National Science Review,
Journal Year:
2024,
Volume and Issue:
11(11)
Published: Oct. 15, 2024
ABSTRACT
An
in-depth
understanding
of
electrocatalytic
mechanisms
is
essential
for
advancing
electrocatalysts
the
oxygen
evolution
reaction
(OER).
The
emerging
oxide
pathway
mechanism
(OPM)
streamlines
direct
O–O
radical
coupling,
circumventing
formation
vacancy
defects
featured
in
lattice
(LOM)
and
bypassing
additional
intermediates
(*OOH)
inherent
to
adsorbate
(AEM).
With
only
*O
*OH
as
intermediates,
OPM-driven
stand
out
their
ability
disrupt
traditional
scaling
relationships
while
ensuring
stability.
This
review
compiles
latest
significant
advances
OPM-based
electrocatalysis,
detailing
design
principles,
synthetic
methods,
sophisticated
techniques
identify
active
sites
pathways.
We
conclude
with
prospective
challenges
opportunities
electrocatalysts,
aiming
advance
field
into
a
new
era
by
overcoming
constraints.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 9, 2024
Abstract
Spinel
oxides
have
emerged
as
highly
active
catalysts
for
the
oxygen
evolution
reaction
(OER).
Owing
to
covalency
competition,
OER
process
on
spinel
often
follows
an
arduous
adsorbate
mechanism
(AEM)
pathway.
Herein,
we
propose
a
novel
rare‐earth
sites
substitution
strategy
tune
lattice
redox
of
and
bypass
AEM
scaling
relationship
limitation.
Taking
NiCo
2
O
4
model,
incorporation
Ce
into
octahedral
site
induces
formation
Ce−O−M
(M=Ni,
Co)
bridge,
which
triggers
charge
redistribution
within
.
The
developed
Ce−NiCo
exhibits
remarkable
activity
with
low
overpotential,
satisfactory
electrochemical
stability,
good
practicability
in
anion‐exchange
membrane
water
electrolyzer.
Theoretical
analyses
reveal
that
surface
more
favorable
(LOM)
pathway
non‐concerted
proton‐electron
transfers
compared
pure
,
also
verified
by
pH‐dependent
behavior
situ
Raman
analysis.
18
O‐labeled
mass
spectrometry
provides
direct
evidence
released
during
originates
from
We
discover
electron
delocalization
f
states
through
favoring
antibonding
state
occupation
Ni−O
bonding
[Ce−O−Ni]
unit
site,
thereby
activating
OER.
This
work
new
perspective
designing
offers
significant
insights
rare‐earth‐enhanced
LOM
mechanism.
Advanced Energy Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 9, 2025
Abstract
Reversible
proton
ceramic
cells
(R‐PCCs)
offer
a
transformative
solution
for
dual
functionality
in
power
generation
and
energy
storage.
However,
their
potential
is
currently
obstacles
by
the
lack
of
high‐performance
air
electrodes
combining
high
electrocatalytic
activity
with
durability.
Here,
an
innovative
electrode
composed
high‐entropy
driven
self‐assembled
xNiO‐Pr
0.2
La
Ba
Sr
Ca
Fe
0.8
Ni
0.2−x
O
3−δ
(N‐XFN)
composites
presented,
which
result
from
unique
lattice
distortion
effects
inherent
perovskites.
The
experimental
results
coupled
density
functional
theory
(DFT)
calculations
verify
that
at
A‐site
significantly
induces
NiO
nanoparticles
exsolved
B‐site,
promoting
formation
biphasic
composite
structure
dramatically
increases
electrochemical
active
sites.
Remarkably,
R‐PCCs
using
N‐XFN
achieve
impressive
peak
1.30
W
cm
−2
fuel
cell
mode
current
‐2.52
A
1.3
V
electrolysis
650
°C.
In
addition,
show
excellent
stability
reversibility
over
830
h,
including
500
h
330
reversible
operation
This
research
provides
important
insights
into
design
perovskites,
paving
way
advanced
technology.
