Advanced Functional Materials,
Journal Year:
2021,
Volume and Issue:
32(7)
Published: Nov. 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.
Chemical Society Reviews,
Journal Year:
2022,
Volume and Issue:
51(11), P. 4583 - 4762
Published: Jan. 1, 2022
Replacing
fossil
fuels
with
energy
sources
and
carriers
that
are
sustainable,
environmentally
benign,
affordable
is
amongst
the
most
pressing
challenges
for
future
socio-economic
development.
Journal of the American Chemical Society,
Journal Year:
2020,
Volume and Issue:
142(15), P. 7036 - 7046
Published: March 30, 2020
The
limitations
of
the
Haber-Bosch
reaction,
particularly
high-temperature
operation,
have
ignited
new
interests
in
low-temperature
ammonia-synthesis
scenarios.
Ambient
N2
electroreduction
is
a
compelling
alternative
but
impeded
by
low
ammonia
production
rate
(mostly
<10
mmol
gcat-1
h-1),
small
partial
current
density
(<1
mA
cm-2),
and
high-selectivity
hydrogen-evolving
side
reaction.
Herein,
we
report
that
room-temperature
nitrate
catalyzed
strained
ruthenium
nanoclusters
generates
at
higher
(5.56
mol
h-1)
than
process.
primary
contributor
to
such
performance
hydrogen
radicals,
which
are
generated
suppressing
hydrogen-hydrogen
dimerization
during
water
splitting
enabled
tensile
lattice
strains.
radicals
expedite
nitrate-to-ammonia
conversion
hydrogenating
intermediates
rate-limiting
steps
lower
kinetic
barriers.
nanostructures
can
maintain
nearly
100%
ammonia-evolving
selectivity
>120
cm-2
densities
for
100
h
due
robust
subsurface
Ru-O
coordination.
These
findings
highlight
potential
real-world,
synthesis.
ACS Catalysis,
Journal Year:
2019,
Volume and Issue:
9(11), P. 9973 - 10011
Published: Sept. 25, 2019
As
a
highly
appealing
technology
for
hydrogen
generation,
water
electrolysis
including
oxygen
evolution
reaction
(OER)
at
the
anode
and
(HER)
cathode
largely
depends
on
availability
of
efficient
electrocatalysts.
Accordingly,
over
past
years,
much
effort
has
been
made
to
develop
various
electrocatalysts
with
superior
performance
reduced
cost.
Among
them,
ruthenium
(Ru)-based
materials
OER
HER
are
very
promising
because
their
prominent
catalytic
activity,
pH-universal
application,
cheapest
price
among
precious
metal
family,
so
on.
Herein,
recent
advances
in
this
hot
research
field
comprehensively
reviewed.
A
general
description
about
splitting
is
presented
understand
mechanism
proposed
scaling
relations
toward
activities,
key
stability
issues
Ru-based
further
given.
Subsequently,
Ru-involving
introduced
classified
into
different
groups
improving
or
optimizing
electrocatalytic
properties,
special
focus
several
significant
bifunctional
along
simulated
electrolyzer.
Finally,
perspective
existing
challenges
future
progress
catalysts
provided.
The
main
aim
here
shed
some
light
design
construction
emerging
energy
storage
conversion
technologies.
Chemical Society Reviews,
Journal Year:
2020,
Volume and Issue:
49(24), P. 9154 - 9196
Published: Jan. 1, 2020
Advances
of
non-precious-metal
catalysts
for
alkaline
water
electrolysis
are
reviewed,
highlighting
operando
techniques
and
theoretical
calculations
in
their
development.
Journal of Materials Chemistry A,
Journal Year:
2021,
Volume and Issue:
9(9), P. 5320 - 5363
Published: Jan. 1, 2021
This
review
summarizes
recent
advances
relating
to
transition
metal
sulfide
(TMS)-based
bifunctional
electrocatalysts,
providing
guidelines
for
the
design
and
fabrication
of
TMS-based
catalysts
practical
application
in
water
electrolysis.
Advanced Materials,
Journal Year:
2021,
Volume and Issue:
33(17)
Published: March 22, 2021
Abstract
Electrochemical
water
splitting
has
attracted
significant
attention
as
a
key
pathway
for
the
development
of
renewable
energy
systems.
Fabricating
efficient
electrocatalysts
these
processes
is
intensely
desired
to
reduce
their
overpotentials
and
facilitate
practical
applications.
Recently,
metal–organic
framework
(MOF)
nanoarchitectures
featuring
ultrahigh
surface
areas,
tunable
nanostructures,
excellent
porosities
have
emerged
promising
materials
highly
active
catalysts
electrochemical
splitting.
Herein,
most
pivotal
advances
in
recent
research
on
engineering
MOF
are
presented.
First,
design
catalytic
centers
MOF‐based/derived
summarized
compared
from
aspects
chemical
composition
optimization
structural
functionalization
at
atomic
molecular
levels.
Subsequently,
fast‐growing
breakthroughs
activities,
identification
sites,
fundamental
mechanisms
thoroughly
discussed.
Finally,
comprehensive
commentary
current
primary
challenges
future
perspectives
its
commercialization
hydrogen
production
provided.
Hereby,
new
insights
into
synthetic
principles
electrocatalysis
designing
utilization
offered,
thus
further
promoting
prosperity
wide
range
ACS Catalysis,
Journal Year:
2019,
Volume and Issue:
10(1), P. 412 - 419
Published: Nov. 26, 2019
Transition-metal
phosphides
have
been
shown
to
be
promising
electrocatalysts
in
water
for
both
hydrogen
evolution
reaction
(HER)
and
oxygen
(OER).
To
maximize
reactivity
toward
entails
limiting
the
catalyst
size
while
maintaining
avoiding
aggregation.
Frame-like
hollow
nanostructures
(nanoframes)
provide
required
open
structure
with
sufficient
channels
into
interior
volume.
We
demonstrate
here
design
synthesis
of
CoP
nanoframes
(CoP
NFs)
by
a
strategy
involving
precipitation,
chemical
etching,
low-temperature
phosphidation
steps.
It
results
impressive
bifunctional
catalytic
activities
HER
OER
consequently
enables
highly
efficient
electrolyzer
current
density
10
mA
cm–2
driven
cell
voltage
only
1.65
V.
The
has
generalized
preparation
nanoframe
Co
dichalcogenides
CoX2
NFs,
X
=
S,
Se,
Te.
electrochemical
measurements,
supported
functional
theory
calculations,
show
that
series
follow
sequence:
NFs
>
CoSe2
CoS2
CoTe2
NFs.
