ChemCatChem,
Journal Year:
2024,
Volume and Issue:
16(12)
Published: Feb. 13, 2024
Abstract
During
the
past
few
years,
single‐atom
catalysts
(SACs)
have
attracted
considerable
attention
in
electrolysis
due
to
their
outstanding
catalytic
performance
and
efficient
atomic
utilization.
SACs
exhibit
a
simple
structure,
high
activity,
consistent
scaling
relationships
for
single
sites,
low
metal
content
but
practical
applications
are
still
limited.
Dual
(DACs),
which
feature
excellent
selectivity,
utilization
efficiency,
remarkable
stability,
emerging
as
new
frontiers
heterogeneous
electrocatalysis.
They
increase
activity
by
promoting
synergistic
effects
between
metal‐active
sites.
In
this
paper,
we
present
comprehensive
overview
of
latest
developments
dual‐atom
oxygen
evolution
reaction
(OER)
reduction
(ORR).
addition,
explore
differences
homonuclear
heteronuclear
configurations,
emergence
single/dual‐site
catalysts,
methods
currently
used
synthesis.
Lastly,
review
discusses
several
perspectives
advancing
development
OER
ORR
Advanced Sustainable Systems,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 17, 2025
Abstract
Despite
significant
advancements
in
noble
metal‐free
trimetallic
MOF‐based
electrocatalysts
for
efficient
oxygen
evolution
reaction
(OER),
limited
attention
is
given
to
identify
which
metal
will
play
most
role
controlling
OER
performance.
Thus,
address
this
gap,
herein
ternary
metallic
(FeCoMn)
squarate‐based
MOF
via
a
solvothermal
approach
synthesized.
Additionally,
machine
learning
(ML)
algorithms
are
employed
on
experimental
datasets
during
synthesis
strategy
optimize
concentrations
more
swiftly
and
efficiently
design
highly
squarate
electrocatalysts.
Interestingly,
ML
optimization
has
identified
Fe
as
key
element
significantly
influencing
efficacy.
To
further
boost
efficacy,
ML‐optimized
FeCoMn
drop‐casted
onto
conductive
electrospun
polycaprolactone
(PC)
nanofibers,
facilitating
smooth,
uniform
flow
of
ions
electrons
across
the
entire
surface,
maximizing
exposed
active
sites,
all
anchored
sponge‐like
Ni
foam
(NF)
substrate.
Results
reveal
that
FeCoMn/PC
displays
high
electrocatalytic
activity
with
lower
overpotential
(170
mV
at
current
density
10
mA
cm
−2
),
Tafel
slope
66.6.8
dec
−1
,
compared
(overpotential
180
mV,
89.3
).
best
knowledge,
first
time
optimized
FeCoMn/PC‐based
electrocatalyst
reported.
Scientific Reports,
Journal Year:
2025,
Volume and Issue:
15(1)
Published: March 28, 2025
Abstract
Wide
range
of
noble
metal
free
bimetallic
and
trimetallic
based
electrocatalysts
have
been
synthesized
to
develop
efficient
oxygen
evolution
reaction
(OER)
systems
to-date,
however,
determine
which
part
plays
a
significant
role
in
controlling
OER
efficacy
remains
very
challenging.
To
address
this
issue,
herein
we
employed
machine
learning
(ML)
for
the
first
time
element,
thus
leading
development
an
optimized
electrocatalyst.
Briefly,
designed
novel,
simple
ML
sustainable
electrocatalyst
on
Co
3
O
4
/NiO
popsicle
sticks
(CNPS)
infused
polyaniline/cellulose
acetate
(a
biopolymer)
(PNCA)
electrospun
nanofibers
supported
nickel
foam
(NF).
CNPS
PNCA
(CNPS@PNCA)
electrode
offers
maximum
homogenous
exposition
active
sites
shows
high
activity
by
exhibiting
low
onset
potential
(1.41
V
vs.
RHE),
overpotential
(237
mV
at
10
mA
cm
−2
)
Tafel
slope
62.1
dec
−1
.
Additionally,
it
better
stability
more
than
100
h
is
consistent
with
reported
literature.
