Advanced Functional Materials,
Год журнала:
2023,
Номер
33(33)
Опубликована: Май 5, 2023
Abstract
Antimony
(Sb)
is
a
potential
electrode
material
for
sodium
(Na)
storage
due
to
its
high
theoretical
capacity
of
660
mAh
g
−1
.
Yet,
the
alloy/dealloy
reaction
between
Na
and
Sb
induces
detrimental
structural
strain
that
inevitably
leads
failure,
further
resulting
in
deteriorated
rate
performance
cycle
life.
Herein,
inspired
by
multilayered
structure
pine
trees,
3D
hierarchical
tin
(Sn)‐doped
nanoarray
coated
with
thin
carbon
(C)
layer
(Sb(Sn)@C)
developed.
Density
functional
theory
calculation
results
suggest
Sb(Sn)@C
offers
better
kinetic
properties
diffusion,
lower
volume
expansion
upon
intercalation
as
compared
counterparts
without
Sn
dopant
or
coating.
Moreover,
simulation
based
on
finite
element
analysis
unique
construction
not
only
provides
highly
efficient
+
utilization,
but
also
builds
uniform
von
Mises
stress
distribution
effectively
confines
induced
during
insertion.
This
verified
nanoindentation
measurement
shows
higher
elastic
modulus
hardness
than
Sb(Sn)
pure
Sb,
indicating
best
mechanical
stability.
As
expected,
achieves
excellent
electrochemical
capability
reversible
capacity,
enhanced
cyclability,
remarkable
performance.
Chemical Society Reviews,
Год журнала:
2024,
Номер
53(13), С. 7202 - 7298
Опубликована: Янв. 1, 2024
The
growing
global
energy
demand
necessitates
the
development
of
renewable
solutions
to
mitigate
greenhouse
gas
emissions
and
air
pollution.
To
efficiently
utilize
yet
intermittent
sources
such
as
solar
wind
power,
there
is
a
critical
need
for
large-scale
storage
systems
(EES)
with
high
electrochemical
performance.
While
lithium-ion
batteries
(LIBs)
have
been
successfully
used
EES,
surging
price,
coupled
limited
supply
crucial
metals
like
lithium
cobalt,
raised
concerns
about
future
sustainability.
In
this
context,
potassium-ion
(PIBs)
emerged
promising
alternatives
commercial
LIBs.
Leveraging
low
cost
potassium
resources,
abundant
natural
reserves,
similar
chemical
properties
potassium,
PIBs
exhibit
excellent
ion
transport
kinetics
in
electrolytes.
This
review
starts
from
fundamental
principles
structural
regulation
PIBs,
offering
comprehensive
overview
their
current
research
status.
It
covers
cathode
materials,
anode
electrolytes,
binders,
separators,
combining
insights
full
battery
performance,
degradation
mechanisms,
Heteroatom
doping
can
endow
MXenes
with
various
new
or
improved
electromagnetic,
physicochemical,
optical,
and
structural
properties.
This
greatly
extends
the
arsenal
of
materials
their
potential
for
a
spectrum
applications.
article
comprehensively
critically
discusses
syntheses,
properties,
emerging
applications
growing
family
heteroatom-doped
materials.
First,
strategies,
synthesis
methods,
theoretical
simulations
high-performance
are
summarized.
In
order
to
achieve
materials,
mechanism
atomic
element
from
three
aspects
lattice
optimization,
functional
substitution,
interface
modification
is
analyzed
summarized,
aiming
provide
clues
developing
controllable
synthetic
routes.
The
mechanisms
underlying
advantageous
uses
energy
storage,
catalysis,
sensors,
environmental
purification
biomedicine
highlighted.
Finally,
future
opportunities
challenges
study
application
multifunctional
presented.
work
could
open
up
prospects
development
MXenes.
Batteries,
Год журнала:
2023,
Номер
9(2), С. 126 - 126
Опубликована: Фев. 10, 2023
In
the
past
decade,
MXenes,
a
new
class
of
advanced
functional
2D
nanomaterials,
have
emerged
among
numerous
types
electrode
materials
for
electrochemical
energy
storage
devices.
MXene
and
their
composites
opened
up
an
interesting
opportunity
in
field
materials,
owing
to
transition
metal
nitrides/carbides/carbonitride-based
unique
layered
structures,
higher
electrical
thermal
conductivity,
charge
carrier
mobility,
high
negative
zeta-potential,
mechanical
properties,
tunable
bandgap,
superior
hydrophilicity,
metallic
nature
rich
surface
chemistry,
which
enhance
number
active
redox
sites
on
short
ion
diffusion
path.
However,
case
applications,
unavoidable
problem
aggregation
nanosheet
restacking
significantly
reduces
accessibility
electrolyte
ions.
Currently,
there
is
research
efforts
devoted
solutions
order
avoid
these
deficits.
This
Review
complies
extensively
with
recent
advances
application
MXene-based
devices
such
as
batteries
supercapacitors.
Particular
attention
paid
understanding
relation
MXenes
chemical
composition,
morphology
performances.
