ACS Catalysis,
Год журнала:
2021,
Номер
11(16), С. 10537 - 10552
Опубликована: Авг. 9, 2021
Understanding
the
oxygen
evolution
reaction
(OER)
activity
and
stability
of
NiFe-based
materials
is
important
for
achieving
low-cost
highly
efficient
electrocatalysts
practical
water
splitting.
Here,
we
report
roles
Ni
Fe
on
OER
metallic
NiFe
pure
thin
films
in
alkaline
media.
Our
results
support
that
Ni(OH)2/NiOOH
does
not
contribute
to
directly,
but
it
serves
as
an
ideal
host
incorporation,
which
essential
obtaining
high
activity.
Furthermore,
availability
electrolyte
found
be
necessary
both
maintain
enhanced
performance,
while
presence
detrimental
kinetics.
The
impacts
species
present
KOH
are
consistent
with
dissolution/re-deposition
mechanism
proposed.
Stability
studies
show
will
degrade
under
prolonged
continuous
operation.
Satisfactory
can,
however,
achieved
intermittent
operation,
electrocatalyst
cycled
between
degraded
recovered
states.
Accordingly,
two
ranges,
is,
recovery
range
degradation
range,
Compared
operation
(i.e.,
range)
generates
a
higher
NiOOH
content
electrocatalyst,
likely
related
deactivation.
If
electrode
works
certain
period,
at
sufficiently
low
reduction
potential,
where
Ni3+
reduced
Ni2+,
can
maintained
even
improved
if
also
electrolyte.
Chemical Society Reviews,
Год журнала:
2022,
Номер
51(11), С. 4583 - 4762
Опубликована: Янв. 1, 2022
Replacing
fossil
fuels
with
energy
sources
and
carriers
that
are
sustainable,
environmentally
benign,
affordable
is
amongst
the
most
pressing
challenges
for
future
socio-economic
development.
ACS Catalysis,
Год журнала:
2020,
Номер
10(16), С. 9086 - 9097
Опубликована: Июль 20, 2020
The
rational
design
of
oxygen
evolution
reaction
(OER)
catalysts
from
the
perspective
electronic
structure
is
highly
desirable
to
optimize
electrocatalytic
activity.
Monometallic
phosphides
such
as
Ni2P
have
been
shown
be
active
toward
OER,
but
their
performance
remains
unsatisfactory.
Herein,
guided
by
theoretical
mechanism
study
intrinsic
high
electroactivity
revealed
in
d-band
center
(Ed)
theory,
Fe-substituted
((NixFe1–x)2P)
nanosheets
grown
directly
on
NiFe
foam
are
designed
and
synthesized.
As
OER
electrocatalysts
alkaline
media,
(NixFe1–x)2P
show
an
overpotential
166
mV
deliver
current
density
10
mA
cm–2,
which
superior
most
reported
transition-metal-based
catalysts.
Combining
DFT
simulations
with
experiments
reveals
that
enhanced
activity
results
moderate
rise
Ed
energy
levels,
balances
adsorption
desorption
capacities
oxygen-containing
intermediates
(*O,
*OH,
*OOH).
This
work
supplies
valuable
insights
for
construction
efficient
doped
under
guidance
theory.
Journal of Materials Chemistry A,
Год журнала:
2021,
Номер
9(9), С. 5320 - 5363
Опубликована: Янв. 1, 2021
This
review
summarizes
recent
advances
relating
to
transition
metal
sulfide
(TMS)-based
bifunctional
electrocatalysts,
providing
guidelines
for
the
design
and
fabrication
of
TMS-based
catalysts
practical
application
in
water
electrolysis.
Chemical Society Reviews,
Год журнала:
2021,
Номер
50(17), С. 9817 - 9844
Опубликована: Янв. 1, 2021
This
review
summarizes
the
recent
progress
related
to
field
of
doping
regulation
in
transition
metal
compounds,
aiming
give
an
overview
this
strategy
for
designing
high-performance
catalysts
towards
electrocatalytic
applications.
Chemical Reviews,
Год журнала:
2023,
Номер
123(9), С. 6257 - 6358
Опубликована: Март 21, 2023
The
oxygen
evolution
reaction
(OER)
and
reduction
(ORR)
are
core
steps
of
various
energy
conversion
storage
systems.
