Small,
Journal Year:
2023,
Volume and Issue:
19(49)
Published: Aug. 7, 2023
Abstract
The
precatalyst
undergoes
surface
reconstruction
during
the
oxygen
evolution
reaction
(OER)
process,
and
reconstituted
material
is
one
that
really
plays
a
catalytic
role.
However,
degree
of
seriously
affects
performance.
For
this
reason,
it
important
to
establish
link
between
activity
based
on
deep
understanding
OER
mechanism
for
rational
design
high‐performance
electrocatalysts.
Here,
briefly
introduced,
competition
adsorbate
(AEM)
lattice
oxygen‐mediated
(LOM)
discussed,
several
descriptors
are
summarized.
strategies
realize
controllable
emphatically
including
ion
leaching,
element
doping,
regulating
catalyst
size,
heterogeneous
structure
engineering,
self‐reconstruction.
A
mechanistic
perspective
emphasized
understand
relationship
dynamic
electronic
structure.
Controlled
reconfiguration
can
break
limitation
proportional
brought
by
traditional
AEM
mechanism,
also
switching
LOM
thus
realizing
ultra‐low
overpotential.
This
review
will
provide
some
reference
transition
metal‐based
catalysts
reasonable
development
ideal
Nature Communications,
Journal Year:
2023,
Volume and Issue:
14(1)
Published: March 14, 2023
Exploring
durable
electrocatalysts
with
high
activity
for
oxygen
evolution
reaction
(OER)
in
acidic
media
is
of
paramount
importance
H2
production
via
polymer
electrolyte
membrane
electrolyzers,
yet
it
remains
urgently
challenging.
Herein,
we
report
a
synergistic
strategy
Rh
doping
and
surface
vacancies
to
precisely
regulate
unconventional
OER
path
the
Ru-O-Rh
active
sites
Rh-RuO2,
simultaneously
boosting
intrinsic
stability.
The
stabilized
low-valent
catalyst
exhibits
remarkable
performance,
an
overpotential
161
mV
at
10
mA
cm-2
retention
99.2%
exceeding
700
h
50
cm-2.
Quasi
situ/operando
characterizations
demonstrate
recurrence
reversible
species
under
working
potentials
enhanced
durability.
It
theoretically
revealed
that
Rh-RuO2
passes
through
more
optimal
lattice
mediated
mechanism-oxygen
vacancy
site
mechanism
induced
by
interaction
defects
rate-determining
step
*O
formation,
breaking
barrier
limitation
(*OOH)
traditional
adsorption
mechanism.
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.
Angewandte Chemie International Edition,
Journal Year:
2022,
Volume and Issue:
62(11)
Published: Dec. 22, 2022
Abstract
Polymer
electrolyte
membrane
water
electrolysis
(PEMWE)
has
been
regarded
as
a
promising
technology
for
renewable
hydrogen
production.
However,
acidic
oxygen
evolution
reaction
(OER)
catalysts
with
long‐term
stability
impose
grand
challenge
in
its
large‐scale
industrialization.
In
this
review,
critical
factors
that
may
lead
to
catalyst's
instability
couple
potential
solutions
are
comprehensively
discussed,
including
mechanical
peeling,
substrate
corrosion,
active‐site
over‐oxidation/dissolution,
reconstruction,
oxide
crystal
structure
collapse
through
the
lattice
oxygen‐participated
pathway,
etc.
Last
but
not
least,
personal
prospects
provided
terms
of
rigorous
evaluation
criteria,
situ
/
operando
characterizations,
economic
feasibility
and
practical
electrolyzer
consideration,
highlighting
ternary
relationship
evolution,
industrial‐relevant
activity
serve
roadmap
towards
ultimate
application
PEMWE.
Advanced Energy Materials,
Journal Year:
2023,
Volume and Issue:
13(31)
Published: June 29, 2023
Abstract
Transition
metal‐based
oxyhydroxides
(MOOH)
derived
from
the
irreversible
structural
reconstruction
of
precatalysts
are
often
acknowledged
as
real
catalytic
species
for
oxygen
evolution
reaction
(OER).
Typically,
reconstruction‐derived
MOOH
would
exhibit
superior
OER
activity
compared
to
their
directly
synthesized
counterparts,
despite
being
fundamentally
similar
in
chemistry.
As
such,
has
emerged
a
promising
strategy
boost
electrocatalysts.
However,
in‐depth
understanding
origin
reconstructed
materials
still
remains
ambiguous,
which
significantly
hinders
further
developments
highly
efficient
electrocatalysts
based
on
In
this
review,
comprehensive
overview
behaviors
reported
is
provided
and
intrinsic
chemical
origins
high
efficiency
toward
unveiled.
The
fundamentals
mechanisms,
along
with
recommended
characterization
techniques
dynamic
process
analyzing
structure
also
interpreted.
Finally,
view
chemistry,
potential
perspectives
facilitate
design
synthesis
durable
electrocatalyst
presented.
Advanced Functional Materials,
Journal Year:
2023,
Volume and Issue:
33(45)
Published: Sept. 1, 2023
Abstract
Oxygen
evolution
reaction
(OER)
remains
a
bottleneck
for
electrocatalytic
water‐splitting
to
generate
hydrogen.
However,
the
traditional
adsorbed
mechanism
(AEM)
possesses
sluggish
kinetics
due
scaling
relationship,
while
lattice
oxygen
(LOM)
triggers
an
unstable
structure
escaping
of
oxygen.
