ACS Applied Energy Materials,
Journal Year:
2023,
Volume and Issue:
6(5), P. 2739 - 2746
Published: Feb. 6, 2023
Developing
a
clean
and
efficient
noble
metal
free
electrocatalyst
for
oxygen
evolution
reaction
(OER)
is
urgently
needed
to
accelerate
water
splitting
green
energy
conversion
systems.
Herein,
we
reported
the
fabrication
of
metal-free
based
on
Zn
Co
loaded
porous
C
decorated
cellulose
acetate-polyaniline
(ZnCo-C/CA-PANI)
electrospun
nanofibers
at
surface
nickel
foam
(NF).
The
smooth
coating
CA-PANI
NF
helps
in
exposing
maximum
fraction
ZnCo-C
uniform
flow
ions
entire
surface,
thus
resulting
high
OH–
adsorption
capability.
designed
ZnCo-C/CA-PANI@NF
electrode
acts
as
an
alkaline
medium
offers
lower
onset
potential
(1.34
V
vs
RHE),
small
Tafel
slope
42
mV/dec,
stability.
These
results
suggest
concept
exploring
more
such
hybrid
materials
that
could
induce
electrocatalytic
sustainable
conversion.
Journal of Materials Chemistry A,
Journal Year:
2023,
Volume and Issue:
11(9), P. 4400 - 4427
Published: Jan. 1, 2023
The
synthetic
strategies,
application
and
future
development
of
non-precious
metal-based
self-supporting
electrodes
for
Zn–air
batteries
have
been
systematically
summarized
according
to
the
recent
research
progress.
Nanoscale,
Journal Year:
2023,
Volume and Issue:
15(28), P. 11777 - 11800
Published: Jan. 1, 2023
Transition
metal
nitrides
(TMNs)
have
become
usable
substitutes
for
precious
metals
such
as
Pt
and
Ir
in
the
field
of
electrocatalysis
because
their
high
electrocatalytic
performance,
conductivity,
good
corrosion
resistance
stability.
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(52)
Published: Nov. 9, 2023
The
active-site
density,
intrinsic
activity,
and
durability
of
Pd-based
materials
for
oxygen
reduction
reaction
(ORR)
are
critical
to
their
application
in
industrial
energy
devices.
This
work
constructs
a
series
carbon-based
rare-earth
(RE)
oxides
(Gd2
O3
,
Sm2
Eu2
CeO2
)
by
using
RE
metal-organic
frameworks
tune
the
ORR
performance
Pd
sites
through
Pd-REx
Oy
interface
interaction.
Taking
Pd-Gd2
/C
as
representative,
it
is
identified
that
strong
coupling
between
Gd2
induces
formation
Pd-O-Gd
bridge,
which
triggers
charge
redistribution
.
screened
exhibits
impressive
with
high
onset
potential
(0.986
VRHE
),
half-wave
(0.877
excellent
stability.
Similar
results
also
found
Pd-Sm2
/C,
Pd-Eu2
Pd-CeO2
catalysts.
Theoretical
analyses
reveal
promotes
electron
transfer
antibonding-orbital
occupancy
Pd-*OH
optimization
*OH
adsorption
rate-determining
step
ORR.
pH-dependent
microkinetic
modeling
shows
close
theoretical
optimal
activity
ORR,
outperforming
Pt
under
same
conditions.
By
its
ascendancy
superior
Zn-air
battery
an
air
cathode,
implying
practicability.
Applied Catalysis B Environment and Energy,
Journal Year:
2023,
Volume and Issue:
343, P. 123584 - 123584
Published: Dec. 1, 2023
The
electrocatalytic
process
of
water
splitting
offers
a
promising
approach
to
produce
sustainable
hydrogen.
However,
the
slow
kinetics
oxygen
evolution
reaction
(OER)
presents
notable
challenge,
especially
in
acidic
environment
proton
exchange
membrane
(PEM)
systems.
Despite
extensive
progress
made
catalyst
development
for
hydrogen
production
through
electrolysis
last
century,
significant
advancements
have
been
accomplished.
quest
OER
catalysts
that
possess
both
high
activity
and
stability,
while
also
being
affordable,
continues
be
challenging.
Currently,
Ru/Ir-based
electrocatalysts
are
only
practical
anode
available.
Therefore,
it
is
crucial
explore
feasible
strategies
enhance
performance
longevity
catalysts.
This
review
comprehensive
assessment
obstacles
prospective
Additionally,
underscores
areas
research
concentration,
providing
valuable
perspectives
future
endeavors
development.
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:
2024,
Volume and Issue:
15(1)
Published: April 22, 2024
Abstract
In-depth
comprehension
and
modulation
of
the
electronic
structure
active
metal
sites
is
crucial
to
enhance
their
intrinsic
activity
electrocatalytic
oxygen
evolution
reaction
(OER)
toward
anion
exchange
membrane
water
electrolyzers
(AEMWEs).
Here,
we
elaborate
a
series
amorphous
oxide
catalysts
(FeCrO
x
,
CoCrO
NiCrO
)
with
high
performance
AEMWEs
by
high-valent
chromium
dopant.
We
discover
that
positive
effect
transition
from
low
valence
Co
site
on
adsorption
energy
intermediate
lower
oxidation
barrier
key
factor
for
its
increased
synchrotron
radiation
in-situ
techniques.
Particularly,
anode
catalyst
achieves
current
density
1.5
A
cm
−2
at
2.1
V
maintains
over
120
h
attenuation
less
than
4.9
mV
−1
in
AEMWE
testing.
Such
exceptional
demonstrates
promising
prospect
industrial
application
providing
general
guidelines
design
high-efficiency
systems.
