Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 12, 2024
Abstract
Metal
selenides
with
excellent
electronic
conductivity
and
high
theoretical
capacity
present
great
superiority
as
alternative
anodes
in
sodium
ion
batteries
(SIBs).
However,
they
face
huge
challenges
such
severe
polyselenides
shuttling
slow
diffusion
kinetics.
To
address
these
issues,
entropy
regulation
strategy
is
employed
to
optimize
the
presence
of
Se
vacancies
successfully
prepared
NiCoFeMnCr/CNTs
(HE‐MSe/CNTs)
rich
vacancies.
This
material
enhances
adsorption
energy
for
shuttle
compounds
like
Na
2
4
,
effectively
limiting
dissolution
improving
kinetics
ions
well
structural
thermodynamics
x
HE‐MSe/CNTs
phase.
Experimental
results
indicate
that
achieve
a
highly
reversible
storage
process
involving
intercalation
conversion
reaction
mechanisms.
enables
superior
rate
capability
400.4
mAh
g
−1
at
current
density
5
A
long‐term
durability
90%
retention
after
1000
cycles
1
.
Therefore,
utilizing
customize
vacancy
formation
provides
new
insights
methods
enhancing
performance
SIB
anodes.
Advanced Sustainable Systems,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 23, 2025
Abstract
Methanol
electrolysis,
coupling
thermodynamically
favorable
methanol
oxidation
reaction
(MOR)
and
hydrogen
evolution
(HER),
is
a
promising
strategy
for
energy‐saving
generation
as
compared
with
traditional
water
splitting.
Pt‐based
catalysts
are
the
best
choice
while
intrinsic
activity
utilization
of
Pt
should
be
increased
due
to
its
high
cost.
Supporting
engineering
effective
in
boosting
catalytic
effectiveness,
some
novel
supports
diverse
support
effects
developed
accelerate
kinetics
improve
efficiency.
Herein,
comprehensive
review
recent
advances
electrocatalysts
methanol‐assisted
production
provided.
The
mechanism
electrolysis
anode
MOR
cathode
HER
first
outlined,
respectively.
Then,
performance
enhancement
effects,
including
anchoring,
electronic,
synergistic,
strain
briefly
discussed.
Subsequently,
clarified
by
supports,
metal
oxides,
phosphides,
selenides,
tellurides,
presented,
promotion
effect
relevant
challenges
future
perspectives
concluded
last
section,
where
most
attention
paid
metal‐supporting
their
understanding
study.
Advanced Energy and Sustainability Research,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 2, 2025
The
aim
of
this
study
is
to
investigate
the
activity
and
stability
carbon
aerogel‐supported
platinum
electrocatalysts
in
hydrogen
evolution
reaction,
compared
current
solutions
based
on
black.
Self‐synthesized
aerogels
(pyrolyzed
cellulose,
chitosan‐based
aerogels)
with
multiscale
porosity
high
overall
specific
surface
area
(up
≈2500
m
2
g
−1
),
as
well
Vulcan
XC‐72R
supports
were
loaded
via
supercritical
deposition
(SCD)
nanoparticles
(mean
particle
diameter
≈1.3–2.0
nm,
2.8–3.8
wt%
Pt
loading).
Overpotentials
ranged
from
46.5
50.0
mV
at
10
mA
cm
−2
,
whereas
self‐synthesized
had
similar
overpotentials
a
commercial
catalyst
≈8–10
times
higher
loading.
In
addition,
Pt‐carbon
aerogel
durability
Pt‐Vulcan,
most
probably
due
micro‐
mesoporosity
aerogels,
which
promotes
nanoparticle
stability.
density
40
for
Pt‐Vulcan
decreased
by
80%
after
20
h,
an
insignificant
drop
was
observed
aerogels.
These
results
show
that
applied
combination
materials
(biopolymer‐based
loading
method
are
promising
approach
synthesizing
stable
reduced
content
green
production.
