Advanced Functional Materials,
Год журнала:
2020,
Номер
31(12)
Опубликована: Окт. 29, 2020
Abstract
Electroreduction
of
small
molecules
such
as
H
2
O,
CO
,
and
N
for
producing
clean
fuels
or
valuable
chemicals
provides
a
sustainable
approach
to
meet
the
increasing
global
energy
demands
alleviate
concern
on
climate
change
resulting
from
fossil
fuel
consumption.
On
path
implement
this
purpose,
however,
several
scientific
hurdles
remain,
one
which
is
low
efficiency
due
sluggish
kinetics
paired
oxygen
evolution
reaction
(OER).
In
response,
it
highly
desirable
synthesize
high‐performance
cost‐effective
OER
electrocatalysts.
Recent
advances
have
witnessed
surface
reconstruction
engineering
salient
tool
significantly
improve
catalytic
performance
review,
recent
progress
reconstructed
electrocatalysts
future
opportunities
are
discussed.
A
brief
introduction
fundamentals
experimental
approaches
generating
characterizing
active
sites
in
nanocatalysts
given
first,
followed
by
an
expanded
discussion
with
improved
activities,
particular
emphasis
understanding
correlation
between
dynamics
activities.
Finally,
prospect
communities
harnessing
reconstruction‐promoted
electrochemical
water
oxidation
will
be
provided.
Advanced Materials,
Год журнала:
2021,
Номер
33(31)
Опубликована: Июнь 12, 2021
Abstract
Hydrogen
economy
has
emerged
as
a
very
promising
alternative
to
the
current
hydrocarbon
economy,
which
involves
process
of
harvesting
renewable
energy
split
water
into
hydrogen
and
oxygen
then
further
utilization
clean
fuel.
The
production
by
electrolysis
is
an
essential
prerequisite
with
zero
carbon
emission.
Among
various
technologies,
alkaline
splitting
been
commercialized
for
more
than
100
years,
representing
most
mature
economic
technology.
Here,
historic
development
overviewed,
several
critical
electrochemical
parameters
are
discussed.
After
that,
advanced
nonprecious
metal
electrocatalysts
that
recently
negotiating
evolution
reaction
(OER)
(HER)
discussed,
including
transition
oxides,
(oxy)hydroxides,
chalcogenides,
phosphides,
nitrides
OER,
well
alloys,
carbides
HER.
In
this
section,
particular
attention
paid
catalyst
synthesis,
activity
stability
challenges,
performance
improvement,
industry‐relevant
developments.
Some
recent
works
about
scaled‐up
novel
electrode
designs,
seawater
also
spotlighted.
Finally,
outlook
on
future
challenges
opportunities
offered,
potential
directions
speculated.
Journal of the American Chemical Society,
Год журнала:
2020,
Номер
142(28), С. 12087 - 12095
Опубликована: Июнь 14, 2020
The
exact
role
of
a
defect
structure
on
transition
metal
compounds
for
electrocatalytic
oxygen
evolution
reaction
(OER),
which
is
very
dynamic
process,
remains
unclear.
Studying
the
structure-activity
relationship
defective
electrocatalysts
under
operando
conditions
crucial
understanding
their
intrinsic
mechanism
and
behavior
sites.
Co3O4
with
rich
vacancy
(VO)
has
been
reported
to
efficiently
catalyze
OER.
Herein,
we
constructed
pure
spinel
VO-rich
as
catalyst
models
study
investigate
sites
during
OER
process
by
various
characterizations.
Operando
electrochemical
impedance
spectroscopy
(EIS)
cyclic
voltammetry
(CV)
implied
that
VO
could
facilitate
pre-oxidation
low-valence
Co
(Co2+,
part
was
induced
balance
charge)
at
relatively
lower
applied
potential.
This
observation
confirmed
initialize
surface
reconstruction
VO-Co3O4
prior
occurrence
process.
quasi-operando
X-ray
photoelectron
(XPS)
absorption
fine
(XAFS)
results
further
demonstrated
vacancies
were
filled
OH•
first
facilitated
promoted
reconstruction/deprotonation
intermediate
Co-OOH•.
work
provides
insight
into
in
way
observing
identifying
real
active
electrocatalysis
current
finding
would
motivate
community
focus
more
electrocatalysts.
Advanced Functional Materials,
Год журнала:
2020,
Номер
30(15)
Опубликована: Фев. 16, 2020
The
development
of
low-cost,
high-efficiency,
and
robust
electrocatalysts
for
the
oxygen
evolution
reaction
(OER)
is
urgently
needed
to
address
energy
crisis.
In
recent
years,
non-noble-metal-based
OER
have
attracted
tremendous
research
attention.
Beginning
with
introduction
some
evaluation
criteria
OER,
current
are
reviewed,
classification
metals/alloys,
oxides,
hydroxides,
chalcogenides,
phosphides,
phosphates/borates,
other
compounds,
along
their
advantages
shortcomings.
knowledge
mechanisms
practical
applications
also
summarized
developing
more
efficient
electrocatalysts.
