Chemical Reviews,
Год журнала:
2023,
Номер
123(23), С. 12795 - 13208
Опубликована: Ноя. 15, 2023
Transition
metal
borides,
carbides,
pnictides,
and
chalcogenides
(X-ides)
have
emerged
as
a
class
of
materials
for
the
oxygen
evolution
reaction
(OER).
Because
their
high
earth
abundance,
electrical
conductivity,
OER
performance,
these
electrocatalysts
potential
to
enable
practical
application
green
energy
conversion
storage.
Under
potentials,
X-ide
demonstrate
various
degrees
oxidation
resistance
due
differences
in
chemical
composition,
crystal
structure,
morphology.
Depending
on
oxidation,
catalysts
will
fall
into
one
three
post-OER
electrocatalyst
categories:
fully
oxidized
oxide/(oxy)hydroxide
material,
partially
core@shell
unoxidized
material.
In
past
ten
years
(from
2013
2022),
over
890
peer-reviewed
research
papers
focused
electrocatalysts.
Previous
review
provided
limited
conclusions
omitted
significance
"catalytically
active
sites/species/phases"
this
review,
comprehensive
summary
(i)
experimental
parameters
(e.g.,
substrates,
loading
amounts,
geometric
overpotentials,
Tafel
slopes,
etc.)
(ii)
electrochemical
stability
tests
post-analyses
publications
from
2022
is
provided.
Both
mono
polyanion
X-ides
are
discussed
classified
with
respect
material
transformation
during
OER.
Special
analytical
techniques
employed
study
reconstruction
also
evaluated.
Additionally,
future
challenges
questions
yet
be
answered
each
section.
This
aims
provide
researchers
toolkit
approach
showcase
necessary
avenues
investigation.
Advanced Energy Materials,
Год журнала:
2019,
Номер
9(19)
Опубликована: Март 28, 2019
Abstract
Construction
of
well‐defined
metal–organic
framework
precursor
is
vital
to
derive
highly
efficient
transition
metal–carbon‐based
electrocatalyst
for
hydrogen
evolution
reaction
(HER)
and
oxygen
(OER)
in
water
splitting.
Herein,
a
novel
strategy
involving
an
situ
transformation
ultrathin
cobalt
layered
double
hydroxide
into
2D
zeolitic
imidazolate
(ZIF‐67)
nanosheets
grafted
with
3D
ZIF‐67
polyhedra
supported
on
the
surface
carbon
cloth
(2D/3D
ZIF‐67@CC)
proposed.
After
low‐temperature
pyrolysis,
this
can
be
further
converted
hybrid
composites
composed
ultrafine
nanoparticles
embedded
within
N‐doped
hollow
(Co@N‐CS/N‐HCP@CC).
Experimental
density
functional
theory
calculations
results
indicate
that
such
have
advantages
large
number
accessible
active
sites,
accelerated
charge/mass
transfer
ability,
synergistic
effect
components
as
well
optimal
adsorption
energy
change.
As
result,
obtained
Co@N‐CS/N‐HCP@CC
catalyst
requires
overpotentials
only
66
248
mV
reach
current
10
mA
cm
−2
HER
OER
1.0
m
KOH,
respectively.
Remarkably,
it
enables
alkali‐electrolyzer
at
low
cell
voltage
1.545
V,
superior
IrO
2
@CC||Pt/C@CC
couple
(1.592
V).
Abstract
The
efficient
electrocatalysis
plays
the
key
role
in
development
of
electrochemical
energy
conversion
technologies
to
alleviate
crisis.
Given
their
multiple
active
sites
and
large
specific
surface
areas
as
electrocatalysts,
metal‐organic
frameworks
(MOFs)
derivatives
have
attracted
considerable
interests
recent
years.
Specially,
exploring
roles
enhanced
MOFs
is
significant
for
understanding
developing
new
effective
electrocatalysts.
Recently,
vital
vacancies
has
been
proven
promote
electrocatalytic
processes
(such
H
2
or
O
evolution
reactions,
reduction
N
reactions).
