Nano Letters,
Год журнала:
2023,
Номер
23(8), С. 3592 - 3598
Опубликована: Апрель 10, 2023
MXenes
and
sulfurized
polyacrylonitrile
(S-PAN)
are
emerging
as
possible
contenders
to
resolve
the
polysulfide
dissolution
volumetric
expansion
issues
in
sodium-sulfur
batteries.
Herein,
we
explore
interactions
between
Ti3C2Tx
S-PAN
with
traditional
binders
such
polyvinylidene
difluoride
(PVDF),
poly(acrylic
acid)
(PAA),
carboxymethyl
cellulose
(CMC)
Na-S
batteries
for
first
time.
We
hypothesize
that
linearity
polarity
of
binder
significantly
influence
dispersion
over
Ti3C2Tx.
The
three-dimensional
polar
CMC
resulted
better
contact
surface
area
both
Moreover,
improved
binding
discharge
products
effectively
traps
them
prevents
unwanted
shuttling.
Consequently,
battery
using
displayed
a
high
initial
capacity
1282
mAh/g(s)
at
0.2
C
low
fading
0.092%
per
cycle
300
cycles.
This
work
highlights
importance
understanding
MXene-binder
sulfur
cathodes.
Nano Letters,
Год журнала:
2023,
Номер
23(12), С. 5762 - 5769
Опубликована: Июнь 13, 2023
Lithium-sulfur
batteries
(LSBs)
are
known
to
be
potential
next-generation
energy
storage
devices.
Recently,
our
group
reported
an
LSB
cathode
made
using
sulfur
spheres
that
has
been
spherically
templated
by
MXene
nanosheets
decorated
with
CoSe2
nanoparticles,
forming
a
"loose-templating"
configuration.
It
was
postulated
the
minimal
restacking
of
outer
nanoparticle-decorated
layer
helps
enable
facile
ionic
transport.
However,
as
do
not
adhere
conformally
internal
sphere's
surface,
such
configuration
can
controversial,
thus
requiring
more
systematic
understanding.
In
this
work,
we
report
and
quantify
for
first
time
independent
dependent
variables
involved
in
morphology,
allowing
us
identify
having
smaller
nanoparticles
resulted
better
Li+
ion
transport
enhanced
electrochemical
performances.
The
optimized
structure
exhibited
initial
specific
capacity
1274
mAh/g
0.06%
decay
rate
per
cycle
at
0.5
C
over
1000
cycles
LSBs.
Inorganic Chemistry,
Год журнала:
2024,
Номер
63(19), С. 8853 - 8862
Опубликована: Май 1, 2024
Li–S
batteries
are
hampered
by
problems
with
their
cathodes
and
anodes
simultaneously.
The
improvement
of
needs
to
consider
both
the
anode
cathode.
Herein,
a
Bi2Se3@MXene
composite
is
prepared
for
first
time
rapidly
growing
Bi2Se3
nanodots
on
two-dimensional
(2D)
MXene
nanosheets
at
room
temperature
through
simply
adding
high-reactive
hydroxyethylthioselenide
in
Bi3+/MXene
aqueous
solution.
exhibits
2D
structure
due
template
effect
MXene.
can
not
only
facilitate
conversion
lithium
polysulfides
(LiPSs)
but
also
inhibit
shuttling
S
cathode
its
catalytic
adsorption
force
LiPSs.
be
used
as
an
interfacial
lithiophilic
layer
Li
dendrite
growth
metal
anode.
Theoretical
calculations
reveal
that
effectively
boost
ability
LiPSs,
accelerate
electron
transport.
Under
bidirectional
regulation
cathode,
battery
shows
enhanced
electrochemical
performance.
The
pursuit
of
efficient
host
materials
to
address
the
sluggish
redox
kinetics
sulfur
species
has
been
a
longstanding
challenge
in
advancing
practical
application
lithium-sulfur
batteries.