Catalysts,
Год журнала:
2025,
Номер
15(3), С. 278 - 278
Опубликована: Март 16, 2025
Developing
cost-effective
and
high-performance
non-precious
metal-based
electrocatalysts
for
hydrogen
evolution
reaction
is
of
crucial
importance
toward
sustainable
energy
systems.
Herein,
we
prepare
a
novel
hybrid
electrode
featuring
intermetallic
Fe2Mo
nanoparticles
anchored
on
the
hierarchical
nanoporous
copper
skeleton
as
robust
electrocatalyst
by
simple
scalable
alloying
dealloying
methods.
By
virtue
highly
active
unique
bicontinuous
facilitating
ion/molecule
transportation,
Fe2Mo/Cu
shows
excellent
electrocatalysis,
with
low
Tafel
slope
(~71
mV
dec−1)
to
realize
ampere-level
current
density
1
A
cm−2
at
overpotential
~200
in
M
KOH
electrolyte.
Furthermore,
exhibits
long−term
stability
exceeding
400
h
maintain
~250
mA
an
150
mV.
Such
outstanding
electrocatalytic
performance
enables
be
attractive
catalyst
water
splitting
economy.
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 3, 2025
Electrochemical
conversion
has
been
regarded
as
an
ideal
technology
for
achieving
clean
and
sustainable
energy,
showing
significant
promise
in
addressing
the
increasingly
serious
energy
crisis
environmental
pollution.
Ru-containing
electrocatalysts
(RUCE)
outperform
other
precious
metals
due
to
elevated
intrinsic
activity
superior
cost-effectiveness,
developing
into
a
promising
candidate
electrochemical
reactions.
A
challenge
field
of
catalyst
discovery
lies
its
heavy
reliance
on
empirical
methods,
rather
than
approaches
that
are
rooted
rational
design
principles.
This
review
first
concentrates
catalytically
active
sites
critical
factors
governing
catalytic
performance
durability.
Then,
comprehensive
summary
multifunctional
modification
strategies
ranging
from
nanoscale
atomic
scale
is
explored
control
structure
improve
performance.
By
unveiling
roles
each
component
modified
RUCE
at
level,
their
identified
discussed
establish
structure-performance
relationship
catalysts.
Finally,
challenges
perspectives
Ru-based
materials
hydrogen,
oxygen,
nitrogen
reactions
presented
inspire
further
efforts
toward
understanding
meet
ever-growing
demand
future.
The
design
of
highly
active
and
durable
acidic
hydrogen
evolution
reaction
(HER)
electrocatalysts
remains
a
critical
challenge
for
advancing
production
technologies.
Monolayer
graphullerene,
two-dimensional
(2D)
carbon
network
derived
from
C60
fullerenes,
exhibits
exceptional
properties
such
as
structural
stability,
high
specific
surface
area,
superior
in-plane
electron
conductivity,
distinctive
electron-accepting
behavior,
positioning
it
an
ideal
catalyst
support.
In
this
work,
we
report
the
synthesis
ultrafine
iridium
nanoparticles
(∼1.7
nm)
anchored
on
monolayer
graphullerene
(Ir
NP@MLG)
demonstrate
its
excellent
HER
performance
in
media.
Comprehensive
morphological
analyses
confirm
atomic-scale
dispersion
Ir
framework.
NP@MLG
hybrid
achieves
activity
with
ultralow
overpotential
η10
=
18
mV
(vs
RHE)
Tafel
slope
16.54
dec-1,
surpassing
most
reported
Ir-based
catalysts.
Notably,
mass
3.48
A
mg-1
at
-50
RHE),
representing
one
highest
values
among
state-of-the-art
Stability
tests
reveal
durability,
negligible
loss
after
260
h
continuous
operation.
originates
(1)
graphullerene's
2D
conductive
facilitating
rapid
charge
transfer
(2)
strong
metal-support
interactions
optimizing
electronic
structure
nanoparticle
stabilization.
This
study
establishes
interesting
support
developing
electrocatalysts,
providing
deep
insights
into
efficient
energy
systems.