However,
their
sluggish
kinetics,
i.e.,
the
demanding
multielectron
transfer
processes,
still
render
OER/ORR
catalysts
less
efficient
for
practical
applications.
Moreover,
complexity
catalyst–electrolyte
interface
makes
a
comprehensive
understanding
intrinsic
mechanisms
challenging.
Fortunately,
recent
advances
in
situ/operando
characterization
techniques
have
facilitated
kinetic
monitoring
under
conditions.
Here
we
provide
selected
highlights
mechanistic
studies
with
main
emphasis
placed
on
heterogeneous
systems
(primarily
discussing
first-row
transition
metals
which
operate
basic
conditions),
followed
by
brief
outlook
molecular
catalysts.
Key
sections
this
review
focused
determination
true
active
species,
identification
sites,
reactive
intermediates.
For
in-depth
insights
into
above
factors,
short
overview
metrics
accurate
characterizations
is
provided.
A
combination
obtained
time-resolved
information
reliable
activity
data
will
then
guide
rational
design
new
Strategies
such
as
optimizing
restructuring
process
well
overcoming
adsorption-energy
scaling
relations
be
discussed.
Finally,
pending
current
challenges
prospects
toward
development
homogeneous
presented.
Journal of Materials Chemistry A,
Год журнала:
2020,
Номер
9(6), С. 3180 - 3208
Опубликована: Дек. 11, 2020
The
progress
in
the
design
strategies
and
synthetic
mechanisms
for
each
class
of
NiFe
LDH
electrocatalysts
as
well
key
trends
structural
characterizations
catalyzing
water
splitting
process
are
discussed.
Energy & environment materials,
Год журнала:
2022,
Номер
6(5)
Опубликована: Май 28, 2022
Electrochemical
water
splitting
represents
one
of
the
most
promising
technologies
to
produce
green
hydrogen,
which
can
help
realize
goal
achieving
carbon
neutrality.
While
substantial
efforts
on
a
laboratory
scale
have
been
made
for
understanding
fundamental
catalysis
and
developing
high‐performance
electrocatalysts
two
half‐reactions
involved
in
electrocatalysis,
much
less
attention
has
paid
doing
relevant
research
larger
scale.
For
example,
few
such
researches
done
an
industrial
Herein,
we
review
very
recent
endeavors
bridge
gaps
between
applications
electrolysis.
We
begin
by
introducing
fundamentals
electrochemical
then
present
comparisons
testing
protocol,
figure
merit,
catalyst
interest,
manufacturing
cost
industry‐based
water‐electrolysis
research.
Special
is
tracking
surface
reconstruction
process
identifying
real
catalytic
species
under
different
conditions,
highlight
significant
distinctions
corresponding
mechanisms.
Advances
designs
industry‐relevant
electrolysis
are
also
summarized,
reveal
progress
moving
practical
forward
accelerating
synergies
material
science
engineering.
Perspectives
challenges
electrocatalyst
design
strategies
proposed
finally
further
lab‐scale
large‐scale
electrocatalysis
applications.
ACS Catalysis,
Год журнала:
2021,
Номер
11(20), С. 12485 - 12509
Опубликована: Сен. 27, 2021
Electrocatalytic
water
splitting
is
a
sustainable
way
to
produce
hydrogen
energy,
but
the
oxygen
evolution
reaction
(OER)
at
anode
has
sluggish
kinetics
and
low
energy
conversion
efficiency,
which
major
bottleneck
for
large-scale
production.
The
design
synthesis
of
robust
low-cost
OER
catalysts
are
crucial
OER.
NiCo-based
electrocatalysts
have
suitable
atomic
electronic
structures,
show
high
activity
stability
during
process.
Recently,
significant
progress
been
made
in
regulating
structure
composition
understanding
nature
catalysis,
especially
mechanism,
catalytic
active
sites,
structure–activity
relationship.
In
this
work,
we
summarized
discussed
latest
development
OER,
with
particular
emphasis
on
catalyst
synthesis,
strategies
boosting
performance,
catalysis
from
experimental
theoretical
perspectives.
some
descriptors,
relationships
based
unveiled.
Finally,
challenges
futuristic
outlooks
improving
performance
proposed,
hope
review
can
provide
guidance
more
efficient
electrocatalysts.
