Angewandte Chemie International Edition,
Год журнала:
2021,
Номер
60(52), С. 27013 - 27018
Опубликована: Окт. 9, 2021
Surface
terminations
of
two-dimensional
MXene
(Ti3
C2
Tx
)
considerably
impact
its
physicochemical
properties.
Commonly
used
etching
methods
usually
introduce
-F
surface
or
metallic
impurities
in
MXene.
We
present
a
new
molten-salt-assisted
electrochemical
method
to
synthesize
fluorine-free
Ti3
Cl2
.
Using
electrons
as
reaction
agents,
cathode
reduction
and
anode
can
be
spatially
isolated;
thus,
no
metallics
are
the
product.
The
situ
modified
from
-Cl
-O
and/or
-S,
which
shortens
modification
steps
enriches
variety
terminations.
obtained
-O-terminated
excellent
electrode
materials
for
supercapacitors,
exhibiting
capacitances
225
F
g-1
at
1.0
Ag-1
,
good
rate
performance
(91.1
%
10
),
capacitance
retention
(100
after
10000
charge/discharge
cycles
is
superior
multi-layered
prepared
by
other
methods.
Advanced Materials,
Год журнала:
2021,
Номер
33(39)
Опубликована: Авг. 16, 2021
Abstract
Since
their
discovery
in
2011,
the
number
of
2D
transition
metal
carbides
and
nitrides
(MXenes)
has
steadily
increased.
Currently
more
than
40
MXene
compositions
exist.
The
ultimate
is
far
greater
time
they
may
develop
into
largest
family
materials
known.
MXenes’
unique
properties,
such
as
metal‐like
electrical
conductivity
reaching
≈20
000
S
cm
−1
,
render
them
quite
useful
a
large
applications,
including
energy
storage,
optoelectronic,
biomedical,
communications,
environmental.
papers
patents
published
been
growing
quickly.
first
generation
synthesized
using
selective
etching
layers
from
MAX
phases,
layered
carbonitrides
hydrofluoric
acid.
then,
multiple
synthesis
approaches
have
developed,
mixture
fluoride
salts
various
acids,
non‐aqueous
etchants,
halogens,
molten
salts,
allowing
for
new
MXenes
with
better
control
over
surface
chemistries.
Herein,
brief
historical
overview
10
years
research
perspective
on
future
development
are
provided.
fact
that
production
readily
scalable
aqueous
environments,
high
yields
bodes
well
commercialization.
Advanced Materials,
Год журнала:
2022,
Номер
34(23)
Опубликована: Март 9, 2022
Abstract
2D
materials
show
many
particular
properties,
such
as
high
surface‐to‐volume
ratio,
anisotropic
degree,
and
adjustable
chemical
functionality.
These
unique
properties
in
have
sparked
immense
interest
due
to
their
applications
photocatalytic
systems,
resulting
significantly
enhanced
light
capture,
charge‐transfer
kinetics,
surface
reaction.
Herein,
the
research
progress
photocatalysts
based
on
varied
compositions
functions,
followed
by
specific
modification
strategies,
is
introduced.
Fundamental
principles
focusing
harvesting,
charge
separation,
molecular
adsorption/activation
2D‐material‐based
system
are
systemically
explored.
The
examples
described
here
detail
use
of
various
energy‐conversion
including
water
splitting,
carbon
dioxide
reduction,
nitrogen
fixation,
hydrogen
peroxide
production,
organic
synthesis.
Finally,
elaborating
challenges
possible
solutions
for
developing
these
materials,
review
expected
provide
some
inspiration
future
used
efficient
energy
conversions.
ACS Nano,
Год журнала:
2021,
Номер
15(6), С. 9746 - 9758
Опубликована: Июнь 3, 2021
Flexible,
breathable,
and
degradable
pressure
sensors
with
excellent
sensing
performance
are
drawing
tremendous
attention
for
various
practical
applications
in
wearable
artificial
skins,
healthcare
monitoring,
intelligence
due
to
their
flexibility,
breathability,
lightweight,
decreased
electronic
rubbish,
environmentally
friendly
impact.
However,
traditional
plastic
or
elastomer
substrates
impermeability,
uncomfortableness,
mechanical
mismatches,
nondegradability
greatly
restricted
applications.
Therefore,
the
fabrication
of
such
high
facile
degradability,
breathability
is
still
a
critical
challenge
highly
desired.
Herein,
we
present
wearable,
degradable,
sensitive
MXene/protein
nanocomposites-based
sensor.
The
fabricated
MXene/protein-based
sensor
assembled
from
breathable
conductive
MXene
coated
silk
fibroin
nanofiber
(MXene-SF)
membrane
patterned
ink-printed
(MXene
ink-SF)
interdigitated
electrode,
which
can
serve
as
layer
electrode
layer,
respectively.
exhibits
wide
range
(up
39.3
kPa),
sensitivity
(298.4
kPa-1
1.4-15.7
kPa;
171.9
15.7-39.3
fast
response/recovery
time
(7/16
ms),
reliable
cycling
stability
over
10
000
cycles,
good
biocompatibility,
robust
degradability.
Furthermore,
it
shows
great
monitoring
human
psychological
signals,
acting
an
skin
quantitative
illustration
distribution,
wireless
biomonitoring
real
time.
Considering
biodegradable
features,
may
become
promising
find
potential
smart
motion
detection,
disease
diagnosis,
human-machine
interaction.
Advanced Functional Materials,
Год журнала:
2023,
Номер
33(14)
Опубликована: Янв. 18, 2023
Abstract
Supercapacitors
can
harvest
electrical
energy
from
intermittent
sources
and
transfer
it
quickly,
but
their
specific
must
be
raised
if
they
are
applied
to
efficiently
power
wearable
flexible
electronics,
as
well
larger
equipment.
However,
the
remaining
big
gap
between
lab
research
practical
applications
seriously
hinders
further
progress
of
advanced
supercapacitors,
especially
for
electrode
materials.
Consequently,
a
commercial/usable
perspective,
clear
guideline
commercialization
is
highly
desired
bringing
supercapacitors
basic
into
reality.
This
review
focuses
on
key
factors
summarizes
recent
in
field
outlines
perspectives
future
research.
First,
several
storage
mechanisms
illustrated
building
better
supercapacitors.
Then,
up‐to‐date
achievements
progresses
smart
methods
toward
high‐energy
effective
strategies
commercial‐level
mass‐loading
high
packing
density
electrodes
summarized
commented
upon.
Also,
integrated
systems
application
fields
commercial
also
highlighted.
Subsequently,
directions
presented
here
guide
Energy & Environmental Science,
Год журнала:
2021,
Номер
14(4), С. 2114 - 2157
Опубликована: Янв. 1, 2021
The
mechanisms,
figures
of
merit,
and
systems
for
wearable
power
generation
are
reviewed
in
this
article.
Future
perspectives
lie
breakthrough
technologies
fiber
electronics,
fully
printable,
flexible
SoC,
IoT-enabled
self-awareness
systems.
Journal of Materials Chemistry A,
Год журнала:
2022,
Номер
10(25), С. 13190 - 13240
Опубликована: Янв. 1, 2022
Systematic
survey
on
the
fabrication
and
electrochemical
performance
of
most
promising
classes
pseudocapacitive/battery-type
electrode
materials
for
supercapacitors.
