Angewandte Chemie International Edition,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 10, 2025
The
electrochemical
oxygen
reduction
reaction
(ORR)
offers
an
alluring
and
sustainable
alternative
to
the
traditional
anthraquinone
process
for
hydrogen
peroxide
(H₂O₂)
synthesis.
However,
challenges
remain
in
developing
scalable
electrocatalysts
cost-effective
reactors
high-purity
H₂O₂
production.
This
study
introduces
a
simple
yet
effective
mechanical
mixing
method
fabricate
hybrid
electrocatalyst
from
oxidized
carbon
nanotubes
layered
double
hydroxides
(LDHs).
easily
accessible
low-cost
catalyst
achieves
near-perfect
Faradaic
efficiency
(∼100%)
with
low
overpotentials
of
73
mV
at
10
mA
cm⁻2
588
400
solid
electrolyte
cell.
Through
theoretical
calculations
in-situ
analyses,
we
uncover
pivotal
role
played
by
LDH
co-catalyst
fine-tuning
local
pH
catalyst/solid-electrolyte
interface
that
drives
both
activity
selectivity.
We
also
design
solid-state
reactor
using
cation-exchange
resin
(CER)
as
proton
conductor
microchannel
efficient
mass
transfer,
achieving
production
rate
5.29
mmol
h⁻¹
continuous
output
concentrations
11.8
wt.%
H₂O₂.
Scaled
industrial
area
2
×
100
cm2,
pilot
impressive
approximately
127.0
15
A,
marking
significant
advancement
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 28, 2025
Abstract
With
the
expanding
adoption
of
large‐scale
energy
storage
systems
and
electrical
devices,
batteries
supercapacitors
are
encountering
growing
demands
challenges
related
to
their
capability.
Amorphous/crystalline
heterostructured
nanomaterials
(AC‐HNMs)
have
emerged
as
promising
electrode
materials
address
these
needs.
AC‐HNMs
leverage
synergistic
interactions
between
amorphous
crystalline
phases,
along
with
abundant
interface
effects,
which
enhance
capacity
output
accelerate
mass
charge
transfer
dynamics
in
electrochemical
(EES)
devices.
Motivated
by
elements,
this
review
provides
a
comprehensive
overview
synthesis
strategies
advanced
EES
applications
explored
current
research
on
AC‐HNMs.
It
begins
summary
various
Diverse
devices
AC‐HNMs,
such
metal‐ion
batteries,
metal–air
lithium–sulfur
supercapacitors,
thoroughly
elucidated,
particular
focus
underlying
structure–activity
relationship
among
amorphous/crystalline
heterostructure,
performance,
mechanism.
Finally,
perspectives
for
proposed
offer
insights
that
may
guide
continued
development
optimization.
Angewandte Chemie International Edition,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 10, 2025
The
electrochemical
oxygen
reduction
reaction
(ORR)
offers
an
alluring
and
sustainable
alternative
to
the
traditional
anthraquinone
process
for
hydrogen
peroxide
(H₂O₂)
synthesis.
However,
challenges
remain
in
developing
scalable
electrocatalysts
cost-effective
reactors
high-purity
H₂O₂
production.
This
study
introduces
a
simple
yet
effective
mechanical
mixing
method
fabricate
hybrid
electrocatalyst
from
oxidized
carbon
nanotubes
layered
double
hydroxides
(LDHs).
easily
accessible
low-cost
catalyst
achieves
near-perfect
Faradaic
efficiency
(∼100%)
with
low
overpotentials
of
73
mV
at
10
mA
cm⁻2
588
400
solid
electrolyte
cell.
Through
theoretical
calculations
in-situ
analyses,
we
uncover
pivotal
role
played
by
LDH
co-catalyst
fine-tuning
local
pH
catalyst/solid-electrolyte
interface
that
drives
both
activity
selectivity.
We
also
design
solid-state
reactor
using
cation-exchange
resin
(CER)
as
proton
conductor
microchannel
efficient
mass
transfer,
achieving
production
rate
5.29
mmol
h⁻¹
continuous
output
concentrations
11.8
wt.%
H₂O₂.
Scaled
industrial
area
2
×
100
cm2,
pilot
impressive
approximately
127.0
15
A,
marking
significant
advancement
