Inorganic Chemistry,
Journal Year:
2024,
Volume and Issue:
63(34), P. 16037 - 16046
Published: Aug. 9, 2024
The
core
principles
of
multicomponent
interface
and
electronic
structure
engineering
are
essential
in
designing
high-performance
catalysts
for
the
oxygen
evolution
reaction
(OER).
However,
combining
these
aspects
within
a
catalyst
is
significant
challenge.
In
this
investigation,
novel
approach
involving
development
hybrid
Ir-doped
CoMO4–Co(OH)2
(M
=
W
Mo)
hollow
nanoboxes
was
introduced,
enabling
remarkably
efficient
water
oxidation
electrocatalysis.
Constructed
from
ultrathin
nanosheet-assembled
nanoboxes,
structures
boast
wealth
active
centers
intermediate
species,
which
turn
enhance
both
charge
transfer
mass
transport
capabilities.
Moreover,
compelling
synergistic
effects
arising
interaction
between
CoMO4
Co(OH)2
significantly
bolster
OER
electrocatalysis
by
facilitating
electron
transfer.
introduction
Ir
atoms
serves
to
strategically
adjust
structure,
fine-tune
its
state,
operate
as
electrocatalysis,
thus
diminishing
overpotential.
This
configuration
results
Ir-CoWO4–Co(OH)2
Ir-CoMoO4–Co(OH)2
exhibiting
impressively
low
overpotentials
252
261
mV,
respectively,
10
mA
cm–2.
Utilized
conjunction
with
Pt/C
two-electrode
system
overall
splitting,
mere
1.53
V
cell
potential
needed
achieve
desired
cm–2
current
density.
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
35(30)
Published: April 18, 2023
Rare-earth
(RE)-based
transition
metal
oxides
(TMO)
are
emerging
as
a
frontier
toward
the
oxygen
evolution
reaction
(OER),
yet
knowledge
regarding
their
electrocatalytic
mechanism
and
active
sites
is
very
limited.
In
this
work,
atomically
dispersed
Ce
on
CoO
successfully
designed
synthesized
by
an
effective
plasma
(P)-assisted
strategy
model
(P-Ce
SAs@CoO)
to
investigate
origin
of
OER
performance
in
RE-TMO
systems.
The
P-Ce
SAs@CoO
exhibits
favorable
with
overpotential
only
261
mV
at
10
mA
cm-2
robust
electrochemical
stability,
superior
individual
CoO.
X-ray
absorption
spectroscopy
situ
Raman
reveal
that
Ce-induced
electron
redistribution
inhibits
CoO
bond
breakage
CoOCe
unit
site.
Theoretical
analysis
demonstrates
gradient
orbital
coupling
reinforces
covalency
Ce(4f)─O(2p)─Co(3d)
site
optimized
Co-3d-eg
occupancy,
which
can
balance
adsorption
strength
intermediates
turn
reach
apex
theoretical
maximum,
excellent
agreement
experimental
observations.
It
believed
establishment
Ce-CoO
set
basis
for
mechanistic
understanding
structural
design
high-performance
catalysts.
Advanced Energy Materials,
Journal Year:
2023,
Volume and Issue:
13(30)
Published: June 22, 2023
Abstract
Rare‐earth
(RE)
elements
have
emerged
as
crucial
promoters
to
regulate
the
electrocatalysis
of
transition
metals
(TM),
but
knowledge
about
RE‐enhanced
mechanism
TM
in
is
limited.
Herein,
an
array‐like
Ce‐CoP
catalyst
constructed
explore
origin
and
distinction
Ce‐induced
enhanced
Co
sites
both
hydrogen
evolution
reaction
(HER)
oxygen
(OER).
Compared
with
individual
CoP,
developed
exhibits
superior
bifunctional
electrocatalytic
activity
overpotentials
81
240
mV
at
10
mA
cm
−2
,
respectively
for
HER
OER,
excellent
stability.
Theoretical
calculations
show
that
unique
4
f
valence
electron
structure
Ce
endows
differentiated
regulation
OER
through
f‐p‐d
gradient
orbital
coupling.
In
HER,
retained
Ce‐4
state
induces
spin
parallelism
surrounding
sites,
promoting
adsorption
*H
intermediates.
While
band
acts
sacrificing
protect
from
overoxidation
Ce‐O‐Co
chain
optimized
Co‐3
d
state,
providing
additional
coupling
These
findings
provide
new
insights
into
comprehending
present
valuable
design
guidelines
development
efficient
multi‐functional
electrocatalysts.
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
36(7)
Published: Sept. 14, 2023
Hydrogen
production
from
electrolytic
water
electrolysis
is
considered
a
viable
method
for
hydrogen
with
significant
social
value
due
to
its
clean
and
pollution-free
nature,
high
efficiency,
purity,
but
the
anode
oxygen
evolution
reaction
(OER)
process
complex
kinetically
slow.
