ACS Applied Energy Materials,
Journal Year:
2024,
Volume and Issue:
7(9), P. 4260 - 4267
Published: April 16, 2024
The
development
of
cost-effective
electrocatalysts
with
high
performance
for
oxygen
evolution
and
urea
oxidation
reaction
(OER/UOR)
is
desirable
but
remains
a
great
challenge.
Here,
we
report
facile
strategy
boron-doping
cobalt
cobalt–phosphide
interfacial
(B–Co/Co2P)
bifunctional
OER/UOR.
By
virtue
B
doping,
the
abundant
exposed
active
sites
as
well
enhanced
electrical
conductivity
can
efficiently
improve
charge
migration
heterogeneous
sites.
Therefore,
obtained
B–Co/Co2P
exhibit
OER/UOR
activities
an
outstanding
overpotential
284
107
mV
at
industrial
current
density
100
mA
cm–2,
respectively.
Such
excellent
catalytic
attributed
to
fact
that
dopant
adjusts
electron
distribution
optimizes
adsorption/desorption
intermediate
species,
reduces
energy
barriers
water
oxidation.
Furthermore,
setup
two-electrode
cell
requires
merely
overpotentials
280.7
56.9
drive
10
cm–2
robust
stability
in
splitting
electrolysis,
Overall,
this
provides
construct
catalysts
efficiency
hydrogen
generation.
Small,
Journal Year:
2023,
Volume and Issue:
19(45)
Published: July 11, 2023
Abstract
Water
splitting
is
a
promising
technique
in
the
sustainable
“green
hydrogen”
generation
to
meet
energy
demands
of
modern
society.
Its
industrial
application
heavily
dependent
on
development
novel
catalysts
with
high
performance
and
low
cost
for
hydrogen
evolution
reaction
(HER).
As
typical
non‐precious
metal,
cobalt‐based
have
gained
tremendous
attention
recent
years
shown
great
prospect
commercialization.
However,
complexity
composition
structure
newly‐developed
Co‐based
make
it
urgent
comprehensively
retrospect
summarize
their
advance
design
strategies.
Hence,
this
review,
mechanism
HER
first
introduced
possible
role
Co
component
during
electrocatalysis
discussed.
Then,
various
strategies
that
could
effectively
enhance
intrinsic
activity
are
summarized,
including
surface
vacancy
engineering,
heteroatom
doping,
phase
facet
regulation,
heterostructure
construction,
support
effect.
The
progress
advanced
electrocatalysts
discussed,
emphasizing
above
can
significantly
improve
by
regulating
electronic
optimizing
binding
crucial
intermediates.
At
last,
prospects
challenges
according
viewpoint
from
fundamental
explorations
applications.
Journal of Materials Chemistry A,
Journal Year:
2023,
Volume and Issue:
12(3), P. 1714 - 1724
Published: Dec. 7, 2023
NiFeSe
4
/NiSe
2
-8
h
had
good
overall
water
splitting
performance.
The
heterostructure
of
the
prepared
promoted
redistribution
electrons
and
improved
conductivity
material.
ACS Catalysis,
Journal Year:
2024,
Volume and Issue:
14(5), P. 3320 - 3335
Published: Feb. 16, 2024
Nowadays,
the
assembling
of
hybrid
water
electrolysis
using
a
hydrazine
oxidation
reaction
(HzOR)
instead
slow
anodic
oxygen
evolution
(OER)
has
been
established
as
favorable
technology
for
efficient
hydrogen
(H2)
production.
Nevertheless,
it
is
still
critical
to
develop
highly
effective
bifunctional
electrocatalysts
both
(HER)
and
HzOR.
In
this
work,
we
propose
facile
approach
design
synthesis
single-Pd-nanoparticles-decorated
bimetallic
NiCo2O4
nanoplates
electrocatalyst
HER
Initially,
are
synthesized
by
combination
hydrothermal
high-temperature
calcination.
Subsequently,
single-Pd
nanoparticles
with
varying
proportions
decorated
on
via
pulsed
laser
irradiation
(PLI),
leading
formation
Pd/NiCo2O4
composites.
The
optimized
composite
shows
remarkable
electrocatalytic
ability
low
overpotential
294
mV
an
ultrasmall
working
potential
−6
(vs
RHE)
HzOR
at
10
mA
cm–2
in
1
M
KOH
electrolyte.
Thus,
overall
splitting
(OHzS)
electrolyzer
Pd/NiCo2O4∥Pd/NiCo2O4
system
presents
current
densities
100
respective
cell
voltages
0.35
0.94
V.