Finally,
states,
challenges,
perspectives
discussed.
Chemical Society Reviews,
Год журнала:
2021,
Номер
50(15), С. 8428 - 8469
Опубликована: Янв. 1, 2021
The
recent
progress
in
activating
surface
reconstruction
by
integrating
advanced
characterizations
with
theoretical
calculations
for
high-efficiency
oxygen
evolution
reaction
is
reviewed.
Chemical Society Reviews,
Год журнала:
2020,
Номер
49(24), С. 9154 - 9196
Опубликована: Янв. 1, 2020
Advances
of
non-precious-metal
catalysts
for
alkaline
water
electrolysis
are
reviewed,
highlighting
operando
techniques
and
theoretical
calculations
in
their
development.
Angewandte Chemie International Edition,
Год журнала:
2019,
Номер
59(12), С. 4634 - 4650
Опубликована: Сен. 17, 2019
Abstract
In
view
of
the
clean
and
sustainable
energy,
metal–organic
frameworks
(MOFs)
based
materials,
including
pristine
MOFs,
MOF
composites,
their
derivatives
are
emerging
as
unique
electrocatalysts
for
oxygen
reduction
reaction
(ORR).
Thanks
to
tunable
compositions
diverse
structures,
efficient
MOF‐based
materials
provide
new
opportunities
accelerate
sluggish
ORR
at
cathode
in
fuel
cells
metal–air
batteries.
This
Minireview
first
provides
some
introduction
followed
by
classification
towards
ORR.
Recent
breakthroughs
engineering
highlighted
with
an
emphasis
on
synthesis
strategy,
component,
morphology,
structure,
electrocatalytic
performance,
mechanism.
Finally,
current
challenges
future
perspectives
also
discussed.
Chemical Reviews,
Год журнала:
2020,
Номер
121(2), С. 882 - 961
Опубликована: Сен. 28, 2020
During
the
last
decades,
X-ray
absorption
spectroscopy
(XAS)
has
become
an
indispensable
method
for
probing
structure
and
composition
of
heterogeneous
catalysts,
revealing
nature
active
sites
establishing
links
between
structural
motifs
in
a
catalyst,
local
electronic
structure,
catalytic
properties.
Here
we
discuss
fundamental
principles
XAS
describe
progress
instrumentation
data
analysis
approaches
undertaken
deciphering
near
edge
(XANES)
extended
fine
(EXAFS)
spectra.
Recent
usages
field
catalysis,
with
emphasis
on
examples
concerning
electrocatalysis,
will
be
presented.
The
latter
is
rapidly
developing
immense
industrial
applications
but
also
unique
challenges
terms
experimental
characterization
restrictions
advanced
modeling
required.
This
review
highlight
new
insight
that
can
gained
complex
real-world
electrocatalysts
including
their
working
mechanisms
dynamic
processes
taking
place
course
chemical
reaction.
More
specifically,
situ
operando
to
probe
catalyst’s
interactions
environment
(support,
electrolyte,
ligands,
adsorbates,
reaction
products,
intermediates)
its
structural,
chemical,
transformations
as
it
adapts
conditions.
Energy & Environmental Science,
Год журнала:
2021,
Номер
14(4), С. 2036 - 2089
Опубликована: Янв. 1, 2021
Heteroatom-doped
carbon
materials
(HDCMs)
have
been
widely
studied
as
some
of
the
most
prominent
material
candidates
for
use
in
a
wide
range
applications,
such
batteries,
supercapacitors
(SCs),
and
oxygen
reduction
reaction
(ORR).
Advanced Materials,
Год журнала:
2020,
Номер
32(44)
Опубликована: Июль 14, 2020
Abstract
Electrocatalysis
is
at
the
center
of
many
sustainable
energy
conversion
technologies
that
are
being
developed
to
reduce
dependence
on
fossil
fuels.
The
past
decade
has
witnessed
significant
progresses
in
exploitation
advanced
electrocatalysts
for
diverse
electrochemical
reactions
involved
electrolyzers
and
fuel
cells,
such
as
hydrogen
evolution
reaction
(HER),
oxygen
reduction
(ORR),
CO
2
(CO
RR),
nitrogen
(NRR),
(OER).
Herein,
recent
research
advances
made
porous
these
five
important
reviewed.
In
discussions,
an
attempt
highlight
advantages
multiobjective
optimization
surface
active
sites
including
not
only
their
density
accessibility
but
also
intrinsic
activity.
First,
current
knowledge
about
electrocatalytic
briefly
summarized.
Then,
mechanisms
above‐mentioned
(HER,
ORR,
RR,
NRR,
OER),
challenges
faced
by
reactions,
efforts
meet
using
examined.
Finally,
future
directions
synthetic
strategies
leading
materials,
insights
into
sites,
standardized
tests
performance
requirements
discussed.