Herein,
proof‐of‐concept
Fe‐Co(OH)
2
/Fe
O
3
heterostructure
is
put
forward,
where
following
AEM
can
complete
rapidly
deprotonation
process
Fe
LOM
trigger
O─O
coupling
step.
Combining
theoretical
and
experimental
investigation
confirmed
that
redistributed
space‐charge
junction
optimize
synergistically
oxygen,
facilitate
synchronously
OER
activity
stability.
As
result,
shows
excellent
performance
with
low
overpotential
only
219
249
mV
reach
current
density
10
100
mA
cm
−2
.
Specifically,
electrocatalyst
maintains
long‐term
stability
h
at
large
This
work
paves
avenue
break
through
limit
conventional
mechanism.
Energy & Environmental Science,
Journal Year:
2023,
Volume and Issue:
16(2), P. 641 - 652
Published: Jan. 1, 2023
In
Ni(OH)
2
,
a
greater
extent
of
band
(3d
electron
states
with
e
g
symmetry)
broadening
can
facilitate
transfer
from
the
electrocatalyst
to
external
circuit,
leading
higher
OER
catalytic
performance.
Advanced Science,
Journal Year:
2023,
Volume and Issue:
10(13)
Published: March 3, 2023
Abstract
Transition‐metal‐based
layered
double
hydroxides
(TM‐LDHs)
nanosheets
are
promising
electrocatalysts
in
the
renewable
electrochemical
energy
conversion
system,
which
regarded
as
alternatives
to
noble
metal‐based
materials.
In
this
review,
recent
advances
on
effective
and
facile
strategies
rationally
design
TM‐LDHs
electrocatalysts,
such
increasing
number
of
active
sties,
improving
utilization
sites
(atomic‐scale
catalysts),
modulating
electron
configurations,
controlling
lattice
facets,
summarized
compared.
Then,
these
fabricated
for
oxygen
evolution
reaction,
hydrogen
urea
oxidation
nitrogen
reduction
small
molecule
oxidations,
biomass
derivatives
upgrading
is
articulated
through
systematically
discussing
corresponding
fundamental
principles
reaction
mechanism.
Finally,
existing
challenges
density
catalytically
future
prospects
nanosheets‐based
each
application
also
commented.
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: Feb. 3, 2024
Abstract
Oxygen
evolution
reaction
(OER)
is
critical
to
renewable
energy
conversion
technologies,
but
the
structure-activity
relationships
and
underlying
catalytic
mechanisms
in
catalysts
are
not
fully
understood.
We
herein
demonstrate
a
strategy
promote
OER
with
simultaneously
achieved
lattice
oxygen
activation
enhanced
local
electric
field
by
dual
doping
of
cations
anions.
Rough
arrays
Fe
F
co-doped
CoO
nanoneedles
constructed,
low
overpotential
277
mV
at
500
mA
cm
−2
achieved.
The
dually
doped
could
cooperatively
tailor
electronic
properties
CoO,
leading
improved
metal-oxygen
covalency
stimulated
activation.
Particularly,
induces
synergetic
effect
tip
enhancement
proximity
effect,
which
effectively
concentrates
OH
−
ions,
optimizes
barrier
promotes
O
2
desorption.
This
work
demonstrates
conceptual
couple
for
effective
electrocatalytic
water
oxidation.
Advanced Functional Materials,
Journal Year:
2022,
Volume and Issue:
32(47)
Published: Sept. 16, 2022
Abstract
High‐entropy
materials
(HEMs)
have
been
in
the
spotlight
as
emerging
catalysts
for
electrochemical
water
splitting.
In
particular,
HEM
feature
multi‐element
active
sites
and
unsaturated
coordination
well
entropy
stabilization
comparison
with
their
single‐element
counterparts.
Herein,
a
comprehensive
overview
of
used
splitting
is
provided,
covering
both
hydrogen
evolution
reaction
(HER)
oxygen
(OER).
Particularly,
review
begins
discussions
concept
structure
HEMs.
addition,
effective
strategies
rationally
designing
HEMs
on
basis
computational
techniques
experimental
aspects
described.
Importantly,
importance
computationally
aided
methods,
that
is,
density
functional
theory
calculations,
high‐throughput
screening,
machine
learning,
to
discovery
design
HEMs,
Furthermore,
applications
field
electrolysis
are
reviewed.
Eventually,
an
outlook
regarding
prospects
future
opportunities
provided.
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: March 20, 2024
Abstract
Ruthenium
dioxide
is
presently
the
most
active
catalyst
for
oxygen
evolution
reaction
(OER)
in
acidic
media
but
suffers
from
severe
Ru
dissolution
resulting
high
covalency
of
Ru-O
bonds
triggering
lattice
oxidation.
Here,
we
report
an
interstitial
silicon-doping
strategy
to
stabilize
highly
sites
RuO
2
while
suppressing
The
representative
Si-RuO
−0.1
exhibits
activity
and
stability
acid
with
a
negligible
degradation
rate
~52
μV
h
−1
800
test
overpotential
226
mV
at
10
mA
cm
−2
.
Differential
electrochemical
mass
spectrometry
(DEMS)
results
demonstrate
that
oxidation
pathway
was
suppressed
by
∼95%
compared
commercial
,
which
responsible
extraordinary
stability.
This
work
supplied
unique
mentality
guide
future
developments
on
Ru-based
oxide
catalysts’
environment.
