Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 14, 2025
Abstract
Two‐electron
oxygen
reduction
reaction
(2e
−
ORR)
in
acidic
media
is
a
promising
route
for
the
decentralized
and
on‐site
hydrogen
peroxide
(H
2
O
)
generation.
Nevertheless,
strong
interaction
between
active
sites
*
OOH
intermediates
usually
induces
O─O
bond
cleavage
to
convert
2e
pathway
into
sluggish
4e
ORR.
Therefore,
it
highly
necessary
optimize
electronic
structure
of
ORR
electrocatalysts
regulation
adsorption
energy.
Herein,
we
propose
utilization
atomically
dispersed
Co/Mo
anchored
on
mesoporous
carbon
hollow
spheres
(Co/Mo‐MCHS)
via
template‐engaged
strategy
selective
H
acid.
Benefitting
from
electron‐donating
effect
Mo
atoms,
an
enriched
electron
density
around
Co
center
Co/Mo‐MCHS
observed,
resulting
optimal
key
approach
apex
volcano
plot.
Moreover,
introduction
species
simultaneously
suppresses
electroreduction
as‐obtained
sites.
As
consequence,
delivers
high
selectivity
90–95%
The
flow
cell
based
catalyst
achieves
remarkable
yield
2102
mg
150
h.
this
can
be
extended
other
early
transition
metal
elements
with
similar
modifier
effects.
Angewandte Chemie,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 11, 2025
Abstract
To
advance
electrochemical
H
2
O
production
and
unravel
catalytic
mechanisms,
the
precise
structural
coordination
of
single‐atomic
M‐N‐C
electrocatalysts
is
urgently
required.
Herein,
Co─N
5
site
with
an
asymmetric
electronic
configuration
constructed
to
boost
two‐electron
oxygen
reduction
reaction
(2e
−
ORR)
compared
symmetric
4
,
effectively
overcoming
trade‐off
between
activity
selectivity
in
production.
Both
experimental
theoretical
analyses
demonstrate
that
breaking
symmetry
sites
promotes
activation
molecules
moderates
adsorption
key
*OOH
intermediate
by
disrupting
linear
scaling
relationship
for
intermediates
adsorption.
This
modulation
enables
efficient
H₂O₂
its
effective
retention
subsequent
applications.
As
a
proof
concept,
achieves
rate
as
high
16.1
mol
g
cat
−1
h
flow
cell,
outperforming
most
recently
reported
counterparts.
Furthermore,
coupling
2e
ORR
oxidation
cellulose‐derived
carbohydrates
accomplishes
formic
acid
yields
(84.1%
from
glucose
62.0%–92.1%
other
substrates),
underpinning
sustainable
electro‐refinery
biomass
valorization
at
ambient
conditions.
By
elucidating
intrinsic
2e⁻
asymmetry
sites,
this
work
paves
way
high‐performance
electrosynthesis.
Nanoscale,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
We
present
the
molecular
coordination
inheritance
strategy
for
synthesizing
2e-ORR
SACs
with
well-defined
environments
and
reveal
formation
mechanism
of
active
sites.
The
Co–N
2
O
catalyst
shows
highest
selectivity.
Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 14, 2025
Abstract
Two‐electron
oxygen
reduction
reaction
(2e
−
ORR)
in
acidic
media
is
a
promising
route
for
the
decentralized
and
on‐site
hydrogen
peroxide
(H
2
O
)
generation.
Nevertheless,
strong
interaction
between
active
sites
*
OOH
intermediates
usually
induces
O─O
bond
cleavage
to
convert
2e
pathway
into
sluggish
4e
ORR.
Therefore,
it
highly
necessary
optimize
electronic
structure
of
ORR
electrocatalysts
regulation
adsorption
energy.
Herein,
we
propose
utilization
atomically
dispersed
Co/Mo
anchored
on
mesoporous
carbon
hollow
spheres
(Co/Mo‐MCHS)
via
template‐engaged
strategy
selective
H
acid.
Benefitting
from
electron‐donating
effect
Mo
atoms,
an
enriched
electron
density
around
Co
center
Co/Mo‐MCHS
observed,
resulting
optimal
key
approach
apex
volcano
plot.
Moreover,
introduction
species
simultaneously
suppresses
electroreduction
as‐obtained
sites.
As
consequence,
delivers
high
selectivity
90–95%
The
flow
cell
based
catalyst
achieves
remarkable
yield
2102
mg
150
h.
this
can
be
extended
other
early
transition
metal
elements
with
similar
modifier
effects.