In
order
in‐depth
effect
classification,
synthetic
strategy,
various
are
reviewed.
Also,
perspectives
on
challenges
opportunities
presented.
Nanoscale,
Год журнала:
2020,
Номер
12(23), С. 12249 - 12262
Опубликована: Янв. 1, 2020
The
urgent
demand
of
scalable
hydrogen
production
has
motivated
substantial
research
on
low
cost,
efficient
and
robust
catalysts
for
water
electrolysis.
In
order
to
replace
noble
metals
their
derivatives,
transition
metal
(Fe,
Co,
Ni,
Mo,
Cu,
etc.)
selenides
have
demonstrated
promising
catalysis
both
oxygen
evolutions.
Very
recently,
a
number
reports
presented
variety
approaches
enhance
electrocatalytic
activity.
This
review
summarizes
the
most
recent
progress
in
selenide
electrocatalysts
HER,
OER,
overall
splitting.
merits
limitations
are
also
discussed
aspects
structure
composition.
Moreover,
we
highlight
new
strategies
future
challenges
design
synthesis
high
performance
electrocatalysts.
Chemical Reviews,
Год журнала:
2024,
Номер
124(7), С. 3694 - 3812
Опубликована: Март 22, 2024
Electrocatalytic
water
splitting
driven
by
renewable
electricity
has
been
recognized
as
a
promising
approach
for
green
hydrogen
production.
Different
from
conventional
strategies
in
developing
electrocatalysts
the
two
half-reactions
of
(e.g.,
and
oxygen
evolution
reactions,
HER
OER)
separately,
there
growing
interest
designing
bifunctional
electrocatalysts,
which
are
able
to
catalyze
both
OER.
In
addition,
considering
high
overpotentials
required
OER
while
limited
value
produced
oxygen,
is
another
rapidly
exploring
alternative
oxidation
reactions
replace
hybrid
toward
energy-efficient
generation.
This
Review
begins
with
an
introduction
on
fundamental
aspects
splitting,
followed
thorough
discussion
various
physicochemical
characterization
techniques
that
frequently
employed
probing
active
sites,
emphasis
reconstruction
during
redox
electrolysis.
The
design,
synthesis,
performance
diverse
based
noble
metals,
nonprecious
metal-free
nanocarbons,
overall
acidic
alkaline
electrolytes,
thoroughly
summarized
compared.
Next,
their
application
also
presented,
wherein
anodic
include
sacrificing
agents
oxidation,
pollutants
oxidative
degradation,
organics
upgrading.
Finally,
concise
statement
current
challenges
future
opportunities
presented
hope
guiding
endeavors
quest
sustainable
The
rational
construction
of
earth-abundant
and
advanced
electrocatalysts
for
oxygen
evolution
reaction
(OER)
is
extremely
desired
significant
to
seawater
electrolysis.
Herein,
by
directly
etching
Ni3
S2
nanosheets
through
potassium
ferricyanide,
a
novel
self-sacrificing
template
strategy
proposed
realize
the
in
situ
growth
NiFe-based
Prussian
blue
analogs
(NiFe
PBA)
on
an
interfacial
redox
reaction.
well-designed
@NiFe
PBA
composite
as
precursor
displays
unique
spherical
magic
cube
architecture
composed
nanocubes,
which
even
maintains
after
phosphating
treatment
obtain
derived
/Fe-NiPx
nickel
foam.
Specifically,
alkaline
seawater,
OER
precatalyst
marvelously
realizes
ultralow
overpotentials
336
351
mV
at
large
current
densities
500
1000
mA
cm-2
,
respectively,
with
remarkable
durability
over
225
h,
outperforming
most
reported
electrocatalysts.
Experimentally,
series
characterization
results
confirm
reconstruction
behavior
surface,
leading
formation
Ni(OH)2
/Ni(Fe)OOH
abundant
vacancies
grain
boundaries,
constructs
system
responsible
catalytic
activity.
Theoretical
calculation
further
verify
enhanced
activity
system,
unveil
that
Fe-Ni2
P/FeOOH
active
origin
contributes
central
