Abstract
Using
electrochemical
water
splitting
to
produce
hydrogen
is
still
a
grand
challenge
due
the
lack
of
economical
and
efficient
Pt‐free
catalysts.
Herein,
single‐atom
Ru
supported
on
MoS
2
(SA‐Ru‐MoS
)
electrocatalyst
for
evolution
reaction
(HER)
reported.
Results
indicate
that
doping
induces
phase
transition
generation
S
vacancies,
which
significantly
improve
performance
inert
2D
HER.
In
particular,
SA‐Ru‐MoS
exhibits
low
overpotential
76
mV
at
10
mA
cm
−2
in
alkaline
media,
superior
most
electrocatalysts
previously
reported
literature.
Combining
experimental
results
with
density
functional
theory
(DFT)
calculations,
it
further
revealed
origin
high
HER
activity
mainly
attributed
synergy
effects
vacancies
local
structure
,
efficiently
tailors
electronic
extremely
reduces
energy
barrier
Volmer
step
adsorption/desorption
H*
intermediate
step.
short,
this
work
provides
strategy
transfer
into
highly
electrocatalysts.
Chemical Society Reviews,
Год журнала:
2022,
Номер
51(11), С. 4583 - 4762
Опубликована: Янв. 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.
ACS Catalysis,
Год журнала:
2019,
Номер
9(11), С. 9973 - 10011
Опубликована: Сен. 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.
Advanced Materials,
Год журнала:
2020,
Номер
33(6)
Опубликована: Июнь 24, 2020
Hydrogen
has
been
deemed
as
an
ideal
substitute
fuel
to
fossil
energy
because
of
its
renewability
and
the
highest
density
among
all
chemical
fuels.
One
most
economical,
ecofriendly,
high-performance
ways
hydrogen
production
is
electrochemical
water
splitting.
Recently,
2D
transition
metal
dichalcogenides
(also
known
TMDs)
showed
their
utilization
potentiality
cost-effective
evolution
reaction
(HER)
catalysts
in
electrolysis.
Herein,
recent
representative
research
efforts
systematic
progress
made
TMDs
are
reviewed,
future
opportunities
challenges
discussed.
Furthermore,
general
methods
synthesizing
materials
introduced
detail
advantages
disadvantages
for
some
specific
provided.
This
explanation
includes
several
important
regulation
strategies
creating
more
active
sites,
heteroatoms
doping,
phase
engineering,
construction
heterostructures,
synergistic
modulation
which
capable
optimizing
electrical
conductivity,
exposure
catalytic
barrier
electrode
material
boost
HER
kinetics.
In
last
section,
current
obstacles
chances
development
electrocatalysts
proposed
provide
insight
into
valuable
guidelines
fabricating
effective
electrocatalysts.
Angewandte Chemie International Edition,
Год журнала:
2021,
Номер
60(34), С. 18821 - 18829
Опубликована: Июнь 14, 2021
Abstract
The
oxygen
evolution
reaction
(OER)
is
a
key
for
many
electrochemical
devices.
To
date,
OER
electrocatalysts
function
well
in
alkaline
media,
but
exhibit
poor
performances
neutral
and
acidic
especially
the
stability.
Herein,
sodium‐decorated
amorphous/crystalline
RuO
2
with
rich
vacancies
(a/c‐RuO
)
was
developed
as
pH‐universal
electrocatalyst.
a/c‐RuO
shows
remarkable
resistance
to
acid
corrosion
oxidation
during
OER,
which
leads
an
extremely
high
catalytic
stability,
confirmed
by
negligible
overpotential
increase
after
continuously
catalyzing
60
h
at
pH=1.
Besides,
also
exhibits
superior
activities
commercial
most
reported
catalysts
under
all
pH
conditions.
Theoretical
calculations
indicated
that
introduction
of
Na
dopant
vacancy
weakens
adsorption
strength
intermediates
engineering
d
‐band
center,
thereby
lowering
energy
barrier
OER.
Chemical Reviews,
Год журнала:
2022,
Номер
122(13), С. 11830 - 11895
Опубликована: Апрель 20, 2022
This
Review
provides
an
overview
of
the
emerging
concepts
catalysts,
membranes,
and
membrane
electrode
assemblies
(MEAs)
for
water
electrolyzers
with
anion-exchange
membranes
(AEMs),
also
known
as
zero-gap
alkaline
electrolyzers.
Much
recent
progress
is
due
to
improvements
in
materials
chemistry,
MEA
designs,
optimized
operation
conditions.
Research
on
polymers
(AEPs)
has
focused
cationic
head/backbone/side-chain
structures
key
properties
such
ionic
conductivity
stability.
Several
approaches,
cross-linking,
microphase,
organic/inorganic
composites,
have
been
proposed
improve
performance
chemical
mechanical
stability
AEMs.
Numerous
AEMs
now
exceed
values
0.1
S/cm
(at
60-80
°C),
although
specifically
at
temperatures
exceeding
60
°C
needs
further
enhancement.
The
oxygen
evolution
reaction
(OER)
still
a
limiting
factor.
An
analysis
thin-layer
OER
data
suggests
that
NiFe-type
catalysts
highest
activity.
There
debate
active-site
mechanism
NiFe
their
long-term
be
understood.
Addition
Co
increases
these
catalysts.
same
hydrogen
(HER)
shows
carbon-supported
Pt
dominating,
PtNi
alloys
clusters
Ni(OH)
Journal of Materials Chemistry A,
Год журнала:
2021,
Номер
9(9), С. 5320 - 5363
Опубликована: Янв. 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.
Chemical Society Reviews,
Год журнала:
2021,
Номер
50(17), С. 9817 - 9844
Опубликована: Янв. 1, 2021
This
review
summarizes
the
recent
progress
related
to
field
of
doping
regulation
in
transition
metal
compounds,
aiming
give
an
overview
this
strategy
for
designing
high-performance
catalysts
towards
electrocatalytic
applications.
ACS Catalysis,
Год журнала:
2019,
Номер
10(1), С. 412 - 419
Опубликована: Ноя. 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.
Advanced Functional Materials,
Год журнала:
2021,
Номер
31(27)
Опубликована: Май 5, 2021
Abstract
A
new
type
of
lanthanum‐based
high
entropy
perovskite
oxide
(HEPO)
electrocatalyst
for
the
oxygen
evolution
reaction
is
reported.
The
B‐site
lattices
in
HEPO
consist
five
consecutive
first‐row
transition
metals,
including
Cr,
Mn,
Fe,
Co,
and
Ni.
Equimolar
non‐equimolar
electrocatalysts
are
studied
their
OER
electrocatalytic
performance.
In
HEPOs,
concentration
one
metals
doubled
individual
samples.
performances
all
HEPOs
outperform
single
oxides.
optimized
La(CrMnFeCo
2
Ni)O
3
exhibits
an
outstanding
overpotential
325
mV
at
a
current
density
10
mA
cm
−2
excellent
electrochemical
stability
after
50
h
testing.
