Nanomaterials,
Journal Year:
2025,
Volume and Issue:
15(8), P. 600 - 600
Published: April 14, 2025
With
unique
4f
electronic
shells,
rare
earth
metal-based
catalysts
have
been
attracting
tremendous
attention
in
electrocatalysis,
including
oxygen
reduction
reaction
(ORR).
In
particular,
atomically
dispersed
Ce/CeO2-based
explored
extensively
due
to
several
features.
This
review
article
provides
a
comprehensive
understanding
of
(i)
the
significance
effect
Ce
high-spin
state
on
ORR
activity
enhancement
Pt
and
non-pt
electrocatalysts,
(ii)
spatially
confining
stabilizing
ceria
generation
transition
catalysts,
(iii)
experimental
theoretical
evidence
Ce3+
↔
Ce4+
redox
pain
radical
scavenging,
(iv)
electrons
d-band
center
electron
transfer
between
N-doped
carbon
metal
for
enhanced
activity,
(v)
Pt/CeO2/carbon
heterojunctions
stability
electrocatalyst
ORR.
Among
strategies
synthesizing
Ce/CeO2
metal–organic
framework
(MOF)-derived
are
being
perused
tendency
readily
coordinate
with
O-
N-containing
ligands,
which
upon
undergoing
pyrolysis,
results
formation
high
surface
area,
porous
networks
metallic/clusters/nanoparticles
active
sites.
paper
an
overview
recent
advancements
regarding
derived
from
MOF
precursor
fuel
cells
metal–air
battery
applications
we
conclude
insights
into
key
issues
future
development
directions.
Small,
Journal Year:
2024,
Volume and Issue:
20(33)
Published: April 9, 2024
Constructing
multiheteroatom
coordination
structure
in
carbonaceous
substrates
demonstrates
an
effective
method
to
accelerate
the
oxygen
reduction
reaction
(ORR)
of
supported
single-atom
catalyst.
Herein,
novel
etching
route
assisted
by
potassium
thiocyanate
(KCNS)
is
developed
convert
metal-organic
framework
2D
defect-rich
porous
N,S-co-doped
carbon
nanosheets
for
anchoring
atomically
dispersed
iron
sites
as
high-performance
ORR
catalysts
(Fe-SACs).
The
well-designed
KCNS-assisted
can
generate
spatial
confinement
template
direct
nanosheet
formation,
condition
form
structure,
and
additional
sulfur
atoms
coordinate
species.
Spectral
microscopy
analysis
reveals
that
element
Fe-SACs
highly
isolated
on
anchored
nitrogen
unsymmetrical
Fe-S
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 30, 2024
Abstract
Oxygen
electrocatalysis,
as
the
pivotal
circle
of
many
green
energy
technologies,
sets
off
a
worldwide
research
boom
in
full
swing,
while
its
large
kinetic
obstacles
require
remarkable
catalysts
to
break
through.
Here,
based
on
summarizing
reaction
mechanisms
and
situ
characterizations,
structure–activity
relationships
oxygen
electrocatalysts
are
emphatically
overviewed,
including
influence
geometric
morphology
chemical
structures
electrocatalytic
performances.
Subsequently,
experimental/theoretical
is
combined
with
device
applications
comprehensively
summarize
cutting‐edge
according
various
material
categories.
Finally,
future
challenges
forecasted
from
perspective
catalyst
development
applications,
favoring
researchers
promote
industrialization
electrocatalysis
at
an
early
date.
ACS Nano,
Journal Year:
2024,
Volume and Issue:
18(33), P. 21651 - 21684
Published: Aug. 12, 2024
In
order
to
facilitate
electrochemical
oxygen
reactions
in
electrically
rechargeable
zinc-air
batteries
(ZABs),
there
is
a
need
develop
innovative
approaches
for
efficient
electrocatalysts.
Due
their
reliability,
high
energy
density,
material
abundance,
and
ecofriendliness,
ZABs
hold
promise
as
next-generation
storage
conversion
devices.
However,
the
large-scale
application
of
currently
hindered
by
slow
kinetics
reduction
reaction
(ORR)
evolution
(OER).
development
heterostructure-based
electrocatalysts
has
potential
surpass
limitations
imposed
intrinsic
properties
single
material.
