Batteries,
Год журнала:
2023,
Номер
9(8), С. 429 - 429
Опубликована: Авг. 17, 2023
With
the
merits
of
having
excellent
safety,
being
low
cost
and
environmentally
friendly,
zinc-ion
hybrid
supercapacitors
(ZHSCs)
are
expected
to
be
widely
used
in
large-scale
energy
storage
flexible
wearable
devices.
However,
limited
by
their
sluggish
kinetic
process,
ZHSCs
suffer
from
low-specific
capacity
poor
cycling
stability
at
high
cathode
mass
loading.
Herein,
a
novel
designed
oxygen-rich
hierarchical
porous
carbon
(HPOC)
is
obtained
one-step
strategy
synchronous
activation
templated
for
high-performance
ZHSCs.
The
fabricated
with
HPOCs
show
significant
improvement
Zn-ion
capability,
209.4
mAh
g−1
0.1
A
108.3
10
g−1.
Additionally,
excellent,
92.3%
retention
after
4000
cycles.
Furthermore,
an
impressive
areal
1.7
cm−2
achieved,
even
loading
12.5
mg
cm−2.
More
importantly,
quasi-solid
state
also
considerable
capability
(183.5
g−1)
density
178.0
Wh
kg−1.
This
promising
result
suggests
valuable
route
produce
functional
nanocarbon
materials
zinc
applications.
Coordination Chemistry Reviews,
Год журнала:
2024,
Номер
518, С. 216080 - 216080
Опубликована: Июль 14, 2024
Supercapacitors
have
garnered
significant
attention
in
recent
years
owing
to
their
exceptional
attributes,
such
as
high
power
density,
prolonged
cycle
stability,
and
the
capacity
fulfil
gap
between
traditional
capacitor
lithium-ion
battery.
Nanostructures
with
different
dimensions
(zero-dimensional,
0D;
one-dimensional,
1D;
two-dimensional,
2D;
three-dimensional,
3D)
were
employed
electrodes.
Such
material's
architecture
at
nanoscale
has
resulted
outstanding
electrochemical
characteristics,
contributing
development
of
high-performance
Supercapacitors.
Recent
advances
design
nanostructured
electrode
materials
for
highlighted
new
insight
into
structure
property
relationship
is
provided
this
authoritative
review.
Unique
classification
based
on
dimensionality,
namely,
0D,
1D,
2D
3D
was
emphasis
performance,
specific
capacitance,
energy
density
cyclability.
The
impact
nanostructures
key
Supercapacitor
properties
that
include
charge
transfer
kinetics,
diffusion,
rate
capability,
well
life
also
highlighted.
These
insights
serve
a
guidance
commercially
viable
applications
day
life,
instance,
drones
used
war-zones.
ACS Sustainable Chemistry & Engineering,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 8, 2024
N-doped
porous
carbon
materials
possess
abundant
pores
and
nitrogen
functionalities,
holding
significant
potential
for
supercapacitors.
However,
achieving
precise
control
of
the
pore
structure
to
enhance
electrochemical
performance
remains
challenging
in
large-scale
production
commercial
electrode
materials.
Herein,
Chinese
yam,
a
rhizome
plant
rich
dopamine,
is
selected
as
precursor
prepare
N,O-codoped
hierarchical
(N/O-PC-3)
via
one-step
carbonization
activation
process.
The
precisely
controlled
by
adjusting
degree
aggregation
zinc-containing
hydrolysates
biomass
through
synergistic
action
ZnCl2
(activating
agent)
NH4Cl
(nitrogen
source).
Due
its
micropore-dominant
structure,
high
(10.5
at.
%)
oxygen
(13.1
content,
along
with
good
electronic
conductivity
excellent
wettability,
N/O-PC-3
exhibits
remarkable
frequency
response,
an
ultrahigh
rate
up
5
V
s–1
gravimetric,
volumetric,
areal
capacitances
414
F
g–1,
311
cm–3,
23.8
μF
cm–2
at
1
A
respectively.
It
also
demonstrates
capability
(326
g–1
100
79%
capacitance
retention).
Even
mass
loading
15
mg
cm–2,
achieves
gravimetric
223
g–1.
assembled
symmetric
supercapacitor
delivers
energy
density
22.9
W
h
kg–1
power
102.9
kg–1,
making
it
highly
desirable
practical
application
storage.
