Advanced Materials,
Journal Year:
2020,
Volume and Issue:
32(40)
Published: Sept. 2, 2020
Evaluating
the
alkaline
water
electrolysis
(AWE)
at
50–80
°C
required
in
industry
can
veritably
promote
practical
applications.
Here,
thermally
induced
complete
reconstruction
(TICR)
of
molybdate
oxygen
evolution
reaction
(OER)
pre-catalysts
51.9
and
its
fundamental
mechanism
are
uncovered.
The
dynamic
processes,
real
active
species,
stereoscopic
structural
characteristics
identified
by
situ
low-/high-temperature
Raman,
ex
microscopy,
electron
tomography.
completely
reconstructed
(CR)
catalyst
(denoted
as
cat.-51.9)
is
interconnected
thermodynamically
stable
(oxy)hydroxide
nanoparticles,
with
abundant
boundaries
low
crystallinity.
For
OER,
cat.-51.9
exhibits
a
overpotential
(282.3
mV
20
mA
cm−2,
25.0
°C)
ultrastable
catalysis
(250
h,
negligible
activity
decay
19.6
µV
h−1).
experimental
observations
combined
theoretical
analyses
confirm
fast
catalytic
kinetics
enabled
co-effect
vacancies.
coupled
MoO2-Ni
hydrogen-evolving
arrays
provide
operation
for
220
h.
This
work
uncovers
new
phenomenon
under
realistic
conditions
exceptional
durability
CR
catalysts
toward
high-temperature
AWE.
Energy & Environmental Science,
Journal Year:
2021,
Volume and Issue:
14(4), P. 1897 - 1927
Published: Jan. 1, 2021
The
review
summarizes
transition
metal-based
bimetallic
MOFs
and
their
derived
materials
as
electrocatalytic
for
the
OER.
mechanisms
of
OER
probed
by
DFT
calculation
andin
situcharacterization
techniques
are
also
discussed.
Advanced Functional Materials,
Journal Year:
2020,
Volume and Issue:
31(1)
Published: Sept. 28, 2020
Abstract
Developing
high‐performance
and
cost‐effective
bifunctional
electrocatalysts
for
large‐scale
water
electrolysis
is
desirable
but
remains
a
significant
challenge.
Most
existing
nano‐
micro‐structured
require
complex
synthetic
procedures,
making
scale‐up
highly
challenging.
Here,
heterogeneous
Ni
2
P‐Fe
P
microsheet
synthesized
by
directly
soaking
foam
in
hydrochloric
acid
an
iron
nitrate
solution,
followed
phosphidation.
Benefiting
from
high
intrinsic
activity,
abundant
active
sites,
superior
transfer
coefficient,
this
self‐supported
electrocatalyst
shows
superb
catalytic
activity
toward
overall
splitting,
requiring
low
voltages
of
1.682
1.865
V
to
attain
current
densities
100
500
mA
cm
−2
1
m
KOH,
respectively.
Such
performance
the
benchmark
IrO
||
Pt/C
pair
also
places
among
best
catalysts
reported
thus
far.
Furthermore,
its
enhanced
corrosion
resistance
hydrophilic
surface
make
it
suitable
seawater
splitting.
It
able
achieve
KOH
at
1.811
2.004
V,
respectively,
which,
together
with
robust
durability,
demonstrates
great
potential
realistic
electrolysis.
This
work
presents
general
economic
approach
fabrication
metallic
phosphide
water/seawater
electrocatalysis.
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
Advanced Functional Materials,
Journal Year:
2022,
Volume and Issue:
32(21)
Published: March 13, 2022
Abstract
The
oxygen
evolution
reaction
(OER)
generally
exists
in
electrochemistry‐enabled
applications
that
are
coupled
with
cathodic
reactions
like
hydrogen
evolution,
carbon
dioxide
reduction,
ammonia
synthesis,
and
electrocatalytic
hydrogenation.
OER
heavily
impacts
the
overall
energy
efficiency
of
these
devices
because
sluggish
kinetics
result
a
huge
overpotential,
thus,
large
amount
efficient
catalysts
needed.
benchmark
iridium
ruthenium
(Ir/Ru)‐based
materials
(mostly
used
acid
media)
are,
however,
significantly
limited
by
their
scarcity.
Non‐precious
metal‐based
(NPMCs)
have
emerged
as
most
promising
alternatives;
they
tend
to
degrade
quickly
under
harsh
operating
conditions
typical
devices.
Another
challenge
is
unsatisfying
performance
when
integrated
real‐world
Herein,
active
sites
for
three
mainstream
types
NPMCs
including
non‐precious
transition
metal
oxides/(oxy)hydroxides,
metal‐free
materials,
hybrid
composites
reviewed.
In
addition,
possible
degradation
mechanisms
mitigation
strategies
discussed
detail.
This
review
also
provides
insights
into
gaps
between
R&D
practical
Chemical Society Reviews,
Journal Year:
2021,
Volume and Issue:
50(17), P. 9817 - 9844
Published: Jan. 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.
Nature Communications,
Journal Year:
2020,
Volume and Issue:
11(1)
Published: Oct. 23, 2020
Designing
highly
durable
and
active
electrocatalysts
applied
in
polymer
electrolyte
membrane
(PEM)
electrolyzer
for
the
oxygen
evolution
reaction
remains
a
grand
challenge
due
to
high
dissolution
of
catalysts
acidic
electrolyte.
Hindering
formation
vacancies
by
tuning
electronic
structure
improve
durability
activity
was
theoretically
effective
but
rarely
reported.
Herein
we
demonstrated
rationally
RuO2
with
introducing
W
Er,
which
significantly
increased
vacancy
energy.
The
representative
W0.2Er0.1Ru0.7O2-δ
required
super-low
overpotential
168
mV
(10
mA
cm-2)
accompanied
record
stability
500
h
More
remarkably,
it
could
operate
steadily
120
(100
PEM
device.
Density
functional
theory
calculations
revealed
co-doping
Er
tuned
charge
redistribution,
prohibited
soluble
Rux>4
lowered
adsorption
energies
intermediates.
Advanced Materials,
Journal Year:
2021,
Volume and Issue:
33(33)
Published: July 1, 2021
Abstract
The
electrochemical
method
of
combining
N
2
and
H
O
to
produce
ammonia
(i.e.,
the
nitrogen
reduction
reaction
[E‐NRR])
continues
draw
attention
as
it
is
both
environmentally
friendly
well
suited
for
a
progressively
distributed
farm
economy.
Despite
multitude
recent
works
on
E‐NRR,
further
progress
in
this
field
faces
bottleneck.
On
one
hand,
despite
extensive
exploration
trial‐and‐error
evaluation
E‐NRR
catalysts,
no
study
has
stood
out
become
stage
protagonist.
other
current
level
production
(microgram‐scale)
an
almost
insurmountable
obstacle
its
qualitative
quantitative
determination,
hindering
discrimination
between
true
activity
contamination.
Herein
i)
popular
theory
mechanism
NRR
are
introduced;
ii)
comprehensive
summary
related
catalysts
provided;
iii)
operational
procedures
addressed,
including
acquisition
key
metrics,
challenges
faced,
most
suitable
solutions;
iv)
guiding
principles
standardized
recommendations
emphasized
future
research
directions
prospects
provided.
