Energy & Fuels,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 24, 2024
This
minireview
revisits
various
biomass-derived
carbon
composites
with
metal
oxides,
layered
double
hydroxides,
biopolymers,
and
the
use
of
ionic
liquids
as
electrolytes
for
green
supercapacitors.
These
materials
are
abundant,
stable,
nontoxic,
offer
high
surface
area,
provide
electrolyte
accessibility
due
to
their
porous
architecture,
have
excellent
electrical
conductivity.
Due
environmental
concerns
diminishing
supply
fossil
fuels,
electrochemical
energy
storage
devices
gained
significant
attention
in
recent
years.
Supercapacitors
(SCs)
hold
a
position
enhanced
power
density
compared
those
other
devices.
However,
utilize
SCs
effectively
across
applications,
performance
must
be
improved.
Electronic
integral
daily
life
but
can
pose
hazards
when
discarded
through
conventional
landfill
or
incineration
methods.
is
because
these
often
contain
harmful
chemicals,
such
sulfur,
cyanide,
fluorine
groups.
To
tackle
this
issue,
there
increasing
interest
developing
supercapacitor
components,
electrodes,
electrolytes,
binders,
conductive
substrates,
that
safe
dispose
no
hazards.
Since
electrode
crucial
supercapacitor's
performance,
focus
devoted
from
clean
renewable
sources,
biopolymers.
In
fact,
ecofriendly
electrodes
advance
technologies
well.
Energy Materials,
Journal Year:
2025,
Volume and Issue:
5(8)
Published: April 21, 2025
Emerging
Zinc-ion
hybrid
supercapacitors
(ZHSCs)
are
being
vigorously
pursued
due
to
their
sustainability,
economic
efficiency,
high
safety
and
excellent
theoretical
electrochemical
properties.
As
a
significant
element
in
the
advancement
of
ZHSCs,
carbonaceous
materials
can
be
utilized
for
fabricating
cathode
electrolyte
protecting
Zinc
anode.
Despite
advancements,
challenges
notably
persist
form
unsatisfactory
rate
performance,
scarcity
active
sites,
undesirable
cycling
stability
within
cathodes.
Here,
this
mini-review
thoroughly
expounds
on
recent
progress
with
different
dimensions
corresponding
synthesis
strategies.
The
complexity
structure,
morphology,
relevant
properties
sophisticated
employed
contemporary
devices
is
discussed.
Besides,
we
elaborate
strategies
modifying
these
achieve
optimal
characteristics.
Finally,
assessment
existing
prospects
ZHSCs
explored.
We
anticipate
that
insights
presented
herein
pave
way
developing
materials,
heading
toward
future-generation
energy
storage
devices.
Simultaneous
detection
of
chlorpyrifos
(CPF)
and
glyphosate
(Glyp),
two
widely
used
organophosphate
pesticides,
remains
a
significant
challenge
for
current
electrochemical
sensors.
This
study
addresses
that
by
developing
high-performance,
cost-effective
photoelectrochemical
sensor
capable
detecting
both
pesticides
either
individually
or
simultaneously.
The
is
based
on
graphene-incorporated
vanadium-silver
metal
oxide/metal
sulfide
nanocomposite
(Gr/V2O5-Ag2O@VS4-Ag2S,
denoted
GVA)
synthesized
through
one-step
hydrothermal
process.
GVA
further
modified
with
gold
nanoparticles
(AuNPs)
integrated
onto
an
ITO
substrate,
yielding
the
GVA@AuNPs/ITO
electrode.
Compared
to
unmodified
electrode,
electrode
demonstrated
significantly
enhanced
sensitivity
simultaneous
CPF
Glyp,
as
confirmed
various
electroanalytical
techniques.
Furthermore,
under
sunlight
irradiation,
photon-assisted
exhibited
superior
sensing
performance
broad
linear
ranges,
attributed
increased
accessibility
electroactive
sites,
electron
transfer
kinetics,
improved
interfacial
charge
capability.
In
addition
its
high
sensitivity,
showed
excellent
selectivity,
reproducibility,
stability,
even
in
presence
potentially
interfering
molecules.
Finally,
real
sample
analyses
involving
fruit
samples
(apple,
orange,
pineapple),
achieved
recovery
rates
98
99%
respectively.
Advanced Energy Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 13, 2025
Abstract
Aqueous
zinc‐ion
hybrid
capacitors
(ZIHCs)
have
emerged
as
a
sustainable
energy
storage
technology.
However,
the
slow
diffusion
of
large
solvated
Zn
2+
within
nanopores
and
restriction
on
electric
double
layer
(EDL)
thickness
limit
spatial
charge
density
in
carbon
electrodes.
Herein,
multi‐channel
porous
nanofibers
(MC‐PCNFs)
are
designed
with
customized
porosity
high‐charge‐density
interfaces
to
facilitate
rapid
[Zn(H
2
O)
6
]
desolvation
compact
EDL
formation.
The
hierarchical
hollow
structure
maximizes
ion
accessibility,
while
precisely
tuned
1.07
nm
pores
enable
direct
adsorption
onto
catalytic
sites,
significantly
reducing
barrier.
resulting
ZIHCs
achieve
high
reversible
capacity
221
mAh
g
−1
,
battery‐level
170.2
Wh
kg
(based
cathode
materials),
outstanding
long‐term
cycling
stability
(>90,000
cycles,
98.7%
retention),
practically
areal
capacities.
Through
in/ex
situ
spectroscopy,
theoretical
calculations,
kinetic
analysis,
electrochemical
quartz
crystal
microbalance
(EQCM)
interfacial
mechanisms
comprehensively
elucidated.
This
study
provides
scalable
effective
strategy
for
engineering,
paving
way
next‐generation
high‐energy,
long‐cycle‐life
ZIHCs.
