Small Methods,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 16, 2025
Abstract
Electrocatalytic
water
splitting
for
hydrogen
generation
plays
a
crucial
role
in
promoting
the
energy
transition
and
achieving
goals
of
carbon
neutrality.
Nevertheless,
context
electrolysis,
generated
bubbles
have
an
adverse
impact
on
consumption
mass
transfer
efficiency.
To
address
this
challenge,
variety
strategies
are
investigated
to
accelerate
bubble
detachment
transport.
It
is
utmost
significance
summarize
those
facilitating
advancement
electrolysis
performance.
In
review,
comprehensive
account
presented
enhancing
performance
through
behavior
management.
First,
electrolyte
discussed.
Then,
optimized
interactions
between
electrode
surface
introduced,
which
focus
reducing
adhesion
forces
implementing
other
forces.
Next,
dynamic
bubbling
deformable
catalysts
discussed,
such
as
fern‐
caterpillar‐like
catalysts.
Following
that,
bubble‐bubble
coalescence
proved
be
beneficial
earlier
departure
compared
buoyancy
effect
alone.
Finally,
outlooks
future
development
efficient
removal
enhanced
The
review
aims
deepen
comprehension
stimulate
management
strategies,
thereby
further
electrolysis.
ACS Energy Letters,
Journal Year:
2023,
Volume and Issue:
8(8), P. 3330 - 3342
Published: July 25, 2023
Anion-exchange
membrane
water
electrolysis
(AEM-WE)
promises
low
cost,
green
hydrogen
production
for
the
future.
In
order
to
meet
this
potential,
significant
improvements
performance
and
stability
of
catalyst
layers
(CLs)
must
be
made,
including
development
tailor-made
ion
conducting
polymer
materials.
This
Focus
Review
outlines
role
anion-exchange
ionomers
(AEIs)
in
CLs
enabling
activation,
enhancing
toward
delamination,
improving
conduction.
Detrimental
effects
such
as
inhibition
evolution
reaction
(HER)
oxygen
(OER)
oxidative
instability
ionomer
are
also
discussed
with
key
findings
from
recent
AEM-WE
literature.
Opportunities
future
guide
efforts.
Advanced Science,
Journal Year:
2023,
Volume and Issue:
10(32)
Published: Sept. 29, 2023
Abstract
Water
splitting,
an
efficient
technology
to
produce
purified
hydrogen,
normally
requires
high
cell
voltage
(>1.5
V),
which
restricts
the
application
of
single
atoms
electrocatalyst
in
water
oxidation
due
inferior
stability,
especially
acidic
environment.
Substitution
anodic
oxygen
evolution
reaction
(OER)
with
hydrazine
(HzOR)
effectually
reduces
overall
voltage.
In
this
work,
utilization
iridium
atom
(Ir‐SA/NC)
as
robust
hydrogen
(HER)
and
HzOR
0.5
m
H
2
SO
4
electrolyte
is
reported.
Mass
activity
Ir‐SA/NC
37.02
A
mg
Ir
−1
at
overpotential
50
mV
HER
catalysis,
boosted
by
127‐time
than
Pt/C.
Besides,
only
0.39
V
versus
RHE
attain
10
mA
cm
−2
dramatically
lower
OER
(1.5
RHE);
importantly,
a
superior
stability
achieved
HzOR.
Moreover,
mass
enhanced
83‐fold
The
situ
Raman
spectroscopy
investigation
suggests
pathway
follows
*N
→*2NH
→*2NH→2N→*N
→N
for
Ir‐SA/NC.
assisted
splitting
demands
drive,
1.25
splitting.
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
146(14), P. 10177 - 10186
Published: March 27, 2024
The
evolution
of
electrogenerated
gas
bubbles
during
water
electrolysis
can
significantly
hamper
the
overall
process
efficiency.
Promoting
departure
electrochemically
generated
(water)
is
therefore
beneficial.
For
a
single
bubble,
from
electrode
surface
occurs
when
buoyancy
wins
over
downward-acting
forces
(e.g.,
contact,
Marangoni,
and
electric
forces).
In
this
work,
dynamics
pair
H2
produced
hydrogen
reaction
in
0.5
M
H2SO4
using
dual
platinum
microelectrode
system
systematically
studied
by
varying
distance
cathodic
potential.
By
combining
high-speed
imaging
electrochemical
analysis,
we
demonstrate
importance
bubble–bubble
interactions
process.
We
show
that
bubble
coalescence
may
lead
to
substantially
earlier
as
compared
effects
alone,
resulting
considerably
higher
rates
at
constant
However,
due
continued
mass
input
conservation
momentum,
repeated
events
with
close
drive
departed
back
beyond
critical
current,
which
increases
spacing.
latter
leads
resumption
growth
near
surface,
followed
buoyancy-driven
departure.
While
less
favorable
small
spacing,
configuration
proves
be
very
beneficial
larger
separations,
increasing
mean
current
up
2.4
times
under
conditions
explored
study.
International Journal of Hydrogen Energy,
Journal Year:
2024,
Volume and Issue:
65, P. 381 - 397
Published: April 7, 2024
This
review,
addressing
developers,
users,
and
researchers
of
PEM
water
electrolysis
stacks,
provides
a
detailed
overview
the
most
important
degradation
mechanisms,
underlying
influencing
factors,
resulting
impact
on
system
component
degradation.
By
investigating
significance
consequences
mechanisms
stack
performance
life-time,
it
comprehensive
understanding
challenges
impacts
associated
with
technology.
Possible
qualitative
quantitative
statements
based
observed
phenomena
single
cell
level
as
well
from
ex-situ
examinations
are
evaluated.
The
common
diagnostic
tools,
electrochemical,
imaging,
physical
analysis
methods,
elemental
structural
described
in
an
application-oriented
manner
regarding
their
advantages,
possibilities,
limits.
Chemical Reviews,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 11, 2024
Gas
bubbles
generated
by
the
hydrogen
evolution
reaction
and
oxygen
during
water
electrolysis
influence
energy
conversion
efficiency
of
production.
Here,
we
survey
what
is
known
about
interaction
gas
electrode
surfaces
on
practicable
devices
used
for
electrolysis.
We
outline
physical
processes
occurring
life
cycle
a
bubble,
summarize
techniques
to
characterize
phenomena
in
situ
practical
device
environments,
discuss
ways
that
electrodes
can
be
tailored
facilitate
removal
at
high
current
densities.
Lastly,
review
efforts
model
behavior
individual
multiphase
flows
produced
gas-evolving
electrodes.
conclude
our
with
short
summary
outstanding
questions
could
answered
future
electrochemical
environments
or
improved
simulations
flows.
Inorganic Chemistry Frontiers,
Journal Year:
2024,
Volume and Issue:
11(14), P. 4080 - 4106
Published: Jan. 1, 2024
This
summary
describes
the
effects
of
wettability,
local
pH,
interfacial
water
structure,
and
electrolyte
composition
on
interface
reactant
compositions,
key
intermediate
adsorption,
reaction
kinetics.
