Tungsten,
Год журнала:
2024,
Номер
6(4), С. 675 - 695
Опубликована: Март 16, 2024
Abstract
Hydrogen
fuel
is
recognized
as
a
promising
energy
carrier
for
the
sustainable
development
of
global
system
and
green
hydrogen
production
via
water
electrolysis
attracts
great
interest.
The
cost-effective
electrocatalysts
important
enhancing
efficiency.
Recently,
tungsten
pnictides
(phosphides
nitrides)
have
emerged
catalysts
electrolysis,
efficient
pnictide-based
with
different
nanostructures,
compositions,
surface
chemical
properties
been
developed.
In
this
review,
recent
progress
in
design
comprehensively
analyzed.
synthesis
are
discussed
briefly.
Then,
current
achievements
developing
pnictide
detailed,
four
key
catalyst
strategies
(i.e.,
nanostructure
control,
heteroatom
doping,
defect
engineering,
heterostructure
design)
outlined.
physicochemical
properties-catalytic
performance
relationship
also
discussed.
At
last,
perspectives
field
put
forward
guiding
further
research
on
application
high-performance
electrocatalysts.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Июнь 26, 2024
Abstract
Electrocatalysis
represents
an
efficient
and
eco‐friendly
approach
to
energy
conversion,
enabling
the
sustainable
synthesis
of
valuable
chemicals
fuels.
The
deliberate
engineering
electrocatalysts
is
crucial
improving
efficacy
scalability
electrocatalysis.
Notably,
occurrence
in
situ
amorphization
within
has
been
observed
during
various
electrochemical
processes,
influencing
conversion
efficiency
catalytic
mechanism
understanding.
Of
note,
dynamic
transformation
catalysts
into
amorphous
structures
complex,
often
leading
configurations.
Therefore,
revealing
this
process
understanding
function
species
are
pivotal
for
elucidating
structure‐activity
relationship
electrocatalysts,
which
will
direct
creation
highly
catalysts.
This
review
examines
mechanisms
behind
structure
formation,
summarizes
characterization
methods
detecting
species,
discusses
strategies
controlling
(pre)catalyst
properties
conditions
that
influence
amorphization.
It
also
emphasizes
importance
spontaneously
formed
oxidation
reduction
reactions.
Finally,
it
addresses
challenges
electrocatalysts.
aiming
guide
efficient,
selective,
stable
reactions,
inspire
future
advancements
field.
Energy & Fuels,
Год журнала:
2024,
Номер
38(8), С. 7292 - 7301
Опубликована: Март 28, 2024
Designing
a
cost-effective
and
highly
active
thin
film
electrocatalyst
is
crucial
for
expediting
the
kinetics
of
oxygen
evolution
reaction
(OER)
clean
hydrogen
production
via
water
electrolysis.
Herein,
we
report
fabrication
efficient
robust
OER
catalysts
by
depositing
films
iron–vanadium
oxide
(FeVOx)
on
nickel
foam
(NF)
using
aerosol-assisted
chemical
vapor
deposition
(AACVD).
Different
morphological
variants
FeVOx
catalyst
prepared
within
40
to
120
min
were
thoroughly
investigated
oxidation
in
1.0
M
KOH
solution.
The
corresponding
electrochemical
experiments
validate
exceptional
performance
FeVOx-40
catalyst,
as
current
density
sharply
increases
from
10
1000
mA
cm–2
narrow
overpotential
range
270–330
mV
(vs
RHE).
Moreover,
this
retains
its
initial
morphology
composition
even
after
performing
continuous
operation
100
h.
outstanding
catalytic
was
credited
distinctive
synergy
with
underlying
NF
support,
which
enhanced
overall
conductivity
system.
straightforward
effective
bimetallic
system
(FeVOx/NF)
enable
communities
develop
utilize
novel
electrocatalysts
dissociation.
Energy & Fuels,
Год журнала:
2024,
Номер
38(9), С. 8249 - 8261
Опубликована: Апрель 11, 2024
Water
is
the
most
convenient
and
facile
fossil-free
source
for
production
of
hydrogen
(H2).
Electrochemical
water
splitting
considered
a
promising
potential
approach
accomplishing
frugality.
Although
water-splitting
reaction
versatile
green
technique,
it
accounts
only
4%
universal
H2
production.
The
main
hindrance
in
large-scale
sluggish
kinetics
reaction,
which
employs
costlier
precious
catalysts.
In
addition,
half-cell
reactions
evolution
(HER)
oxygen
(OER)
require
two
different
types
catalysts,
not
increases
cost
but
also
decreases
efficiency
due
to
enhanced
complexity
system.
Hence,
designing
an
efficient,
robust,
nonprecious,
earth-abundant,
low-cost
electrocatalyst
capable
catalyzing
both
HER
OER
during
overall
urgent
requirement
meet
energy
demand
sustainable
growth.
Here,
highly
bifunctional
fabricated
using
quinone-substituted
cobalt(II)
phthalocyanine
(HQCoPc)
with
carbon
nanoparticles
(Ketjen
black,
KB).
organic
hybrid
HQCoPc
+
KB
modified
on
GCE
Ni
foam
showed
remarkable
electrocatalytic
performance
acidic
basic
conditions,
respectively.
composite
affords
lower
onset
76
mV
overpotential
234
360
at
10
mA·cm–2
OER,
respectively,
superior
stability
more
than
40,000
s.
designed
offers
better
catalyst
addressing
provides
cost-effectiveness
good
chemical
technology.
