Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
14(39)
Published: Aug. 6, 2024
Abstract
Rapid
cost
reduction
of
green
hydrogen
is
essential
for
the
large‐scale
deployment
hydrogen‐based
energy
system.
A
major
component
in
achieving
this
development
advanced
water
electrolyzers.
Sluggish
oxygen
evolution
reaction
(OER)
bottleneck
electrolysis,
and
tremendous
efforts
have
been
devoted
to
develop
electrocatalysts
that
accelerate
OER
kinetics.
Recent
advances
highlighted
potential
precious
metal‐free
electrocatalyst
capable
stable
operation
at
current
densities
above
1
cm
2
.
This
brings
an
opportunity
constructing
new‐generation
electrolyzer
with
lower
higher
productivity.
However,
such
high
operating
presents
new
challenges.
review
summarize
recent
progress
high‐performance
catalysts,
identifies
key
factors
can
be
leveraged
enhance
catalyst
activity.
These
include
interface/surface
engineering,
amorphous
crystal
phase
coupling,
hierarchical
structure
design,
structural
reconstruction
conversion,
entropy
catalyst,
defect
engineering.
Additionally,
pressing
challenges
largely
ignored
previous
research
addressed,
as
sustaining
long‐term
stability
under
crucial
conditions,
disadvantages
immobilized
powder
electrocatalysts,
electrode
scale
necessity
designing
innovative
cell
designs
advance
characterization
techniques.
Chemical Reviews,
Journal Year:
2023,
Volume and Issue:
123(22), P. 12507 - 12593
Published: Nov. 1, 2023
Electrocatalysis
underpins
the
renewable
electrochemical
conversions
for
sustainability,
which
further
replies
on
metallic
nanocrystals
as
vital
electrocatalysts.
Intermetallic
have
been
known
to
show
distinct
properties
compared
their
disordered
counterparts,
and
long
explored
functional
improvements.
Tremendous
progresses
made
in
past
few
years,
with
notable
trend
of
more
precise
engineering
down
an
atomic
level
investigation
transferring
into
practical
membrane
electrode
assembly
(MEA),
motivates
this
timely
review.
After
addressing
basic
thermodynamic
kinetic
fundamentals,
we
discuss
classic
latest
synthetic
strategies
that
enable
not
only
formation
intermetallic
phase
but
also
rational
control
other
catalysis-determinant
structural
parameters,
such
size
morphology.
We
demonstrate
emerging
nanomaterials
potentially
advancement
energy
electrocatalysis.
Then,
state-of-the-art
characterizations
representative
electrocatalysts
emphasis
oxygen
reduction
reaction
evaluated
a
MEA
setup.
summarize
review
by
laying
out
existing
challenges
offering
perspective
future
research
directions
toward
practicing
conversions.
Nano-Micro Letters,
Journal Year:
2023,
Volume and Issue:
16(1)
Published: Nov. 30, 2023
The
formation
of
multiple
oxygen
intermediates
supporting
efficient
evolution
reaction
(OER)
are
affinitive
with
hydroxyl
adsorption.
However,
ability
the
catalyst
to
capture
and
maintain
continuous
supply
at
active
sits
remains
a
tremendous
challenge.
Herein,
an
affordable
Ni
Nano-Micro Letters,
Journal Year:
2024,
Volume and Issue:
16(1)
Published: July 5, 2024
Green
hydrogen
from
electrolysis
of
water
has
attracted
widespread
attention
as
a
renewable
power
source.
Among
several
production
methods,
it
become
the
most
promising
technology.
However,
there
is
no
large-scale
system
currently
that
can
compete
with
conventional
fossil
fuel
production.
Renewable
energy
electrocatalytic
splitting
an
ideal
technology
environmental
cleanliness
protection
and
good
purity,
which
meet
requirements
future
development.
This
review
summarizes
introduces
current
status
by
three
aspects:
electricity,
catalyst
electrolyte.
In
particular,
present
situation
latest
progress
key
sources
power,
catalytic
materials
electrolyzers
for
are
introduced.
Finally,
problems
generation
electrolytic
directions
next-generation
green
in
discussed
outlooked.
It
expected
this
will
have
important
impact
on
field
water.
Nano-Micro Letters,
Journal Year:
2024,
Volume and Issue:
16(1)
Published: Feb. 14, 2024
Abstract
The
metal-lightweighted
electrocatalysts
for
water
splitting
are
highly
desired
sustainable
and
economic
hydrogen
energy
deployments,
but
challengeable.
