Nano-Micro Letters,
Journal Year:
2023,
Volume and Issue:
15(1)
Published: Feb. 16, 2023
The
electrocatalytic
water
splitting
technology
can
generate
high-purity
hydrogen
without
emitting
carbon
dioxide,
which
is
in
favor
of
relieving
environmental
pollution
and
energy
crisis
achieving
neutrality.
Electrocatalysts
effectively
reduce
the
reaction
barrier
increase
efficiency.
Facet
engineering
considered
as
a
promising
strategy
controlling
ratio
desired
crystal
planes
on
surface.
Owing
to
anisotropy,
with
different
orientations
usually
feature
facet-dependent
physical
chemical
properties,
leading
differences
adsorption
energies
oxygen
or
intermediates,
thus
exhibit
varied
activity
toward
evolution
(HER)
(OER).
In
this
review,
brief
introduction
basic
concepts,
fundamental
understanding
mechanisms
well
key
evaluating
parameters
for
both
HER
OER
are
provided.
formation
facets
comprehensively
overviewed
aiming
give
scientific
theory
guides
realize
dominant
planes.
Subsequently,
three
strategies
selective
capping
agent,
etching
coordination
modulation
tune
summarized.
Then,
we
present
an
overview
significant
contributions
facet-engineered
catalysts
HER,
OER,
overall
splitting.
particular,
highlight
that
density
functional
calculations
play
indispensable
role
unveiling
structure–activity
correlation
between
plane
catalytic
activity.
Finally,
remaining
challenges
provided
future
prospects
designing
advanced
electrocatalysts
discussed.
Chemical Reviews,
Journal Year:
2024,
Volume and Issue:
124(7), P. 3694 - 3812
Published: March 22, 2024
Electrocatalytic
water
splitting
driven
by
renewable
electricity
has
been
recognized
as
a
promising
approach
for
green
hydrogen
production.
Different
from
conventional
strategies
in
developing
electrocatalysts
the
two
half-reactions
of
(e.g.,
and
oxygen
evolution
reactions,
HER
OER)
separately,
there
growing
interest
designing
bifunctional
electrocatalysts,
which
are
able
to
catalyze
both
OER.
In
addition,
considering
high
overpotentials
required
OER
while
limited
value
produced
oxygen,
is
another
rapidly
exploring
alternative
oxidation
reactions
replace
hybrid
toward
energy-efficient
generation.
This
Review
begins
with
an
introduction
on
fundamental
aspects
splitting,
followed
thorough
discussion
various
physicochemical
characterization
techniques
that
frequently
employed
probing
active
sites,
emphasis
reconstruction
during
redox
electrolysis.
The
design,
synthesis,
performance
diverse
based
noble
metals,
nonprecious
metal-free
nanocarbons,
overall
acidic
alkaline
electrolytes,
thoroughly
summarized
compared.
Next,
their
application
also
presented,
wherein
anodic
include
sacrificing
agents
oxidation,
pollutants
oxidative
degradation,
organics
upgrading.
Finally,
concise
statement
current
challenges
future
opportunities
presented
hope
guiding
endeavors
quest
sustainable
Advanced Energy Materials,
Journal Year:
2022,
Volume and Issue:
12(14)
Published: Feb. 17, 2022
Abstract
Proton
exchange
membrane
water
electrolyzer
(PEMWE)
technology
is
of
interest
in
the
context
electrocatalytic
hydrogen
generation
from
renewable
energies.
It
has
benefits
immediate
response,
higher
proton
conductivity,
lower
ohmic
losses,
and
gas
crossover
rate.
One
key
step
toward
to
large‐scale
application,
development
highly
efficient,
durable,
compatible
anodic
oxygen
evolution
electrocatalysts
acidic
media
decrease
usage
expensive
scarce
precious
metals.
Within
this
scenario,
an
in‐depth
understanding
reaction
mechanisms
including
adsorption
mechanism
lattice
first
provided
aid
innovative
materials
elucidate
origin
catalyst
degradation.
Second,
recent
progress
acid
reviewed
with
emphasis
on
underlying
structure–performance
relationships.
Third,
current
application
status
research
PEMWEs
along
representative
examples
are
discussed.
Last,
remaining
challenges
promising
insights
proposed
inspire
future
studies
production
energy.
Advanced Functional Materials,
Journal Year:
2022,
Volume and Issue:
32(26)
Published: March 23, 2022
Abstract
Developing
low‐cost
and
highly
efficient
earth‐abundant
oxygen
evolution
reaction
(OER)
electrocatalysts
via
an
energy‐
time‐saving
method
is
of
great
significance
to
the
generation
H
2
from
electrochemical
water
splitting,
which
desirable
but
still
challenging.
Herein,
a
one‐step
route
in
situ
grow
S‐doped
FeOOH
vertical
nanosheets
on
iron
foam
(IF)
20
min
under
room
temperature
shown.
This
facile
ultrafast
effectively
modifies
surface
IF
into
layer,
full‐Fe
electrode
(S‐FeOOH/IF)
achieved.
Systematic
experiments
characterizations
demonstrate
that
redox
reactivities
for
both
lattice
are
sufficiently
activated,
leading
dramatically
improved
intrinsic
OER
activity.