In
this
study,
amorphous
carbon
layer
loaded
with
ultrafine
CoP
nanoparticles
prepared
by
one-step
situ
carbonization/phosphating
method
enhance
inhibition
2D
black
phosphorus
(BP)
on
LiPSs
shuttle.
coating
facilitates
accelerated
electron/ion
transport,
enabling
active
involvement
BP
conversion
soluble
lithium
polysulfides
(LiPSs).
Concurrently,
ultra-fine
chemical
anchoring
ability
and
introduce
additional
catalytic
sites.
As
result,
S@BP@C-CoP
electrodes
demonstrate
exemplary
cycling
stability
(with
minimal
capacity
decay
0.054
%
over
500
cycles
at
1
C)
superior
rate
performance
(607.1
mAh
g
Inorganic Chemistry,
Год журнала:
2024,
Номер
63(23), С. 10823 - 10831
Опубликована: Май 28, 2024
The
weak
chemical
immobilization
ability
and
poor
catalytic
effect
of
MXene
inhibit
its
application
in
lithium–sulfur
(Li–S)
batteries.
Herein,
a
novel
MXene@FeCoNiP
composite
is
rationally
developed
utilized
as
sulfur
host
for
Li–S
In
this
well-designed
MXene-based
nanostructure,
the
introduction
FeCoNiP
interlayer
nanosheets
can
not
only
effectively
restacking
but
also
act
an
accelerator
adsorption
catalysis
polysulfides
to
restrain
shuttling
facilitate
transformation
polysulfides.
existence
two-dimensional
provides
more
active
sites
improves
conductivity,
which
beneficial
accelerating
reaction
kinetics.
Thus,
as-prepared
composites
achieve
outstanding
performance
This
work
opportunity
construct
ideal
with
triple
"conductivity-adsorption-catalysis".
Industrial & Engineering Chemistry Research,
Год журнала:
2023,
Номер
62(19), С. 7297 - 7335
Опубликована: Май 5, 2023
With
the
rapid
development
of
economics
and
society,
water
pollution
shortage
problem
is
becoming
more
severe.
Excellent
3D
separation
functional
materials
for
efficient
purification
are
highly
required,
but
their
design
fabrication
still
remain
a
big
challenge
at
present.
Benefiting
from
distinct
advantages,
such
as
2D
nanolamellar
structure,
high
hydrophilicity,
abundant
groups,
desirable
mechanical
strength,
transition
metal
carbide/nitride
materials,
MXenes,
have
afforded
new
platform
creation
treatment
materials.
This
review
summarizes
recent
progress
in
MXene-based
toward
wastewater
reclamation.
In
this
review,
common
approaches
MXene
structures
emphatically
summarized
developments
focused
on
capacitive
deionization
(CDI),
solar
desalination,
adsorption,
photocatalytic
degradation
pollutants
critically
reviewed.
Besides,
impact
structural
material
performance
outlined.
The
critical
challenges
aforementioned
fields
also
highlighted.
Finally,
we
provide
brief
perspective
future
practical
effluent
treatments.
Energy & Fuels,
Год журнала:
2024,
Номер
38(15), С. 13837 - 13857
Опубликована: Июль 13, 2024
Lithium–sulfur
batteries
(LSBs)
are
a
new
type
of
energy
storage
system
with
great
potential,
which
has
an
ultrahigh
density
2600
Wh
kg–1.
However,
the
polysulfide
shuttle
and
dendrite
growth
have
seriously
impeded
practical
applications.
As
two-dimensional
(2D)
transition
metal
carbide/nitride,
MXene
possesses
advantages
conductivity,
structural
diversity,
abundant
terminal
groups.
Thus,
it
is
beneficial
to
regulate
dynamic
process
ions,
make
widely
applied
in
LSBs.
Guided
by
multifunction
LSBs,
this
work
summarizes
application
for
cathode
construction,
separator
modification,
anode
protection,
electrolyte
regulation.
Recent
related
works
reviewed
from
aspects
MXene-based
morphology
adjustment,
element
doping,
surface
composite
material
construction.
Finally,
challenges
prospects
prospected.
