ChemCatChem,
Journal Year:
2024,
Volume and Issue:
16(5)
Published: Jan. 5, 2024
Abstract
Highly
active
and
stable
oxygen
evolution
reaction
(OER)
catalysts
are
crucial
for
the
large‐scale
application
of
proton
exchange
membrane
water
electrolyzers.
However,
dynamic
reconfiguration
catalyst
surface
structure
centers
is
still
undefined,
which
greatly
hinders
development
efficient
OER
catalysts.
Herein,
we
report
an
Ir
0.3
Ru
0.7
O
x
/C
with
a
facile
low‐temperature
synthesis
route,
can
reach
10
mA
cm
−2
at
overpotential
217
mV
Tafel
slope
as
low
39.4
dec
−1
,
yields
mass
activity
61
times
that
commercial
IrO
2
300
mV.
The
lattice
RuO
stabilized
by
introduction
species,
thus
promoting
durability.
Further
in
situ
Raman
reveals
emerges
species
high
potentials,
Ru−O
bonding
interactions
enhanced
regulation,
stabilizing
solvation
potentials
accelerating
nucleophilic
attack
molecules,
leading
to
improved
performance.
This
work
deepens
fundamental
understanding
offers
effective
way
advance
utilization
Ru‐based
Interdisciplinary materials,
Journal Year:
2024,
Volume and Issue:
3(1), P. 74 - 86
Published: Jan. 1, 2024
Abstract
Single‐atom
materials
(SAMs)
have
become
one
of
the
most
important
power
sources
to
push
field
energy
conversion
forward.
Among
main
types
energy,
including
thermal
electrical
solar
and
biomass
SAMs
realized
ultra‐high
efficiency
show
an
appealing
future
in
practical
application.
More
than
high
activity,
uniform
active
sites
also
provide
a
convincible
model
for
chemists
design
comprehend
mechanism
behind
phenomenon.
Therefore,
we
presented
insightful
review
application
single‐atom
material
conversion.
The
challenges
(e.g.,
accurate
synthesis
application)
directions
machine
learning
efficient
design)
applications
are
included,
aiming
guidance
research
next
step.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(17)
Published: Jan. 5, 2024
Abstract
Aqueous
zinc‐based
energy
storage
systems
(Zn‐ESSs)
with
intrinsic
safety
and
good
electrochemical
performance
are
promising
power
suppliers
for
flexible
electronics,
whereas
unstable
zinc
anodes
especially
in
Zn‐ESSs
pose
a
challenge.
Herein,
self‐assembled
robust
interfacial
layer
to
achieve
stable
non‐flexible
is
reported.
Specifically,
their
slowly‐released
Zn
2+
simultaneously
interact
tannic
acid
molecules
ethanol–water
solutions,
triggering
the
self‐assembly
of
acid/Zn
complex
(CIL)
that
firmly
anchors
on
anodes.
The
CIL
containing
abundant
carboxyl
phenolic
hydroxyl
functional
groups
provides
rich
zincophilic
sites
homogenize
flux
accelerate
desolvation‐deposition,
traps
H
+
/H
2
O
species
prevent
them
from
corroding
anodes,
thereby
stabilizing
deposition
interface.
Consequently,
CIL@Zn
present
superior
stability
an
operation
lifetime
exceeding
700
h
even
at
5
mA
cm
−2
(28
times
longer
than
bare
anodes)
ultrahigh
cumulative
plated
capacity
≈1.8
Ah
.
firm
anchoring
enables
endure
diverse
deformations,
thus
realizing
highly
anode‐based
Zn‐ESSs.
This
work
thinking
designing
promoting
development
storage.
ACS Sustainable Chemistry & Engineering,
Journal Year:
2024,
Volume and Issue:
12(6), P. 2455 - 2464
Published: Jan. 31, 2024
The
ammonium-ion
supercapacitor
(AISC)
with
nonmetal
charge
carriers
exhibits
merits
of
element
abundance
and
compatibility
aqueous
electrolytes.
However,
it
still
suffers
from
severe
performance
degradation
at
low
temperatures.
Herein,
a
novel
deep
eutectic
solvent
(DES)
containing
H2O,
ethylene
glycol,
(NH4)2SO4
is
designed
shows
freezing
point
−46.3
°C.
DES
further
incorporated
in
poly(vinyl
alcohol)/gelatin
gels
to
prepare
eutectogel
that
demonstrates
favorable
mechanical
flexibility
high
ionic
conductivity
45.6
mS
cm–1
room
temperature.
Furthermore,
the
also
an
excellent
self-extinguishing
property.
AISC
consisting
optimized
carbon
electrodes
indicates
remarkable
cycling
stability
∼100%
capacitance
retention
Coulombic
efficiency
after
30
000
charge–discharge
cycles.
Moreover,
flexible
electrochemical
under
harsh
conditions,
such
as
bending
deformation,
damaged
state,
low-temperature
environments.
Therefore,
this
work
provides
innovative
promising
platform
for
next-generation
energy
storage
systems.
Small,
Journal Year:
2022,
Volume and Issue:
18(27)
Published: June 9, 2022
Wearable
electronics
demand
energy
storage
devices
with
high
density
and
fast
charging-discharging
rates.
Although
various
porous
electrodes
have
been
constructed,
the
effect
of
pore
size
on
capacitive
performance
2D
nanomaterials
has
rarely
studied.
Herein,
flexible
MXene
foams
significantly
different
structures
are
fabricated
using
varying
diameter
polystyrene
(PS)
spheres
(80,
310,
570
nm),
which
shows
uniform
pores
interconnected
providing
enough
active
sites
a
good
electrical
connection
for
electron
transfer.
Noteworthy,
when
flakes
templates
(310
nm)
similar
size,
foam
delivers
highest
gravimetric
capacitance
474
±
12
F
g-1
at
2
mV
s-1
than
others.
Additionally,
mass
ratio
between
PS
controls
packing
influencing
inner
resistance
electrodes.
A
carbon
nanotube
is
introduced
to
further
improve
conductivity
achieve
462
8
retains
205
10
1000
,
demonstrating
promises
in
applications
an
insightful
guidance
designing
nanomaterials-based
supercapacitors.
