Abstract
Aqueous
Zn/V
2
O
5
batteries
are
featured
for
high
safety,
low
cost,
and
environmental
compatibility.
However,
complex
electrode
components
in
real
impede
the
fundamental
understanding
of
phase
transition
processes
intercalation
chemistry.
Here,
model
based
on
V
film
electrodes
which
show
similar
electrochemical
behaviors
as
ones
built.
Advanced
surface
science
characterizations
allow
to
identify
trajectories
Zn
2+
,
H
O,
+
during
processes.
Protons
serve
vanguard
intercalated
species,
facilitating
subsequent
O.
The
increase
capacity
activation
process
is
mainly
due
from
more
active
·nH
structure
caused
by
partial
irreversible
deintercalation
rather
than
sites
induced
grain
refinement
materials.
Eventually,
accumulation
species
within
oxide
results
formation
inactive
(Zn
3
(OH)
7
·2H
O)
structure.
established
chemistry
helps
design
high‐performance
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(52)
Опубликована: Авг. 27, 2024
Abstract
The
integration
of
atom
clusters
and
single
atoms
into
a
unified
system
represents
desirable
approach
for
attaining
enhanced
catalytic
performance.
Nonetheless,
the
controllable
synthesis
single‐atom
nanocluster
integrated
(SA‐NC)
faces
considerable
challenges,
mechanisms
underlying
activity
remain
poorly
understood.
In
this
research,
cobalt‐based
catalyst
containing
both
coordinatively
unsaturated
(CoN
3
)
small
nanoclusters
(Co@SA‐NC)
is
synthesized.
Co@SA‐NC
not
only
facilitates
charge
mass
transfer
due
to
interconnected
long‐range
micromorphology,
thus
endowing
efficient
oxygen
electrocatalytic
reaction
(ORR/OER),
but
also
undergoes
surface
reconfiguration
upon
OH
adsorption
at
high
potentials
in
alkaline
ORR/OER
conditions.
More
appealingly,
OH‐involved
reconfigured
adaptive
structure
promotes
optimization
energy
barriers
owing
dynamic
regulation
from
bridged
between
Co
cluster
whole
process.
Specific
application
metrics,
zinc–air
battery
assembled
using
exhibit
targeted
power
density
enhancement
with
270
mW
cm
−2
an
medium.
This
work
offers
effective
insight
study
SA‐NC
pathways
catalysis.
Abstract
Aqueous
Zn/V
2
O
5
batteries
are
featured
for
high
safety,
low
cost,
and
environmental
compatibility.
However,
complex
electrode
components
in
real
impede
the
fundamental
understanding
of
phase
transition
processes
intercalation
chemistry.
Here,
model
based
on
V
film
electrodes
which
show
similar
electrochemical
behaviors
as
ones
built.
Advanced
surface
science
characterizations
allow
to
identify
trajectories
Zn
2+
,
H
O,
+
during
processes.
Protons
serve
vanguard
intercalated
species,
facilitating
subsequent
O.
The
increase
capacity
activation
process
is
mainly
due
from
more
active
·nH
structure
caused
by
partial
irreversible
deintercalation
rather
than
sites
induced
grain
refinement
materials.
Eventually,
accumulation
species
within
oxide
results
formation
inactive
(Zn
3
(OH)
7
·2H
O)
structure.
established
chemistry
helps
design
high‐performance
