Flexible Electrocatalyst Engineering Based on 2D Ultrathin Nanosheets and Lamellar Fern‐Like Aerogel for Water Electrolysis
Advanced Sustainable Systems,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 12, 2025
Abstract
Water
electrolysis
represents
the
primary
method
to
produce
green
hydrogen.
Nevertheless,
during
water
electrolysis,
particularly
at
high
current
densities,
a
large
number
of
gas
bubbles
generated
are
difficult
detach
from
electrode,
triggering
series
negative
effects
such
as
active
site
covering,
ionic
conductance
block,
and
catalyst
deactivation,
which
in
turn
reduces
efficiency.
In
recent
years,
flexible
electrocatalysts
have
been
developed
address
this
issue
well,
with
superior
characteristics
including
mechanical
deformability,
optimization,
mass
transfer
efficiency,
structural
stability.
The
advanced
development
electrocatalyst
engineering
for
is
urgently
needed
be
systematically
reviewed.
Here,
first,
summarized
deeply
understand
their
impact
on
performance.
Second,
strategies
design
based
2D
nanosheets
fern‐like
structure
comprehensively
introduced.
Last
but
not
least,
outlooks
research
presented,
will
provide
preliminary
theoretical
basis
new
ideas
low‐cost,
high‐performance,
long‐life
applied
electrolysis.
Язык: Английский
Molecular Dynamics Insights into the Stability of Bulk Hydrogen Nanobubbles in Water and Methanol
Langmuir,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 28, 2025
Bulk
hydrogen
nanobubbles
(NBs)
play
a
key
role
in
generation
and
utilization.
However,
their
stabilization
mechanisms
different
solvents
remain
not
fully
understood.
This
study
employs
molecular
dynamics
simulations
to
investigate
the
stability
evolution
of
bulk
NBs
water
methanol,
with
experimental
measurements
providing
validation.
The
results
show
that
methanol
tend
dissolve
at
lower
initial
gas
densities,
indicating
compared
those
water.
Under
stable
conditions,
approximately
80%
molecules
inside
water,
while
only
about
40%
consistent
methanol's
higher
solubility
observed
experimentally.
Further
analysis
reveals
exhibit
thinner
gas-liquid
interface
as
well
internal
pressure
density,
mainly
related
its
solubility.
Utilizing
mechanical
equilibrium
critical
radius
theory,
we
identify
concentration
thresholds
for
NB
be
0.96-1.44
mol/L
2.69-2.88
methanol.
Additionally,
more
vigorous
motion,
stronger
interactions,
weaker
bond
network.
provides
molecular-level
insights
into
solvents.
Язык: Английский