Industrial & Engineering Chemistry Research,
Journal Year:
2025,
Volume and Issue:
64(9), P. 5087 - 5098
Published: Feb. 21, 2025
Gas
bubble
adhesion,
a
ubiquitous
phenomenon
in
electrochemical
gas-evolving
reactions,
reduces
the
hydrogen
evolution
reaction
(HER)
activity
water
electrolysis.
Understanding
dynamics
of
gas
detachment
and
its
dependence
on
force
balance
is
crucial
for
manipulating
departure,
but
it
remains
insufficiently
investigated.
Here,
we
found
that
differ
markedly
between
fluidizable
stationary
electrocatalysts,
with
electrocatalysts
minimizing
adhesion
showing
37-fold
increase
HER
rate
constant.
This
enhancement
attributed
to
accelerated
driven
by
fluidization
effect
electrocatalyst
particles.
Specifically,
transition
from
marks
shift
flat
particulate
model,
introducing
promoting
effects
arising
particle
movement
spin-induced
centrifugal
collision-triggered
coalescence.
Consequently,
measured
approaches
intrinsic
value.
work
highlights
as
an
effective
strategy
eliminate
thereby
exposing
nearly
all
active
sites
electrocatalytic
reactions.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(41)
Published: Aug. 13, 2024
Abstract
Overall
water
splitting
is
a
promising
technology
for
sustainable
hydrogen
production,
but
the
primary
challenge
removing
bubbles
from
electrode
surface
quickly
to
increase
production.
Inspired
by
directional
fluid
transport
properties
of
natural
biological
surfaces
like
Nepenthes
peristome
and
Morpho
butterfly's
wings,
here
strategy
demonstrated
achieve
highly
efficient
overall
bubble‐guidance
electrode,
that
is,
an
anisotropic
groove‐micro/nanostructured
porous
(GMPE).
Gradient
groove
micro/nanostructures
on
GMPE
serve
as
high‐speed
bubble
transmission
channels
exhibit
superior
capabilities.
The
synergistic
effect
asymmetric
Laplace
pressure
generated
between
microscale
structure
patterns
buoyancy
along
pushes
produced
directionally
spread,
transport,
detach
in
time.
Moreover,
low
adhesive
nanosheet
arrays
are
beneficial
reduce
size
release
frequency,
which
cooperatively
improve
mass
transfer
with
structure.
Notably,
outperforms
planar‐micro/nanostructured
(PMPE)
hydrogen/oxygen
evolution
reactions,
GMPE||GMPE
showing
better
performance
than
commercially
available
RuO
2
||20
wt.%
Pt/C.
This
work
improves
electrodes
kinetics
electrochemical
reactions
at
solid‐liquid‐gas
interfaces,
offering
insight
designing
preparing
gas‐involved
photoelectrochemical
electrodes.
Nanoscale,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
Rice
leaves
inspired
the
development
of
an
anisotropic
microstructured
gas
conduction
electrode
featuring
rapid
desorption
and
transfer
bubbles
to
achieve
highly
efficient
hydrogen
production.
Industrial & Engineering Chemistry Research,
Journal Year:
2025,
Volume and Issue:
64(9), P. 5087 - 5098
Published: Feb. 21, 2025
Gas
bubble
adhesion,
a
ubiquitous
phenomenon
in
electrochemical
gas-evolving
reactions,
reduces
the
hydrogen
evolution
reaction
(HER)
activity
water
electrolysis.
Understanding
dynamics
of
gas
detachment
and
its
dependence
on
force
balance
is
crucial
for
manipulating
departure,
but
it
remains
insufficiently
investigated.
Here,
we
found
that
differ
markedly
between
fluidizable
stationary
electrocatalysts,
with
electrocatalysts
minimizing
adhesion
showing
37-fold
increase
HER
rate
constant.
This
enhancement
attributed
to
accelerated
driven
by
fluidization
effect
electrocatalyst
particles.
Specifically,
transition
from
marks
shift
flat
particulate
model,
introducing
promoting
effects
arising
particle
movement
spin-induced
centrifugal
collision-triggered
coalescence.
Consequently,
measured
approaches
intrinsic
value.
work
highlights
as
an
effective
strategy
eliminate
thereby
exposing
nearly
all
active
sites
electrocatalytic
reactions.
