Angewandte Chemie International Edition,
Год журнала:
2021,
Номер
61(7)
Опубликована: Дек. 10, 2021
The
practical
application
of
lithium-sulfur
batteries
is
still
limited
by
the
lithium
polysulfides
(LiPSs)
shuttling
effect
on
S
cathode
and
uncontrollable
Li-dendrite
growth
Li
anode.
Herein,
elaborately
designed
WSe2
flakelets
immobilized
N-doped
graphene
(WSe2
/NG)
with
abundant
active
sites
are
employed
to
be
a
dual-functional
host
for
satisfying
both
anode
synchronously.
On
cathode,
/NG
strong
interaction
towards
LiPSs
can
act
as
redox
accelerator
promote
bidirectional
conversion
LiPSs.
anode,
excellent
lithiophilic
features
regulate
uniform
plating/stripping
mitigate
dendrite.
Taking
advantage
these
merits,
assembled
Li-S
full
exhibit
remarkable
rate
performance
stable
cycling
stability
even
at
higher
sulfur
loading
10.5
mg
cm-2
negative
positive
electrode
capacity
(N/P)
ratio
1.4
:
1.
ACS Energy Letters,
Год журнала:
2021,
Номер
7(1), С. 78 - 96
Опубликована: Дек. 3, 2021
Transition-metal
carbides
and
nitrides
(MXenes)
have
attracted
significant
interest
owing
to
their
desirable
properties,
abundance,
high
electrocatalytic
activity.
Tremendous
studies
demonstrated
the
potential
of
MXenes
for
energy
conversion
storage.
However,
further
development
this
must
address
various
aspects
MXenes,
including
finite
modification
strategies,
undefined
reaction
mechanisms,
working
life
cycle,
additional
untapped
applications.
In
Focus
Review,
we
summarize
most
recent
progress
in
applications
general
guidelines
rational
design
MXene
structures.
The
coupling
mixed-dimensional
nanomaterials
introduction
single
atoms
are
discussed
production
hydrogen,
ammonia,
multi-carbon
compounds,
as
well
storage
addition,
situ
characterization
tools
briefly
introduced
a
means
shedding
light
on
MXenes'
chemical
Finally,
an
outlook
future
opportunities
is
provided
stimulate
discussion
research
into
material
synthesis
mechanisms.
ACS Applied Materials & Interfaces,
Год журнала:
2021,
Номер
13(39), С. 46938 - 46950
Опубликована: Сен. 24, 2021
Smart
response
hydrogel
has
a
broad
application
prospect
in
human
health
real-time
monitoring
due
to
its
responses
variety
of
stimuli.
In
this
study,
we
developed
novel
smart
dressing
based
on
conductive
MXene
nanosheets
and
temperature-sensitive
PNIPAm
polymer.
γ-Methacryloxypropyltrimethoxysilane
(KH570)
was
selected
functionalize
the
surface
further
improve
interface
compatibility
between
PNIPAm.
Our
prepared
K-M/PNIPAm
found
have
strain-sensitive
property,
as
well
respond
NIR
phase
change
volume
change.
When
applied
strain
flexible
sensor,
exhibited
high
sensitivity
with
gauge
factor
(GF)
4.491,
working
range
≈250%,
fast
∼160
ms,
good
cycle
stability
(i.e.,
3000
s
at
20%
strain).
Besides,
can
be
used
an
efficient
light-controlled
drug
release
carrier
achieve
on-demand
release.
This
work
paved
way
for
NIR-controlled
functions.
Angewandte Chemie International Edition,
Год журнала:
2021,
Номер
61(7)
Опубликована: Дек. 10, 2021
The
practical
application
of
lithium-sulfur
batteries
is
still
limited
by
the
lithium
polysulfides
(LiPSs)
shuttling
effect
on
S
cathode
and
uncontrollable
Li-dendrite
growth
Li
anode.
Herein,
elaborately
designed
WSe2
flakelets
immobilized
N-doped
graphene
(WSe2
/NG)
with
abundant
active
sites
are
employed
to
be
a
dual-functional
host
for
satisfying
both
anode
synchronously.
On
cathode,
/NG
strong
interaction
towards
LiPSs
can
act
as
redox
accelerator
promote
bidirectional
conversion
LiPSs.
anode,
excellent
lithiophilic
features
regulate
uniform
plating/stripping
mitigate
dendrite.
Taking
advantage
these
merits,
assembled
Li-S
full
exhibit
remarkable
rate
performance
stable
cycling
stability
even
at
higher
sulfur
loading
10.5
mg
cm-2
negative
positive
electrode
capacity
(N/P)
ratio
1.4
:
1.