This
Account
begins
with
an
explanation
configurations
fundamentals
electrochemistry
air
electrode.
Then,
we
summarize
recent
progress
respect
variety
heterostructures
that
exploit
bifunctional
electrocatalytic
overview
impact
on
ZAB
performance.
The
range
heterointerfacial
engineering
strategies
improving
ORR/OER
performance
includes
tailoring
surface
chemistry,
dimensionality
catalysts,
interfacial
charge
transfer,
mass
transport,
morphology.
We
highlight
multicomponent
design
take
these
features
into
account
create
advanced
highly
active
catalysts.
Finally,
discuss
challenges
future
perspectives
this
important
topic
aim
enhance
activity
batteries.
Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 11, 2025
Abstract
Exploiting
robust
and
high‐efficiency
electrocatalysts
for
sluggish
oxygen
reduction
reaction
(ORR)
is
essential
proton
exchange
membrane
fuel
cells
(PEMFCs)
toward
long‐term
operation
practical
applications,
yet
remains
challenging.
Herein,
the
ordered
PtCo
intermetallic
reported
with
a
Pt‐rich
shell
loaded
on
highly
graphitized
carbon
carrier
(O‐PtCo@GCoNC)
prepared
by
an
impregnation
annealing
strategy.
Systematic
X‐ray
spectroscopic,
operando
electrochemical
techniques
theoretical
calculations
reveal
that
thanks
to
synergistic
interaction
of
core–shell
structure
tailor‐made
Pt
electronic
configuration
carbon,
O‐PtCo@GCoNC
exhibits
significantly
enhanced
activity
stability
ORR.
Crucially,
delivers
much‐enhanced
mass
0.83
A
mg
−1
at
0.9
V
versus
reversible
hydrogen
electrode
(RHE)
in
0.1
m
HClO
4
,
which
only
drops
26.5%
after
70
000
cycles
(0.6–1.0
vs
RHE),
10.8%
10
(1.0–1.5
apparently
overmatching
Pt/C
(0.19
73.7%,
63.1%).
Moreover,
employed
as
cathode
catalyst
H
2
/air
PEMFC
achieves
superb
peak
power
density
(1.04
W
cm
−2
2.06
),
outperforming
(0.86
1.79
).
The
cell
voltage
loss
0.8
28
mV
30
cycles,
outstripping
United
States
Department
Energy
2025
target.
Chemical Science,
Journal Year:
2024,
Volume and Issue:
15(12), P. 4349 - 4357
Published: Jan. 1, 2024
Novel
freestanding
M-PtBiMo
IMSs
were
achieved
via
a
simple
and
effective
one-step
wet
chemical
method.
The
as
highly
efficient
anode
electrocatalysts
boosted
the
activity
stability
toward
EGOR
actual
DEGFCs.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 1, 2024
Abstract
In
recent
years,
aqueous
zinc
ion
batteries
(ZIBs)
with
ultra‐high
safety
and
environmental
friendliness
have
emerged
as
a
promising
candidates
for
energy
storage
conversion
devices.
However,
the
severe
side
reactions
dendrites
issues
discourage
practical
application
of
ZIBs.
Recently,
biopolymer‐based
gel
electrolytes
disclosed
large
potential
in
tackling
these
challenges
ZIBs,
numerous
advancements
reported.
Their
advantages
lie
suppressing
including
hydrogen
evolution
Zn
metal
anode
corrosion,
well
inhibiting
growth
dendrites.
This
review
comprehensively
examines
classification,
structures
properties
electrolytes,
focus
on
hydrogel
derived
from
various
natural
macromolecular
biopolymers,
along
brief
discussion
non‐hydrogel
using
ionic
liquids
or
organic
solutions
solvents.
Subsequently,
preparation
physical
chemical
methods
are
summarized.
Furthermore,
applications
ZIBs
diverse
cathodes
materials
introduced.
Finally,
it
highlights
benefits
excellent
electrochemical
performance
outlining
their
prospects
next
generation
proposing
future
perspectives.