In
this
work,
a
low-content
Ni-functionalized
approach
triggers
the
high
capability
of
black
phosphorene
(BP)
with
oxygen
evolution
reaction
(HER/OER)
bifunctionality.
Through
facile
in
situ
electro-exfoliation
route,
ionized
Ni
sites
covalently
functionalized
BP
nanosheets
electron
redistribution
controllable
metal
contents.
It
is
found
that
as-fabricated
Ni-BP
can
drive
much
enhanced
HER
OER
activities.
1.0
M
KOH
electrolyte,
optimized
1.5
wt%
have
readily
achieved
low
overpotentials
136
mV
230
at
10
mA
cm
−2
.
Moreover,
bonding
between
P
has
also
strengthened
catalytic
stability
electrocatalyst,
stably
delivering
overall
50
h
20
Theoretical
calculations
revealed
Ni–P
covalent
binding
regulate
electronic
structure
optimize
barrier
to
improve
activity
effectively.
This
work
confirms
suitable
candidate
electrocatalytic
splitting,
provides
effective
strategies
constructing
electrocatalysts.
Nano-Micro Letters,
Journal Year:
2024,
Volume and Issue:
16(1)
Published: April 30, 2024
Durable
and
efficient
bi-functional
catalyst,
that
is
capable
of
both
oxygen
evolution
reaction
hydrogen
under
acidic
condition,
are
highly
desired
for
the
commercialization
proton
exchange
membrane
water
electrolysis.
Herein,
we
report
a
robust
L-Ru/HfO
Chemical Society Reviews,
Journal Year:
2024,
Volume and Issue:
53(14), P. 7392 - 7425
Published: Jan. 1, 2024
Descriptors
play
a
crucial
role
in
electrocatalysis
as
they
can
provide
valuable
insights
into
the
electrochemical
performance
of
energy
conversion
and
storage
processes.
They
allow
for
understanding
different
catalytic
activities
enable
prediction
better
catalysts
without
relying
on
time-consuming
trial-and-error
approaches.
Hence,
this
comprehensive
review
focuses
highlighting
significant
advancements
commonly
used
descriptors
critical
electrocatalytic
reactions.
First,
fundamental
reaction
processes
key
intermediates
involved
several
reactions
are
summarized.
Subsequently,
three
types
classified
introduced
based
catalysts.
These
include
d-band
center
descriptors,
readily
accessible
intrinsic
property
spin-related
all
which
contribute
to
profound
behavior.
Furthermore,
multi-type
that
collectively
determine
also
Finally,
we
discuss
future
envisioning
their
potential
integrate
multiple
factors,
broaden
application
scopes,
synergize
with
artificial
intelligence
more
efficient
catalyst
design
discovery.
Nano-Micro Letters,
Journal Year:
2024,
Volume and Issue:
17(1)
Published: Sept. 25, 2024
Abstract
Green
hydrogen
from
water
splitting
has
emerged
as
a
critical
energy
vector
with
the
potential
to
spearhead
global
transition
fossil
fuel-independent
society.
The
field
of
catalysis
been
revolutionized
by
single-atom
catalysts
(SACs),
which
exhibit
unique
and
intricate
interactions
between
atomically
dispersed
metal
atoms
their
supports.
Recently,
bimetallic
SACs
(bimSACs)
have
garnered
significant
attention
for
leveraging
synergistic
functions
two
ions
coordinated
on
appropriately
designed
BimSACs
offer
an
avenue
rich
metal–metal
metal–support
cooperativity,
potentially
addressing
current
limitations
in
effectively
furnishing
transformations
involve
synchronous
proton–electron
exchanges,
substrate
activation
reversible
redox
cycles,
simultaneous
multi-electron
transfer,
regulation
spin
states,
tuning
electronic
properties,
cyclic
states
low
energies.
This
review
aims
encapsulate
growing
advancements
bimSACs,
emphasis
pivotal
role
generation
via
splitting.
We
subsequently
delve
into
advanced
experimental
methodologies
elaborate
characterization
SACs,
elucidate
discuss
local
coordination
environment.
Overall,
we
present
comprehensive
discussion
deployment
bimSACs
both
evolution
reaction
oxygen
reaction,
half-reactions
electrolysis
process.