Notably,
situ/operando
Raman
spectroscopy
confirms
surface
α-Co(OH)2
during
γ-NiOOH
Furthermore,
density
function
theory
(DFT)
calculations
demonstrate
that
decoration
Pd
onto
facilitates
optimization
adsorption
free
energy
(ΔGH*)
enhancement
dehydrogenation
kinetics.
This
work
introduces
strategy
fabricating
electrocatalysts,
potentially
useful
energy-saving
H2
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(27)
Published: March 1, 2024
Abstract
The
development
of
stable
and
efficient
electrocatalysts
for
overall
freshwater/seawater
water‐splitting
has
received
significant
attention.
In
this
study,
the
fabrication
electrocatalytic
properties
phosphorus‐enriched
PtP
2
dispersed
on
CoP
(PtP
/CoP)
HER
OER
in
both
alkaline
fresh/seawater
media
are
described.
Physical
characterization
density
functional
theory
calculations
reveal
that
strong
electronic
interfacial
interactions
between
optimized
reaction
kinetics
by
regulating
adsorption/desorption
intermediates
cleavage
reactants.
Additionally,
operando
electrochemical
impedance
spectroscopy
reveals
/CoP
significantly
decreased
phase
angle
with
increasing
applied
potential
compared
CoP,
demonstrating
construction
heterostructure
provides
a
faster
charge
transfer
surface
inner
layer.
Notably,
catalyst
only
requires
overpotentials
101
298
mV
to
achieve
benchmark
100
mA
cm
−2
freshwater
OER.
Moreover,
prepared
featured
108
330
an
seawater
electrolyte.
Furthermore,
high‐efficiency
water
electrolysis
operation
can
be
achieved
using
as
anode
cathode
(1.63
V@100
)
coupled
satisfactory
durability.
This
finding
deeper
comprehension
interaction
Pt‐less
compounds
matrix
electrocatalysis
bifunctional
electrocatalysts.
ACS Catalysis,
Journal Year:
2024,
Volume and Issue:
14(2), P. 757 - 775
Published: Jan. 2, 2024
The
studies
of
metal
phosphides
(MPs)
have
flourished
in
the
past
decades
due
to
their
exceptional
catalytic
performance
thermo-,
electro-,
and
photocatalysis.
In
this
review,
we
summarize
synthesis
methods
MPs
attribute
unique
properties
electronic,
geometric,
synergetic
modifications.
multifunctionality
phosphorus
doping
makes
phosphide
an
atypical
catalyst.
withdraws
electrons
from
sites,
isolates
provides
sites
simultaneously,
leading
high
activities
various
reactions,
such
as
hydroformylation,
hydrogen
evolution
reaction
(HER),
photocatalytic
H2
production.
variety
enables
rational
design
catalysts
based
on
requirements
different
reactions
expands
application
scenarios
MPs.
This
review
summarizes
structure–performance
relationship
MPs,
paving
way
for
future
catalyst
mechanism
studies.
Small,
Journal Year:
2023,
Volume and Issue:
20(17)
Published: Dec. 7, 2023
Abstract
Conductive
metal–organic
frameworks
(MOFs)
are
a
type
of
porous
material.
It
consists
metal
ions
coordinated
with
highly
conjugated
organic
ligands.
The
high
density
carriers
and
orbital
overlap
contribute
to
the
amazing
conductivity.
Additionally,
conductive
MOFs
inherit
advantages
large
specific
surface
area,
structural
diversity,
adjustable
pore
size
from
MOFs.
These
excellent
properties
have
attracted
many
researchers
explore
controllable
synthesis
electrochemical
applications
over
past
decade.
This
work
provides
an
overview
recent
advances
in
strategies
highlights
their
electrocatalysis,
supercapacitors,
sensors,
batteries.
Finally,
challenges
faced
by
application
discussed,
as
well
views
on
promising
solutions
for
them
presented.
Chemical Communications,
Journal Year:
2023,
Volume and Issue:
59(37), P. 5575 - 5578
Published: Jan. 1, 2023
Herein,
we
put
forward
a
novel
electrode
by
electrochemically
integrating
metal
W
species
and
Co2P
nanosheets
onto
nickel
foam
(W@Co2P/NF),
which
delivers
excellent
bifunctional
activity
for
both
the
HER
HzOR.
The
hydrazine
assisted
water
electrolyzer
provides
small
cell
potential
of
0.18
V
at
100
mA
cm-2
stability
hydrogen
generation,
is
superior
to
most
other
materials.
