ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(19), P. 24660 - 24670
Published: May 6, 2024
The
development
of
affordable,
highly
active,
and
stable
trifunctional
electrocatalysts
is
imperative
for
sustainable
energy
applications
such
as
overall
water
splitting
rechargeable
Zn–air
battery.
Herein,
we
report
a
composite
electrocatalyst
with
RuSe2
CoSe2
hybrid
nanoparticles
embedded
in
nitrogen-doped
carbon
(RuSe2CoSe2/NC)
synthesized
through
carbonization–adsorption–selenylation
strategy.
This
excellent
hydrogen
evolution
reaction
(HER),
oxygen
(OER),
reduction
(ORR)
activities.
An
in-depth
study
the
effect
Se
on
electrocatalytic
process
was
conducted.
Notably,
incorporation
moderately
adjusted
electronic
structure
Ru
Co,
enhancing
all
three
types
catalytic
performance
(HER,
η10
=
31
mV;
OER,
248
ORR,
E1/2
0.834
V)
under
alkaline
condition
accelerated
kinetics
improved
stability.
Density
functional
theory
(DFT)
calculation
reveals
that
(210)
crystal
facet
dominant
HER
active
site
it
exhibited
lowest
ΔGH*
value.
situ
Raman
spectra
unravel
local
environment
Co–Se
Ru–Se
bonds,
which
synergistically
promotes
formation
CoOOH
intermediate
during
OER.
superior
efficiency
remarkable
durability
RuSe2CoSe2/NC
an
electrode
zinc–air
battery
devices
demonstrate
its
great
potential
storage
conversion
devices.
Green Energy & Environment,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Feb. 1, 2024
Direct
seawater
splitting
has
emerged
as
a
popular
and
promising
research
direction
for
the
synthesis
of
clean,
green,
non-polluting,
sustainable
hydrogen
energy
without
depending
on
high-purity
water
in
face
world's
shortage
fossil
energy.
However,
efficient
is
hindered
by
slow
kinetics
caused
ultra-low
conductivity
presence
bacteria,
microorganisms,
stray
ions
seawater.
Additionally,
producing
an
industrial
scale
challenging
due
to
high
production
cost.
To
address
these
challenges,
this
review
presents
that
from
catalyst
point
view,
designing
catalysts
with
catalytic
activity
stability
can
directly
affect
rate
effect
splitting.
From
ion
transfer
perspective,
membranes
block
harmful
ions,
improving
mixed
systems
self-powered
also
provide
new
low-energy
Finally,
ideas
directions
further
direct
future
are
pointed
out,
aims
achieving
low-cost
high-efficiency
production.
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: April 29, 2024
Abstract
Supercapacitors
and
water
splitting
cells
have
recently
played
a
key
role
in
offering
green
energy
through
converting
renewable
sources
into
electricity.
Perovskite-type
electrocatalysts
such
as
BaTiO
3
,
been
well-known
for
their
ability
to
efficiently
split
serve
supercapacitors
due
high
electrocatalytic
activity.
In
this
study,
Al-doped
Ce-doped
Al-Ce
co-doped
nanofibers
were
fabricated
via
two-step
hydrothermal
method,
which
then
characterized
compared
performance.
Based
on
the
obtained
results,
electrode
exhibited
capacitance
of
224.18
Fg
−1
at
scan
rate
10
mVs
durability
during
over
1000
CV
cycles
2000
charge–discharge
cycles,
proving
effective
storage
properties.
Additionally,
onset
potentials
OER
HER
processes
11
−
174
mV
vs.
RHE,
respectively,
demonstrating
activity
electrode.
Moreover,
overall
splitting,
amount
overpotential
was
0.820
mAcm
−2
confirmed
excellent
efficiency
Hence,
remarkable
performance
make
it
promising
candidate
technologies
owing
its
conductivity
fast
charge
transfer.
Journal of Energy Chemistry,
Journal Year:
2024,
Volume and Issue:
93, P. 511 - 518
Published: March 5, 2024
An
advantageous
porous
architecture
of
electrodes
is
pivotal
in
significantly
enhancing
alkaline
water
electrolysis
(AWE)
efficiency
by
optimizing
the
mass
transport
mechanisms.
This
effect
becomes
even
more
pronounced
when
aiming
to
achieve
elevated
current
densities.
Herein,
we
employed
a
rapid
and
scalable
laser
texturing
process
craft
novel
multi-channel
electrodes.
Particularly,
obtained
exhibit
lowest
Tafel
slope
79
mV
dec–1
(HER)
49
(OER).
As
anticipated,
electrolyzer
(AEL)
cell
incorporating
(NP-LT30)
exhibited
remarkable
improvement
efficiency,
with
voltage
drops
(from
2.28
1.97
V)
exceeding
300
under
1
A
cm−1,
compared
conventional
perforated
Ni
plate
enhancement
mainly
stemmed
from
structure,
facilitating
bubble
dynamics
through
an
innovative
convection
mode,
surpassing
traditional
mode.
Furthermore,
NP-LT30-based
AEL
demonstrated
exceptional
durability
for
h
1.0
cm–2.
study
underscores
capability
expedite
practical
AWE
applications.