Single-atom
catalysts
(SACs)
100%
atom
utilization
homogeneous
active
sites
often
exhibit
catalytic
activity
are
expected
be
extensively
applied.
The
performance
of
OER
can
further
improved
by
precise
regulation
structure
through
electronic
effects,
coordination
environment,
heteroatomic
doping,
so
on.
In
this
review,
mechanisms
under
different
conditions
introduced,
latest
research
progress
SACs
in
field
systematically
summarized,
then
effects
various
structural
strategies
on
discussed,
principles
ideas
design
proposed.
end,
outstanding
issues
current
challenges
summarized.
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: April 2, 2024
Abstract
Metal-support
electronic
interactions
play
crucial
roles
in
triggering
the
hydrogen
spillover
(HSo)
to
boost
evolution
reaction
(HER).
It
requires
supported
metal
of
electron-rich
state
facilitate
proton
adsorption/spillover.
However,
this
contradicts
traditional
metal→support
electron
transfer
protocol
and
is
not
compatible
with
electron-donating
oxygen
(OER),
especially
proton-poor
alkaline
conditions.
Here
we
profile
an
Ir/NiPS
3
support
structure
study
Ir
states
performances
HSo/OER-integrated
water
electrolysis.
The
evidenced
Janus
electron-poor
at
tip
interface
regions
respectively
HSo
OER
processes.
Resultantly,
electrolysis
(WE)
efficiently
implemented
1.51
V
10
mA
cm
–2
for
1000
h
1
M
KOH
1.44
urea-KOH
electrolyte.
This
research
clarifies
as
fundamental
rationalizing
efficient
metal-support
WE
catalysts.
Industrial Chemistry and Materials,
Journal Year:
2023,
Volume and Issue:
1(3), P. 312 - 331
Published: Jan. 1, 2023
This
review
discusses
the
OER
reaction
mechanism
(AEM
and
LOM)
research
progress
of
MnO
2
-based
catalysts.
The
optimization
strategy
catalysts
was
summarized.
Advanced Energy Materials,
Journal Year:
2023,
Volume and Issue:
13(27)
Published: April 27, 2023
Abstract
Electrolytes
have
a
profound
impact
on
the
chemical
environment
of
electrocatalysis,
influencing
reaction
rate
and
selectivity
products.
Experimental
theoretical
studies
extensively
investigated
interaction
mechanisms
between
electrolyte
ions
(i.e.,
alkali
metal
cations,
carbonate
anions)
reactants
or
catalyst
surface
in
electrocatalytic
reactions
such
as
hydrogen
evolution
reaction,
oxygen
reduction
water
oxidation
CO
2
reaction.
Past
demonstrated
noticeable
dependence
electrochemical
activity
identity
ions.
However,
few
overviews
comprehensively
specifically
discussed
effects
cations
anions
common
reactions.
In
order
to
clarify
give
more
insights
this
research
area,
review
aims
summarize
highlight
recent
progress
understanding
various
ionic
species
their
influence
diverse
for
splitting,
H
O
production,
reduction.
The
challenges
perspectives
effect
electrocatalysis
are
also
presented.
Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
14(23)
Published: March 26, 2024
Abstract
Transition‐metal‐based
compounds
have
been
intensively
explored
as
efficient
electrocatalysts
for
hydrogen
evolution
reaction
(HER).
Feasible
reconstruction
to
the
real
active
sites,
which
is
yet
be
identified,
endows
promotion
of
HER
activity.
Here,
it
reported
that
incoming
S
coordinates
and
anion
vacancies
prompt
structural
S‐doped
Co
3
O
4
on
carbon
cloth
(S‐Co
/CC)
during
HER.
A
list
in
situ
studies
reveals
sites
are
“metallic
surface‐adparticles”
system
embracing
metallic
scaffold
dilute
coverage
coordinated
δ+
.
Reaction
mechanism
exploration
illustrates
interfacial
perimeters
between
moieties
considerably
facilitate
adsorption
H*,
improve
kinetics
water
dissociation,
consequently
promote
The
exemplified
sulfide‐mediated
topotactic
transformation
strategy
extended
preparation
S,
Fe
codoped
Ni(OH)
2
(S‐NiFe/CC)
a
bifunctional
electrocatalyst.
assembled
exchange
membrane
electrolyzer
achieves
current
density
1.0
cm
−2
at
1.72
V,
showing
excellent
capability
catalyzing
overall
splitting
ampere
level.
This
study,
feasible
enables
facile
identify
would
inspire
development
other
electrochemical
hydrogenation
reaction.
