ACS Applied Engineering Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 24, 2024
The
development
of
bifunctional
electrocatalysts
using
renewable
electricity
for
sustainable
green
energy
industrial
production
is
a
potential
method.
As
result,
numerous
standard
methodologies
investigate
developing
that
naturally
alter
the
electronic
structure
and
minimize
kinetic
barriers.
This
study
developed
promising
method
engineering
interfacial
heterostructure
nanoframes
(Co2P/FeP-FeP4,
hereafter
denoted
as
CFP-8)
deposited
on
nickel
foam
hydrothermal
low-temperature
phosphorization
techniques.
However,
improved
CFP-8
electrocatalyst
was
exposed
to
abundant
active
sites
nanocrystals
remained
intact.
Importantly,
P
incorporation
plays
crucial
role
in
creating
vacancy
defect,
which
contributes
thermodynamic
favoring
electrocatalysis
oxygen
evolution
reaction
(OER)
intrinsically
enhances
hydrogen
adsorption-free
reactions
(HERs),
due
interconnected
arrangement
via
synergistic
strain-induced
effect.
Therefore,
enclosed
demonstrate
good
performance
display
low
overpotential
with
high
current
densities
(HER,
η10
=
97
mV,
η20
131
η50
186
mV;
OER,
230
247
280
mV)
minimal
Tafel
value
111
mV/dec
74
HER
OER
under
alkaline
medium,
superior
benchmark
electrocatalysts.
Also,
demonstrated
remarkable
stability
over
50
h,
utilizing
chronoamperometry
(CA)
chronopotentiometry
(CP).
In
addition,
an
integrated
electrolyzer
CFP-8/NF
electrodes
(polymeric
binder-free
electrodes)
delivered
cell
voltage
1.65
V
density
20
mA
cm–2
accelerated
kinetics
stability,
outperforming
Pt/C
(cathode)||RuO2
(anode)
overall
water
splitting
(OWSRs).
coexistence
Co,
Fe,
elements
may
accelerate
electron
mass
movement,
improving
electrocatalytic
performance.
paves
way
further
research
into
low-cost
transition
metal-based
phosphides
applications.
Molecules,
Год журнала:
2024,
Номер
29(18), С. 4304 - 4304
Опубликована: Сен. 11, 2024
Water
electrolysis
has
been
recognized
as
a
promising
technology
that
can
convert
renewable
energy
into
hydrogen
for
storage
and
utilization.
The
superior
activity
low
cost
of
catalysis
are
key
factors
in
promoting
the
industrialization
water
electrolysis.
Single-atom
catalysts
(SACs)
have
attracted
attention
due
to
their
ultra-high
atomic
utilization,
clear
structure,
highest
evolution
reaction
(HER)
performance.
In
addition,
performance
stability
single-atom
(SA)
substrates
crucial,
various
two-dimensional
(2D)
nanomaterial
supports
become
foundations
SA
unique
exposed
surfaces,
diverse
elemental
compositions,
flexible
electronic
structures,
drive
single
atoms
reach
limits.
supported
by
2D
nanomaterials
exhibits
interactions
synergistic
effects,
all
which
need
be
comprehensively
summarized.
This
article
aims
organize
discuss
progress
enhancing
HER,
including
common
widely
used
synthesis
methods,
advanced
characterization
techniques,
different
types
supports,
correlation
between
structural
Finally,
latest
understanding
was
proposed.
In
recent
years,
transition
metal
phosphides
as
electrocatalysts
are
the
research
hotspot
due
to
their
low
cost
and
high
electrical
conductivity.
However,
applications
largely
restricted
by
conversion
efficiency
sluggish
reaction
kinetics.
Herein,
we
report
several
kinds
of
flower-like
Co0.4Fe1.6P
catalysts
through
a
facile
hydrothermal
approach
subsequent
phosphating
process.
The
as-prepared
materials
possess
sufficient
catalytic
sites
facilitate
ion
transfer.
Co0.4Fe1.6P-2
electrode
presents
an
overpotential
244
mV@50
mA
cm–2
for
oxygen
evolution
(OER)
96
mV@10
hydrogen
(HER).
Moreover,
assembled
two-electrode
system
voltage
1.66
V
at
current
density
50
cm–2.
Advanced Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 20, 2024
Abstract
Recently,
metal‐based
atomically
thin
materials
(M‐ATMs)
have
experienced
rapid
development
due
to
their
large
specific
surface
areas,
abundant
electrochemically
accessible
sites,
attractive
chemistry,
and
strong
in‐plane
chemical
bonds.
These
characteristics
make
them
highly
desirable
for
energy‐related
conversion
reactions.
However,
the
insufficient
active
sites
slow
reaction
kinetics
leading
unsatisfactory
electrocatalytic
performance
limited
commercial
application.
To
address
these
issues,
defect
engineering
of
M‐ATMs
has
emerged
increase
modify
electronic
structure,
enhance
catalytic
reactivity
stability.
This
review
provides
a
comprehensive
summary
strategies
M‐ATM
nanostructures,
including
vacancy
creation,
heteroatom
doping,
amorphous
phase/grain
boundary
generation,
heterointerface
construction.
Introducing
recent
advancements
in
application
electrochemical
small
molecule
reactions
(e.g.,
hydrogen,
oxygen,
carbon
dioxide,
nitrogen,
sulfur),
which
can
contribute
circular
economy
by
recycling
molecules
like
H
2
,
O
CO
N
S.
Furthermore,
crucial
link
between
reconstruction
atomic‐level
structure
activity
via
analyzing
dynamic
evolution
during
process
is
established.
The
also
outlines
challenges
prospects
associated
with
M‐ATM‐based
catalysts
inspire
further
research
efforts
developing
high‐performance
M‐ATMs.