Additionally,
this
work
offers
straightforward
approach
controlling
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(35), С. 46771 - 46788
Опубликована: Авг. 21, 2024
Electronic
skin
(e-skin)
is
considered
as
a
highly
promising
interface
for
human-computer
interaction
systems
and
wearable
electronic
devices.
Through
elaborate
design
assembly
of
various
materials,
it
possesses
multiple
characteristics
similar
to
human
skin,
including
remarkable
flexibility,
stretchability,
sensitivity
temperature
humidity,
biocompatibility,
efficient
interfacial
ion/electron
transport
capabilities.
Here,
we
innovatively
integrate
multifunctional
carbon
quantum
dots
(CQDs),
which
exhibit
conductivity,
antibacterial
properties,
ultraviolet
absorption,
fluorescence
emission,
with
poly(acrylic
acid)
glycerin
(Gly)
into
three-dimensional
network
structure
natural
goatskin
collagen
fibers.
top-down
strategy
enhanced
by
hydrogen
bond
reconstruction,
successfully
fabricated
novel
transparent
e-skin
(PAC-eSkin).
This
exhibited
significant
tensile
properties
(4.94
MPa
strength
263.42%
maximum
breaking
elongation),
while
also
possessing
Young's
modulus
(2.32
MPa).
It
noteworthy
that
the
functionalized
CQDs
used
was
derived
from
discarded
goat
hair,
addition
Gly
gave
PAC-eSkin
excellent
antifreezing
moisturizing
properties.
Due
presence
ultrasmall
CQDs,
creates
channels
within
PAC-eSkin,
could
rapidly
sense
motion
physiological
signals
(with
gauge
factor
(GF)
1.88).
Furthermore,
had
potential
replace
traditional
electrode
patches
real-time
monitoring
electrocardiogram,
electromyogram,
electrooculogram
signals,
higher
SNR
(signal-to-noise
ratio)
25.1
dB.
Additionally,
customizable
size
shape
offer
vast
possibilities
construction
single-electrode
triboelectric
nanogenerator
systems.
We
have
reason
believe
development
this
based
on
CQDs-functionalized
dermal
matrices
can
pave
new
way
innovations
in
human–computer
interfaces
their
sensing
application
diverse
scenarios.
ACS Applied Energy Materials,
Год журнала:
2024,
Номер
7(2), С. 469 - 478
Опубликована: Янв. 9, 2024
Under
the
background
of
current
promotion
global
green,
environmental
protection,
and
energy
conservation,
sustainable
conversion
low-cost
agricultural
waste
biomass
into
high
value-added
products
has
become
a
hot
topic.
Herein,
camellia
seed
shells
obtained
after
pressing
oil
are
used
to
prepare
porous
carbon
materials
with
specific
surface
area
(SSA)
excellent
electrochemical
properties
for
application
supercapacitors.
The
effects
different
chemical
activators
mass
ratios
on
pore
structure
shell-derived
activated
(CSSC)
were
investigated.
It
been
found
that
CSSC
by
KOH
presents
physical
performances,
structures
all
prepared
carbons
predominantly
combination
mesopores
micropores.
Especially,
owing
SSA
(1219
m2
g–1)
CSSC–KOH-1:3
material,
electrode
provides
an
outstanding
capacitance
305
F
g–1
at
density
0.5
A
g–1.
Furthermore,
symmetric
supercapacitor
assembled
electrodes
can
deliver
(15.37
W
h
kg–1)
power
(12.9
kW
kg–1),
it
still
maintain
cycling
stability
even
10,000
charge
discharge
processes.
Therefore,
this
work
significant
exploration
high-value
shell
preparation
high-performance
ACS symposium series,
Год журнала:
2024,
Номер
unknown, С. 3 - 42
Опубликована: Апрель 17, 2024
Carbon
quantum
dots
(CQDs)
belong
to
a
remarkable
category
of
nanocarbon
materials
with
unique
properties
because
their
nanoscale
dimensions.
These
nanocarbons
have
earned
significant
attention
exceptional
and
advantages,
making
them
versatile
in
wide
range
applications.
This
chapter
delves
into
the
fundamental
principles
underlying
CQDs,
along
synthetic
procedures
outstanding
characteristics.
characteristics
empower
precise
tuning
optical
electronic
properties,
setting
stage
for
diverse
Their
photoluminescence—combined
biocompatibility,
water
solubility,
various
surface
functional
groups—position
CQDs
as
crucial
components
fields
nanotechnology,
science,
medicine.
As
result,
this
highlights
broad
spectrum
applications
where
made
contributions
21st
century.
