Advanced Functional Materials,
Год журнала:
2021,
Номер
32(7)
Опубликована: Ноя. 5, 2021
Abstract
Interfacial
engineering
of
heterostructured
catalysts
has
attracted
great
interest
in
enabling
both
hydrogen
and
oxygen
evolution
reactions
(HER
OER),
by
fine
tuning
the
interfacial
geometry
electronic
structures.
However,
they
are
not
well
structured
for
high‐performing
bifunctionalities,
largely
due
to
confined
single
particle
morphologies,
where
exposed
surfaces
interfaces
limited.
Herein,
a
hollow
nanoframing
strategy
is
purposely
devised
interconnected
Co
3
O
4
–Mo
2
N
heterostructures
that
designed
with
charge
transfer
from
Mo
,
as
rationalized
theoretical
calculations
confirmed
X‐ray
photoelectron
spectroscopy
analyses.
It
shown
controllable
pyrolysis
bimetallic
Mo–Co
Prussian
blue
analogue
nanoframes
(NFs)
an
optimal
Mo/Co
ratio,
desired
heterostructure
successfully
formed.
The
as‐synthesized
NFs
only
inherit
functionalities
individual
components
electrolyte‐accessible
nanoframe
structure,
also
give
ideal
heterointerface
strong
electron
interaction
favorable
H
O/H*
adsorption
energies,
leading
remarkable
enhancement
bifunctional
catalytic
activities
(i.e.,
12.9‐fold
20‐fold
higher
current
density
under
300
mV
overpotential,
compared
single‐phased
alone
toward
HER
OER,
respectively),
while
remaining
robust
stability.
Nanoscale,
Год журнала:
2021,
Номер
13(30), С. 12788 - 12817
Опубликована: Янв. 1, 2021
Current
popular
transition
metal-based
electrocatalysts
developed
for
HER/OER
in
water
splitting
at
high
current
density
are
critically
reviewed
and
discussed.
Journal of Materials Chemistry A,
Год журнала:
2021,
Номер
9(28), С. 15586 - 15594
Опубликована: Янв. 1, 2021
Hollow
nanostructuring
can
facilitate
the
deep
reconstruction
of
NiFeP
into
low-crystalline
and
defective
heterostructured
NiOOH/FeOOH
with
superior
OER
performance.
In
situ
Raman
spectroscopy
shows
evidence
process.
Advanced Materials,
Год журнала:
2021,
Номер
33(9)
Опубликована: Янв. 29, 2021
Abstract
Layered
2D
materials
are
a
vital
class
of
electrocatalys
for
the
hydrogen
evolution
reaction
(HER),
due
to
their
large
area,
excellent
activity,
and
facile
fabrication.
Theoretical
caculations
domenstrate,
however,
that
only
edges
nanosheets
act
as
active
sites,
while
much
larger
basal
plane
exhibits
passive
activity.
Here,
from
distinguishing
perspective,
RhSe
2
is
reported
“3D”
electrocatalyst
HER
with
top‐class
synthesized
by
solid‐state
method.
Superior
materials,
multiple
crystal
facets
exhibit
near‐zero
free
energy
change
adsorption
(Δ
G
H
),
which
guarantees
high
performance
in
most
common
morphologies.
Density
functional
theory
calculations
reveal
low‐coordinated
Rh
atoms
sites
acid,
enables
modified
Kubas‐mediated
pathway,
Se
an
alkaline
medium.
The
overpotentials
activity
measured
be
49.9
81.6
mV
at
10
mA
cm
–2
acid
solutions,
respectively.
This
work
paves
way
new
transition
metal
chalcogenide
catalysts.
Advanced Functional Materials,
Год журнала:
2021,
Номер
32(7)
Опубликована: Ноя. 5, 2021
Abstract
Interfacial
engineering
of
heterostructured
catalysts
has
attracted
great
interest
in
enabling
both
hydrogen
and
oxygen
evolution
reactions
(HER
OER),
by
fine
tuning
the
interfacial
geometry
electronic
structures.
However,
they
are
not
well
structured
for
high‐performing
bifunctionalities,
largely
due
to
confined
single
particle
morphologies,
where
exposed
surfaces
interfaces
limited.
Herein,
a
hollow
nanoframing
strategy
is
purposely
devised
interconnected
Co
3
O
4
–Mo
2
N
heterostructures
that
designed
with
charge
transfer
from
Mo
,
as
rationalized
theoretical
calculations
confirmed
X‐ray
photoelectron
spectroscopy
analyses.
It
shown
controllable
pyrolysis
bimetallic
Mo–Co
Prussian
blue
analogue
nanoframes
(NFs)
an
optimal
Mo/Co
ratio,
desired
heterostructure
successfully
formed.
The
as‐synthesized
NFs
only
inherit
functionalities
individual
components
electrolyte‐accessible
nanoframe
structure,
also
give
ideal
heterointerface
strong
electron
interaction
favorable
H
O/H*
adsorption
energies,
leading
remarkable
enhancement
bifunctional
catalytic
activities
(i.e.,
12.9‐fold
20‐fold
higher
current
density
under
300
mV
overpotential,
compared
single‐phased
alone
toward
HER
OER,
respectively),
while
remaining
robust
stability.