Moreover,
challenges
composited
commercial
are
considered
ways
overcome
drawbacks
provided.
Finally,
opportunities
given
future
novel
highlighted.
Single‐atom
catalysts
(SACs)
consist
of
isolated
metal
sites
on
the
support
through
stable
coordination
bond,
which
usually
have
high
catalytic
activity
and
selectivity.
With
large
surface
area
electron
tunability,
metallic
carbides,
nitrides,
or
carbonic
nitrides
(MXenes)
are
suitable
carriers
for
supporting
single‐metal
atoms.
The
abundant
surface‐functional
groups
vacancy
defects
MXenes
ideal
anchoring
Herein,
advanced
synthesis
characterization
methods
MXene‐based
SACs
first
introduced.
Three
strategies
(adsorption
at
functional
groups,
vacancies,
terminating
group
vacancies)
appear
to
be
feasible
in
ensuring
non‐aggregation
atoms,
attributed
strong
bonding
between
atoms
carrier.
applications
electrocatalysis
(including
hydrogen
evolution
reaction,
oxygen
reduction
carbon
dioxide
nitrogen
reaction),
energy
storage
Li‐ion
batteries,
metal–air
supercapacitors),
sensors
gas
biological
sensors)
fundamentally
reviewed.
Finally,
own
insight
current
challenges
prospects
is
presented.
Advanced Functional Materials,
Год журнала:
2022,
Номер
33(9)
Опубликована: Дек. 26, 2022
Abstract
As
one
of
the
“miracle
materials”
in
21st
century,
aerogels
with
ultra‐low
weight
and
remarkable
mechanical
performance
have
emerged
shown
incredible
immunity
to
harsh
working
environments,
attracting
substantial
research
interests
across
a
wide
range
areas.
Recently,
exploitation
MXene
nanosheets
into
represents
new
focus
field
materials
science,
on
account
their
unique
structures
outstanding
properties.
In
this
review,
aim
is
provide
timely
insightful
overview
for
recent
advances
fabrication,
performance,
application
MXene‐based
aerogels.
The
main
strategies
constructing
aerogels,
directly
from
MXene‐dispersion
or
presence
other
functional
components,
are
summarized.
Furthermore,
desirable
related
applications
areas
including
electromagnetic
management,
sensors,
solar
steam
generators,
energy
storage
highlighted.
A
thorough
investigation
comparison
mechanical,
electrical,
sensing,
properties
performed
understand
structure‐property
relationships.
At
last,
study
concluded
summary
outlook
section
future
development
as
well
challenges
that
remained,
thus
bringing
opportunities
material
engineering
Nano Letters,
Год журнала:
2023,
Номер
23(11), С. 5217 - 5226
Опубликована: Май 18, 2023
MXenes
are
emerging
2D
materials
that
have
gained
great
attention
because
of
their
unique
physical-chemical
properties.
However,
the
wide
application
is
prohibited
by
high
cost
and
environmentally
harmful
synthesis
process.
Here
a
fluoride-
acid-free
physical
vacuum
distillation
strategy
proposed
to
directly
synthesize
series
MXenes.
Specifically,
introducing
low-boiling-point
element
into
MAX
subsequently
evaporating
A
elements
via
distillation,
fluoride-free
(Ti3C2Tx,
Nb2CTx,
Nb4C3Tx,
Ta2CTx,
Ti2NTx,
Ti3CNTx,
etc.)
fabricated.
This
green
one-step
process
without
any
acid/alkaline
involved
with
all
reactions
inside
tube
furnace,
avoiding
contamination
external
environments.
Besides,
synthetic
temperature
controlled
regulate
layered
structures
specific
surface
areas
Accordingly,
synthesized
Ti3C2Tx
MXene
exhibits
improved
sodium
storage
performance.
method
may
provide
an
alternative
for
scalable
production
other
materials.
Advanced Materials,
Год журнала:
2023,
Номер
36(3)
Опубликована: Июнь 17, 2023
Abstract
In
recent
years,
the
emergence
of
novel
2D
monoelemental
materials
(Xenes),
e.g.,
graphdiyne,
borophene,
phosphorene,
antimonene,
bismuthene,
and
stanene,
has
exhibited
unprecedented
potentials
for
their
versatile
applications
as
well
addressing
new
discoveries
in
fundamental
science.
Owing
to
unique
physicochemical,
optical,
electronic
properties,
emerging
Xenes
have
been
regarded
promising
candidates
community
single‐atom
catalysts
(SACs)
active
sites
or
support
matrixes
significant
improvement
intrinsic
activity
selectivity.
order
comprehensively
understand
relationships
between
structure
property
Xene‐based
SACs,
this
review
represents
a
comprehensive
summary
from
theoretical
predictions
experimental
investigations.
Firstly,
calculations
regarding
both
anchoring
on
doping/substituting
heteroatoms
at
are
briefly
summarized.
Secondly,
controlled
synthesis
precise
characterization
presented
SACs.
Finally,
current
challenges
future
opportunities
development
SACs
highlighted.