OER)
at
10
mA·cm–2
in
1.0
M
KOH.
In
addition,
when
used
bifunctional
splitting,
requires
cell
voltage
1.93
V
(1.82
V)
reach
100
(50
mA·cm–2).
Additionally,
prolonged
durability
lasting
150
h
mA·cm–2.
This
work
provides
reasonable
idea
designing
nanostructured
toward
splitting
regulating
composition.
