Energy & environment materials,
Год журнала:
2024,
Номер
7(6)
Опубликована: Май 21, 2024
Transition
metal
phosphides
(TMPs)
have
emerged
as
an
alternative
to
precious
metals
efficient
and
low‐cost
catalysts
for
water
electrolysis.
Elemental
doping
morphology
control
are
effective
approaches
further
improve
the
performance
of
TMPs.
Herein,
Fe‐doped
CoP
nanoframes
(Fe‐CoP
NFs)
with
specific
open
cage
configuration
were
designed
synthesized.
The
unique
nano‐framework
structured
Fe‐CoP
material
shows
overpotentials
only
255
122
mV
at
10
mA
cm
−2
oxygen
evolution
reaction
(OER)
hydrogen
(HER),
respectively,
overwhelming
most
transition
phosphides.
For
overall
splitting,
cell
voltage
is
1.65
V
NFs
a
current
density
,
much
superior
what
observed
classical
nanocubic
structures.
show
no
activity
degradation
up
100
h
which
contrasts
sharply
rapidly
decaying
noble
catalyst
reference.
electrocatalytic
due
abundant
accessible
active
sites,
reduced
kinetic
energy
barrier,
preferable
*O‐containing
intermediate
adsorption
demonstrated
through
experimental
observations
theoretical
calculations.
Our
findings
could
provide
potential
method
preparation
multifunctional
hollow
structures
offer
more
hopeful
prospects
obtaining
earth‐abundant
splitting.
Recently,
electrically
conductive
metal–organic
frameworks
(EC-MOFs)
have
emerged
as
a
wealthy
library
of
porous
with
unique
properties,
allowing
their
use
in
diverse
applications
energy
conversion,
including
electrocatalysis.
In
this
review,
the
electron
conduction
mechanisms
EC-MOFs
are
examined,
while
electrical
conductivities
considered.
There
been
various
strategies
to
enhance
MOFs
ligand
modification,
incorporation
conducting
materials,
and
construction
multidimensional
architectures.
With
sufficient
being
established
for
EC-MOFs,
there
extensive
pursuits
electrocatalysis
applications,
such
hydrogen
evolution
reaction,
oxygen
reduction
N2
CO2
reaction.
addition,
computational
modeling
also
exerts
an
important
impact
on
revealing
synthesis–structure–performance
relationships.
Finally,
prospects
current
challenges
discussed
provide
guidelines
designing
promising
framework
materials.
International Journal of Hydrogen Energy,
Год журнала:
2023,
Номер
52, С. 622 - 663
Опубликована: Май 30, 2023
Years
of
study
have
shown
that
creating
a
commercial
photoelectrode
to
solve
particular
bottlenecks,
such
as
low
charge
separation
and
injection
efficiency,
short
carrier
diffusion
length
lifespan,
poor
stability,
requires
the
employment
variety
components.
Developing
photovoltaic-electrolysis,
photocatalytic,
photoelectrochemical
approaches
accelerate
hydrogen
production
from
solar
energy
has
been
highly
competitive.
Photoelectrochemical
water
splitting
utilizing
nanoporous
materials
is
one
promising
produce
more
efficiently,
cost-effectively,
on
long-term
basis.
Nanoporous
used
in
water-splitting
systems
are
crucial
numerous
applications.
Those
porous
structure
excellent
conductivity,
enabling
deposition
transition
metal
atoms
electrochemically
active
chemicals
large
surface
area.
However,
there
remains
dearth
review
articles
exploring
application
reactions.
Therefore,
this
provides
bibliometric
statistics
various
perspectives
range
materials,
including
indium,
nickel,
gold,
copper,
lead,
silver,
aluminum,
silicon,
tin,
iron,
zinc,
titanium,
bismuth
vanadate,
cadmium
sulfide,
zeolites.
Additionally,
offers
comprehensive
assessment
worldwide
studies
cells.
We
show
how
morphological
modifications
may
improve
transfer
and,
consequence,
overall
power
conversion
efficiency.ke
The
superior
catalytic
performance
nanostructures
with
varying
levels
complexity
discovered
Finally,
significant
issues
future
research
directions
domains
discussed.
Polyoxometalates,
Год журнала:
2023,
Номер
2(4), С. 9140031 - 9140031
Опубликована: Авг. 2, 2023
Hydrogen
evolution
reaction
(HER)
is
a
vital
step
for
water
electrolysis
toward
H2
production,
but
the
conventional
nanocatalysts
lack
uniform
size,
composition,
structure,
and
chemical
coordination
environment
hence
making
it
extremely
challenging
to
establish
unambiguous
structure-performance
relationship.
Owing
ultrasmall
definitive
well-defined
at
atomic
level,
atomically
precise
Au
nanoclusters
can
serve
as
model
catalysts
improve
knowledge
gap
between
structure
catalytic
properties.
This
review
first
explains
significance
fundamental
mechanism
of
HER,
highlights
unique
advantages
employing
catalysts.
Subsequently,
recent
progress
including
promote
catalyze
Au-alloy
HER
discussed,
with
focus
on
elaborating
With
some
explicit
examples,
key
factors
that
affect
performance
not
limited
electronic
interaction,
interfacial
effect,
size
charge
state,
ligand
metal
core
single
atom
doping,
geometric
configuration
effect
are
analyzed.
Finally,
current
critical
challenges
future
perspectives
discussed.
We
hope
this
shed
light
designing
efficient
stable
coinage
nanocluster-based
catalyst
electrochemical
production
beyond.
Abstract
The
rational
design
of
metal–organic
framework
(MOF)‐based
electrocatalysts
plays
a
key
role
in
achieving
high‐efficiency
oxygen
evolution
reaction
(OER).
Herein,
synergetic
morphology
and
electronic
structure
engineering
strategy
are
proposed
to
Co‐MOF
nanoflower
grown
on
carbon
paper
via
rare‐earth
cerium
doping
(CoCe‐MOF/CP).
Compared
with
Co‐MOF/CP,
the
developed
CoCe‐MOF/CP
exhibited
superior
OER
performance
low
overpotential
267
mV
at
10
mA
cm
−2
outstanding
long‐term
stability
over
100
h.
Theoretical
calculations
show
that
unique
4f
valence
electron
Ce
induced
charge
redistribution
surface
through
strong
Co
3d‐O
2p‐Ce
orbital
coupling
below
Fermi
level.
Ce‐doped
states
sites
endow
them
optimal
free
energy
landscape
for
enhanced
catalytic
activity.
This
work
provides
new
insights
into
comprehending
RE‐enhanced
mechanism
electrocatalysis
an
effective
MOF‐based
electrocatalysts.
