ChemCatChem,
Journal Year:
2024,
Volume and Issue:
16(22)
Published: Aug. 12, 2024
Abstract
Alkaline
water
splitting
has
shown
great
potential
for
industrial‐scale
hydrogen
production.
However,
its
broad
application
is
constrained
by
evolution
reaction
(HER)
electrocatalysts,
which
struggle
to
achieve
optimal
current
density
at
low
overpotential.
The
utilization
of
the
spillover
effect
augment
performance
HER
represents
a
burgeoning
area
research.
Although
previous
studies
mainly
focused
on
in
acidic
media,
latest
have
that
also
exists
under
alkaline
conditions,
and
role
improving
cannot
be
ignored.
This
review
examines
mechanisms
elucidating
distinctive
behavior
these
environments
influence
catalytic
processes.
At
same
time
characterization
methods
are
systematically
summarized,
technologies
understanding
control
release
process
provides
strong
support.
Finally,
recent
electrocatalysts
enhance
comprehensively
sorted
out
summarized.
not
only
demonstrate
practical
value
but
provide
new
directions
future
design
optimization
electrocatalysts.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 19, 2024
Hydrogen
oxidation
reaction
(HOR)
can
effectively
convert
the
hydrogen
energy
through
fuel
cells,
which
plays
an
increasingly
important
role
in
renewable
cycle.
Nevertheless,
when
electrolyte
pH
changes
from
acid
to
base,
even
with
platinum
group
metal
(PGM)
catalysts,
HOR
kinetics
declines
several
orders
of
magnitude.
More
critically,
pivotal
intermediates
and
interfacial
environment
during
intermediate
behaviors
on
alkaline
remains
controversial.
Therefore,
exploring
exceptional
PGM-based
electrocatalysts
identifying
mechanism
are
indispensable
for
promoting
commercial
development
cells.
Consequently,
fundamental
understanding
is
first
introduced,
emphases
adsorption/desorption
process
distinct
reactive
structure
catalytic
process.
Subsequently,
guidance
mechanism,
latest
advances
rational
design
advanced
(Pt,
Pd,
Ir,
Ru,
Rh-based)
catalysts
discussed,
focusing
correlation
between
electrocatalytic
performance.
Finally,
given
that
challenges
standing
HOR,
prospect
thorough
investigation
towards
emphatically
proposed.
Inorganic Chemistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 24, 2025
Constructing
an
efficient
open
hollow
nut-like
Co-MOF/Pt-based
electrocatalyst
via
a
partial
etching
strategy
remains
challenging.
In
this
study,
novel
concurrent
thermal
polymerization-etching
is
introduced
to
prepare
unique
Co-PtSA
decorated
with
CoPt@C
layer
(denoted
as
Co-PtSA/CoPt@C),
exhibiting
outstanding
hydrogen
evolution
reaction
performance.
Co-PtSA/CoPt@C,
the
distinctive
structure
encapsulated
within
layer.
The
consists
of
CoPt@CNTs
and
core-shell.
Electrochemical
tests
demonstrate
that
Co-PtSA/CoPt@C
exhibits
remarkable
catalytic
performance,
requiring
only
13
mV
overpotential
in
1
M
KOH
achieve
current
density
10
mA
cm-2.
Additionally,
turnover
frequency
reaches
0.169
s-1
at
η
=
50
mV,
0.466
100
1.33
200
surpassing
performance
commercial
20%
Pt/C.
addition,
adsorption
Gibbs
free
energy
for
on
notably
low,
value
-0.65
eV,
which
promotes
H2
formation.
Carbon Energy,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 19, 2025
ABSTRACT
Single‐atom
catalysts
(SACs)
have
garnered
interest
in
designing
their
ligand
environments,
facilitating
the
modification
of
single
catalytic
sites
toward
high
activity
and
selectivity.
Despite
various
synthetic
approaches,
it
remains
challenging
to
achieve
a
catalytically
favorable
coordination
structure
simultaneously
with
feasible
formation
SACs
at
low
temperatures.
Here,
new
type
for
Pt
is
introduced
offer
highly
efficient
hydrogen
evolution
reaction
(HER)
catalyst,
where
are
readily
fabricated
by
atomically
confining
PtCl
2
on
chemically
driven
NO
two‐dimensional
nitrogen‐doped
carbon
nanosheets
room
temperature.
The
resultant
form
–Pt–Cl
an
atomic
dispersion,
as
revealed
X‐ray
spectroscopy
transmission
electron
microscopy
investigations.
Moreover,
our
first‐principles
density
functional
theory
(DFT)
calculations
show
strong
interactions
computing
binding
energy
charge
difference
between
.
SACs,
established
‐functionalized
support,
demonstrate
onset
potential
25
mV,
Tafel
slope
40
mV
dec
−1
,
specific
1.35
A
mg
Importantly,
also
exhibit
long‐term
stability
up
110
h,
which
significant
advance
field
single‐atom
catalysts.
newly
developed
features
active
center,
providing
ability
comparable
that
Pt(111),
enhanced
durability
due
metal‐support
interactions,
advantage
room‐temperature
fabrication.
ACS Nano,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 30, 2025
Traditional
recovery
of
valuable
metals
from
spent
ternary
lithium-ion
batteries
concentrates
on
complicated
pyrometallurgy
and
hydrometallurgy
routes.
Direct
reutilization
these
used
to
catalyze
Li-O2
is
highly
appealing
yet
remains
a
significant
challenge.
Here,
we
report
general
synthesis
ultrafine
αNiCoMn
(α
=
Pt,
Ir,
Ru)
high-entropy
alloy
(HEA)
nanoparticles
anchored
nitrogen-doped
carbon
(N-C)
support
through
facile
one-step
Joule
heating,
which
serves
as
high-efficiency
catalyst
for
batteries.
Solution
alloying
recycled
NiCoMn
with
Pt
group
facilitates
catalytic
efficiency
3d-5d
electronic
interactions
the
assembly
effect.
Both
experimental
calculation
results
reveal
that,
driven
by
rapid,
nonequilibrium
thermal
shock,
electron
transfer
defies
conventional
expectations,
where
electrons
are
inclined
higher
electronegative
surrounding
atoms.
This
interesting
reverse
local
charge
redistribution
orbital
hybridization
endow
an
elevated
d-band
center
optimized
structure.
The
induced
coordination
effects
further
generate
active
catalysis
surfaces,
favoring
adsorption
LiO2
intermediates
facilitating
rapid
decomposition
kinetics
nanoscale
Li2O2
products.
These
advantages
HEA@N-C
superior
bifunctional
activity,
achieving
ultralow
polarization
0.27
V
significantly
enhanced
cycling
life
240
cycles.
We
anticipate
that
this
work
will
provide
insights
into
upcycling
constructing
efficient
HEA
electrocatalysts.