ACS Omega,
Journal Year:
2025,
Volume and Issue:
10(4), P. 3282 - 3303
Published: Jan. 21, 2025
Scientists
worldwide
have
been
inspecting
hydrogen
production
routes
and
showing
the
importance
of
developing
new
functional
materials
in
this
domain.
Numerous
research
articles
published
past
few
years,
which
require
records
analysis
for
a
comprehensive
bibliometric
bibliographic
review
low-carbon
production.
Hence,
data
set
297
publications
was
selected
after
filtering
journal
papers
since
2010.
The
search
keywords
Scopus
Database
were
"green
hydrogen"
"low
carbon
materials".
analyzed
using
R
Bibliometrix
package.
This
made
it
possible
to
determine
total
annual
publication
rate
segregate
by
country,
author,
journal,
institution.
With
general
upward
trend
number
publications,
China
identified
as
leading
country
on
subject,
followed
Germany
Korea.
Keyword
chronological
evolution
several
important
related
topic
showed
focus
water
splitting
H2
Finally,
provides
future
directions
technologies
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
36(6)
Published: Nov. 21, 2023
Abstract
Molybdenum
disulfide
(MoS
2
)
with
high
theoretical
capacity
is
viewed
as
a
promising
anode
for
sodium‐ion
batteries
but
suffers
from
inferior
rate
capability
owing
to
the
polaron‐induced
slow
charge
transfer.
Herein,
polaron
collapse
strategy
induced
by
electron‐rich
insertions
proposed
effectively
solve
above
issue.
Specifically,
1D
[MoS]
chains
are
inserted
into
MoS
break
symmetry
states
of
2D
layers
and
induce
small‐polaron
gain
fast
transfer
so
that
as‐obtained
thermodynamically
stable
Mo
S
3
shows
metallic
behavior
10
7
times
larger
electrical
conductivity
than
.
Theoretical
calculations
demonstrate
owns
highly
delocalized
anions,
which
substantially
reduce
interactions
Na−S
efficiently
accelerate
Na
+
diffusion,
endowing
lower
energy
barrier
(0.38
vs
0.65
eV
).
The
novel
exhibits
510
mAh
g
−1
at
0.5
C
superior
high‐rate
stability
217
40
over
15
000
cycles.
Further
in
situ
ex
characterizations
reveal
in‐depth
reversible
redox
chemistry
intrinsically
facilitating
can
be
conducive
electrode
design
fast‐charging
batteries.
Advanced Functional Materials,
Journal Year:
2023,
Volume and Issue:
34(8)
Published: Nov. 10, 2023
Abstract
Development
of
low‐cost
electrocatalysts
for
water
splitting
is
crucial
to
economical
hydrogen
production.
Here,
a
highly
efficient
electrocatalyst
composed
MoNi
4
‐embedded
amorphous
MoO
2
nanosheets
grown
on
less‐tortuosity
hierarchically
porous
carbonized
wood
(MoNi
/MoO
@CW)
reported.
The
generation
abundant
heterointerfaces
and
defects‐rich
significantly
promote
the
adsorption
activation
reactant
molecules
@CW.
obtained
@CW
catalyst
exhibits
ultralow
overpotentials
22
205
mV
evolution
reaction
oxygen
at
current
density
10
mA
cm
−2
,
respectively.
can
be
used
dual‐function
electrodes
assembling
two‐electrode
electrolyzer
illustrates
1.47
V
superior
durability
over
24
h
overall
electrolysis.
Moreover,
it
also
possesses
high
mass
activity
142
Ag
−1
200
mV,
surpassing
Pt/C
(132
).
outstanding
performance
attributed
decrease
in
energy
barrier
dissociation,
optimal
adsorption/desorption
H/O‐intermediates,
fast
transport
through
structure,
as
confirmed
by
experimental
results
functional
theory‐based
calculations.
has
excellent
potential
practical
splitting.
