ChemSusChem,
Journal Year:
2024,
Volume and Issue:
17(20)
Published: May 3, 2024
Abstract
Recently,
many
studies
have
been
published
regarding
electrochemical
oxygen
reduction
reaction
for
generating
hydrogen
peroxide
(H
2
O
)
using
gas
diffusion
electrodes
(GDEs)
various
applications.
Sodium
salts
solved
in
deionized
water
were
usually
used
as
supporting
electrolytes.
In
technical
applications,
however,
tap
water‐based
electrolytes
with
hardeners
are
particularly
relevant
and
only
considered
a
few
to
date.
this
work,
we
investigated
the
influence
of
on
H
‐generation
at
150
mA
cm
−2
able
show
that
scaling
occurs
predominantly
GDE‐surface
not
its
pore
structure.
With
novel
method
synthesis
by
complexing
agents
bind
hardeners,
significantly
reduce
scaling.
Even
after
10
h
operation,
reactor
still
achieves
faradaic
efficiency
(FE)
above
70
%
(>67
mg
−1
),
comparable
experiments
without
electrolyte.
Furthermore,
demonstrate
electrochemically
converted
carbon‐based
GDE
behave
inertly.
If
cell
is
operated
rinsed
acidic
liquid
(anolyte)
between
batches,
can
be
completely
avoided.
Industrial & Engineering Chemistry Research,
Journal Year:
2024,
Volume and Issue:
63(42), P. 18053 - 18066
Published: Oct. 11, 2024
This
study
integrates
macromixing
and
micromixing
methodologies
to
characterize
an
electrochemical
reactor
with
a
gas
diffusion
electrode
(GDE)
based
on
computational
fluid
dynamics
(CFD)
simulations
validated
by
residence
time
distribution
(RTD)
data.
It
experimentally
evaluates
two
types
of
GDEs
for
H2O2
accumulation
uses
the
CFD
model
evaluate
in
reactor.
The
tanks-in-series
(T-I-S)
provides
qualitative
understanding
fluid's
macroscopic
behavior,
while
transition
SST
analyzes
microscopic
turbulence
zones.
reveals
significant
convergence
current
density,
volumetric
flow
rate,
GDE
type
production.
optimal
experimental
configuration
(carbon/PTFE/fabric
Q
=
50
L
h–1)
was
evaluated
through
at
different
rates.
These
results
improve
our
hydrodynamics
offer
prospects
optimizing
generation
processes.
Energy & Fuels,
Journal Year:
2023,
Volume and Issue:
37(23), P. 17915 - 17931
Published: Oct. 4, 2023
Hydrogen
production
from
electrochemical
water
splitting
has
attracted
great
attention
due
to
its
supply
green
energy.
However,
commercial
alkaline
electrolysis
is
energy
intensive
inert
and
large
overpotentials
of
anodic
oxygen
evolution
reaction
(OER).
Electro-oxidation
organics
an
attractive
alternative
the
OER.
With
electro-oxidation
special
organic
substrates
on
active
anode,
decreased
cell
voltage
H2
can
be
achieved
along
with
value-added
products.
In
this
review,
we
summarize
latest
progress
coupled
systems.
Different
compounds
containing
(alcoholic
hydroxyl,
aldehydes,
ketone),
nitrogen,
sulfides,
olefin/alkane
groups
have
been
selectively
oxidized
into
high
products
anodes,
thereby
promoting
cathodes.
Some
complicated
coupling
reactions,
such
as
formation
C–C
C–N,
are
also
introduced
in
addition,
challenges
prospects
for
future
development
research
field
highlighted.
