Chemical Reviews,
Journal Year:
2024,
Volume and Issue:
124(17), P. 10052 - 10111
Published: Aug. 28, 2024
Bubbles
play
a
ubiquitous
role
in
electrochemical
gas
evolution
reactions.
However,
mechanistic
understanding
of
how
bubbles
affect
the
energy
efficiency
processes
remains
limited
to
date,
impeding
effective
approaches
further
boost
performance
systems.
From
perspective
analogy
between
heat
and
mass
transfer,
reactions
exhibit
highly
similar
dynamic
behaviors
them
liquid–vapor
phase
change.
Recent
developments
change
systems
have
substantially
advanced
fundamental
knowledge
bubbles,
leading
unprecedented
enhancement
transfer
performance.
In
this
Review,
we
aim
elucidate
promising
opportunity
bubble
dynamics
through
lens
transfer.
We
first
provide
background
about
key
parallels
Then,
discuss
across
multiple
length
scales,
with
an
emphasis
on
exciting
research
problems
inspired
by
new
insights
gained
from
Lastly,
review
advances
engineered
surfaces
for
manipulating
enhance
providing
outlook
design
high-performance
evolving
electrodes.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(21), P. 27898 - 27907
Published: May 15, 2024
Bubble
dynamics
significantly
impact
mass
transfer
and
energy
conversion
in
electrochemical
gas
evolution
reactions.
Micro-/nanostructured
surfaces
with
extreme
wettability
have
been
employed
as
gas-evolving
electrodes
to
promote
bubble
departure
decrease
the
bubble-induced
overpotential.
However,
effects
of
electrodes'
wickability
on
reaction
performances
remain
elusive.
In
this
work,
hydrogen
(HER)
are
experimentally
investigated
using
micropillar
array
varying
interpillar
spacings,
wettability,
well
adhesion
discussed.
A
deep
learning-based
object
detection
model
was
used
obtain
counts
size
distributions.
We
show
that
microstructures
electrode
little
effect
total
distribution
characteristics
at
low
current
densities.
At
high
densities,
however,
much
higher
smaller
sizes
compared
flat
electrode.
also
demonstrate
surface
is
a
critical
factor
influencing
HER
under
where
bubbles
exist
an
isolated
regime.
Under
interacting
regime,
emerges
determining
factor.
This
work
elucidates
roles
enhancing
performances,
providing
guidelines
for
optimal
design
micro-/nanostructured
various
Energy & Fuels,
Journal Year:
2024,
Volume and Issue:
38(7), P. 6251 - 6259
Published: March 26, 2024
A
viable
method
of
sourcing
clean,
sustainable
fuels
that
can
address
energy
constraints
and
sustainability
issues
has
been
identified
as
the
engineering
affordable
structured
electrocatalysts
for
hydrogen
oxygen
evolution
processes.
The
current
research
work
is
a
CuPd
nanocube
coated
on
nickel
foam
an
electrocatalyst
utilized
bifunctional
applications.
overpotentials
131
330
mV
vs
RHE
was
attained
reaction
(HER)
(OER)
at
density
10
mA
cm–2.
It
crucial
to
observe
catalyst
could
reduce
overpotential
by
63.5%
with
bare
HER
31%
OER.
In
realm
catalysis,
where
originality
refinement
converge,
morphology
stands
evidence
boundless
possibilities
materials
design.
designed
exhibits
efficient
activity
notable
durability
up
50
h
in
given
potential
range
exceptionally
caustic
alkaline
environment.
finding
serves
enticing
amend
surface
structure
enhance
its
catalytic
capabilities.
Chemical Reviews,
Journal Year:
2024,
Volume and Issue:
124(17), P. 10052 - 10111
Published: Aug. 28, 2024
Bubbles
play
a
ubiquitous
role
in
electrochemical
gas
evolution
reactions.
However,
mechanistic
understanding
of
how
bubbles
affect
the
energy
efficiency
processes
remains
limited
to
date,
impeding
effective
approaches
further
boost
performance
systems.
From
perspective
analogy
between
heat
and
mass
transfer,
reactions
exhibit
highly
similar
dynamic
behaviors
them
liquid–vapor
phase
change.
Recent
developments
change
systems
have
substantially
advanced
fundamental
knowledge
bubbles,
leading
unprecedented
enhancement
transfer
performance.
In
this
Review,
we
aim
elucidate
promising
opportunity
bubble
dynamics
through
lens
transfer.
We
first
provide
background
about
key
parallels
Then,
discuss
across
multiple
length
scales,
with
an
emphasis
on
exciting
research
problems
inspired
by
new
insights
gained
from
Lastly,
review
advances
engineered
surfaces
for
manipulating
enhance
providing
outlook
design
high-performance
evolving
electrodes.