The
as‐obtained
S‐FeOOH/IF
exhibits
fascinating
performance
with
low
overpotential
244
at
10
mA
cm
−2
.
work
affords
engineering
strategy
drive
commercial
cost‐efficient
robust
oxidation,
has
important
implications
clean
production
through
low‐carbon
environmentally
friendly
route.
Energy & Environmental Science,
Journal Year:
2023,
Volume and Issue:
16(11), P. 4926 - 4943
Published: Jan. 1, 2023
Systematic
insights
into
the
recent
attainments,
limitations,
and
future
directions
of
hydrogen
production,
storage,
delivery,
usage
are
provided,
aiming
at
offering
critical
guidance
for
establishment
a
society.
Nature Communications,
Journal Year:
2023,
Volume and Issue:
14(1)
Published: May 2, 2023
Abstract
Oxygen
evolution
reaction
catalysts
capable
of
working
efficiently
in
acidic
media
are
highly
demanded
for
the
commercialization
proton
exchange
membrane
water
electrolysis.
Herein,
we
report
a
Zn-doped
RuO
2
nanowire
array
electrocatalyst
with
outstanding
catalytic
performance
oxygen
under
conditions.
Overpotentials
as
low
173,
304,
and
373
mV
achieved
at
10,
500,
1000
mA
cm
−2
,
respectively,
robust
stability
reaching
to
h
10
.
Experimental
theoretical
investigations
establish
clear
synergistic
effect
Zn
dopants
vacancies
on
regulating
binding
configurations
oxygenated
adsorbates
active
centers,
which
then
enables
an
alternative
Ru−Zn
dual-site
oxide
path
reaction.
Due
change
pathways,
energy
barrier
rate-determining
step
is
reduced,
over-oxidation
Ru
sites
alleviated.
As
result,
activity
significantly
enhanced.
Small,
Journal Year:
2021,
Volume and Issue:
18(7)
Published: Nov. 5, 2021
Abstract
High‐entropy
alloys
(HEAs)
are
expected
to
function
well
as
electrocatalytic
materials,
owing
their
widely
adjustable
composition
and
unique
physical
chemical
properties.
Recently,
HEA
catalysts
extensively
studied
in
the
field
of
electrocatalysis;
this
motivated
authors
investigate
relationship
between
structure
HEAs
performance.
In
review,
latest
advances
electrocatalysts
systematically
summarized,
with
special
focus
on
nitrogen
fixation,
carbon
cycle,
water
splitting,
fuel
cells;
addition,
by
combining
characterization
analysis
microstructures,
rational
design
strategies
for
optimizing
electrocatalysts,
including
controllable
preparation,
component
regulation,
strain
engineering,
defect
theoretical
prediction
proposed.
Moreover,
existing
issues
future
trends
predicted,
which
will
help
further
develop
these
high‐entropy
materials.
Nature Communications,
Journal Year:
2023,
Volume and Issue:
14(1)
Published: Sept. 27, 2023
The
oxygen
evolution
reaction
is
known
to
be
a
kinetic
bottleneck
for
water
splitting.
Triggering
the
lattice
oxidation
mechanism
(LOM)
can
break
theoretical
limit
of
conventional
adsorbate
and
enhance
kinetics,
yet
unsatisfied
stability
remains
grand
challenge.
Here,
we
report
high-entropy
MnFeCoNiCu
layered
double
hydroxide
decorated
with
Au
single
atoms
O
vacancies
(AuSA-MnFeCoNiCu
LDH),
which
not
only
displays
low
overpotential
213
mV
at
10
mA
cm-2
high
mass
activity
732.925
A
g-1
250
in
1.0
M
KOH,
but
also
delivers
good
700
h
continuous
operation
~100
cm-2.
Combining
advanced
spectroscopic
techniques
density
functional
theory
calculations,
it
demonstrated
that
synergistic
interaction
between
incorporated
leads
an
upshift
2p
band
weakens
metal-O
bond,
thus
triggering
LOM,
reducing
energy
barrier,
boosting
intrinsic
activity.
Journal of the American Chemical Society,
Journal Year:
2023,
Volume and Issue:
145(32), P. 17995 - 18006
Published: Aug. 7, 2023
The
acidic
oxygen
evolution
reaction
(OER)
has
long
been
the
bottleneck
of
proton
exchange
membrane
water
electrolyzers
given
its
harsh
oxidative
and
corrosive
environments.
Herein,
we
suggest
an
effective
strategy
to
greatly
enhance
both
OER
activity
stability
Co3O4
spinel
by
atomic
Ru
selective
substitution
on
octahedral
Co
sites.
resulting
highly
symmetrical
Ru-O-Co
collaborative
coordination
with
strong
electron
coupling
effect
enables
direct
dioxygen
radical
pathway.
Indeed,
experiments
theoretical
calculations
reveal
a
thermodynamically
breakthrough
heterogeneous
diatomic
mechanism.
Additionally,
active
units
are
well-maintained
upon
thanks
transfer
from
surrounding
electron-enriched
tetrahedral
atoms
via
bridging
bonds
that
suppresses
overoxidation
thus
dissolution
species.
Consequently,
prepared
catalyst,
even
low
mass
loading
ca.
42.8
μg
cm-2,
exhibits
attractive
performance
overpotential
200
mV
potential
decay
rate
0.45
h-1
at
10
mA
cm-2.
Our
work
suggests
significantly
low-cost
electrocatalysts.
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.
