Advanced Materials,
Journal Year:
2022,
Volume and Issue:
34(41)
Published: Aug. 21, 2022
Platinum-based
catalysts
occupy
a
pivotal
position
in
diverse
catalytic
applications
hydrogen
chemistry
and
electrochemistry,
for
instance,
the
evolution
reactions
(HER).
While
adsorbed
Pt
atoms
on
supports
often
cause
severe
mismatching
electronic
structures
HER
behaviors
from
metallic
due
to
different
energy
level
distribution
of
electron
orbitals.
Here,
design
crystalline
lattice-confined
atomic
metal
carbides
using
Pt-centered
polyoxometalate
frameworks
with
strong
PtO-metal
covalent
bonds
is
reported.
Remarkably,
tungsten
(Ptdoped
@WCx
,
both
W
have
radii
1.3
Å)
exhibit
near-zero
valence
states
similar
as
Pt,
thus
delivering
matched
distributions
5dz
2
H
1s
orbitals
acidic
behaviors.
In
alkaline
conditions,
Ptdoped
exhibits
40
times
greater
mass
activity
(49.5
A
mgPt-1
at
η
=
150
mV)
than
Pt@C
because
favorable
water
dissociation
H*
transport.
These
findings
offer
universal
pathway
construct
urgently
needed
atomic-scale
broad
reactions.
Advanced Materials,
Journal Year:
2021,
Volume and Issue:
33(48)
Published: Sept. 24, 2021
Abstract
Water
electrolysis
is
a
sustainable
technology
for
hydrogen
production
since
this
process
can
utilize
the
intermittent
electricity
generated
by
renewable
energy
such
as
solar,
wind,
and
hydro.
However,
large‐scale
application
of
restricted
high
consumption
due
to
large
potential
gap
(
>
1.23
V)
between
anodic
oxygen
evolution
reaction
cathodic
(HER).
Herein,
novel
efficient
system
developed
coupling
glucose‐assisted
Cu(I)/Cu(II)
redox
with
HER.
The
onset
electrooxidation
Cu(I)
Cu(II)
low
0.7
V
RHE
(vs
reversible
electrode).
In
situ
Raman
spectroscopy,
ex
X‐ray
photoelectron
density
functional
theory
calculation
demonstrates
that
glucose
in
electrolyte
reduce
into
instantaneously
via
thermocatalysis
process,
thus
completing
cycle
redox.
assembled
electrolyzer
only
requires
voltage
input
0.92
achieve
current
100
mA
cm
−2
.
Consequently,
per
cubic
H
2
produced
2.2
kWh,
half
value
conventional
water
(4.5
kWh).
This
work
provides
promising
strategy
low‐cost,
high‐purity
eScience,
Journal Year:
2023,
Volume and Issue:
3(2), P. 100111 - 100111
Published: Feb. 15, 2023
Direct
electrolytic
splitting
of
seawater
for
the
production
H2
using
ocean
energy
is
a
promising
technology
that
can
help
achieve
carbon
neutrality.
However,
owing
to
high
concentrations
chlorine
ions
in
seawater,
evolution
reaction
always
competes
with
oxygen
(OER)
at
anode,
and
chloride
corrosion
occurs
on
both
anode
cathode.
Thus,
effective
electrocatalysts
selectivity
toward
OER
excellent
resistance
should
be
developed.
In
this
critical
review,
we
focus
prospects
state-of-the-art
metal-oxide
electrocatalysts,
including
noble
metal
oxides,
non-noble
oxides
their
compounds,
spinel-
perovskite-type
splitting.
We
elucidate
chemical
properties,
selectivity,
outstanding
anti-chlorine-corrosion
performance,
mechanisms.
particular,
review
operate
current
densities,
near
industrial
application
levels,
based
special
catalyst
design
strategies.
Advanced Functional Materials,
Journal Year:
2022,
Volume and Issue:
33(7)
Published: Dec. 9, 2022
Abstract
Developing
efficient
and
inexpensive
electrocatalysts
for
the
hydrogen
evolution
reaction
(HER)
is
critical
to
commercial
viability
of
electrochemical
clean
energy
technologies.
Transition
metal
phosphides
(TMPs),
with
merits
abundant
reserves,
unique
structure,
tunable
composition,
high
electronic
conductivity,
are
recognized
as
attractive
HER
catalytic
materials.
Nevertheless,
electrocatalytic
activity
TMPs
still
limited
by
various
thorough
issues
inherent
performance
bottlenecks.
In
this
review,
these
carefully
sorted,
corresponding
reasonable
explanations
solutions
elucidated
on
basis
origins
TMPs.
Subsequently,
highly
targeted
multiscale
strategies
improve
comprehensively
presented.
Additionally,
scientific
constructing
high‐efficiency
TMP‐based
proposed.
Finally,
process,
mechanism
research,
catalyst
construction,
their
application
expansion
mentioned
challenges
future
directions
research
field.
Expectedly,
review
offers
professional
guidelines
rational
design
practical
catalysts.
Advanced Materials,
Journal Year:
2022,
Volume and Issue:
34(12)
Published: Jan. 11, 2022
Rational
exploration
of
efficient,
inexpensive,
and
robust
electrocatalysts
is
critical
for
the
efficient
water
splitting.
Conjugated
conductive
metal-organic
frameworks
(cMOFs)
with
multicomponent
layered
double
hydroxides
(LDHs)
to
construct
bifunctional
heterostructure
catalysts
are
considered
as
an
but
complicated
strategy.
Here,
fabrication
a
cMOF/LDH
hetero-nanotree
array
catalyst
(CoNiRu-NT)
coupled
monodispersed
ruthenium
(Ru)
sites
via
controllable
grafted-growth
strategy
reported.
Rich-amino
hexaiminotriphenylene
linkers
coordinate
LDH
nanotrunk
form
cMOF
nanobranches,
providing
numerous
anchoring
precisely
confine
stabilize
RuN4
sites.
Moreover,
reduced
Ru
moieties
facilitate
H2
O
adsorption
dissociation,
heterointerface
between
further
modifies
chemical
electronic
structures.
Optimized
CoNiRu-NT
displays
significant
increase
in
electrochemical
water-splitting
properties
alkaline
media,
affording
low
overpotentials
22
mV
at
10
mA
cm-2
255
20
hydrogen
evolution
reaction
oxygen
reaction,
respectively.
In
actual
system,
drives
overall
splitting
cell
voltage
1.47
V
reach
.
This
performance
comparable
that
pure
noble-metal-based
materials
superior
most
reported
MOF-based
catalysts.
Energy & Environmental Science,
Journal Year:
2023,
Volume and Issue:
16(4), P. 1384 - 1430
Published: Jan. 1, 2023
This
review
presents
the
state-of-the-art
MEAs,
including
key
components
and
preparation
technologies.
Especially,
overall
design
strategies
of
MEAs
are
discussed
to
promote
high-performance
alkaline
water
electrolysis.
ACS Catalysis,
Journal Year:
2023,
Volume and Issue:
13(7), P. 4091 - 4100
Published: March 9, 2023
The
urea
oxidation
reaction
(UOR)
is
considered
as
an
alternative
to
the
oxygen
evolution
for
high-efficiency
hydrogen
production.
However,
molecule
relatively
complex,
containing
both
electron-donating
amino
(−NH2)
and
electron-withdrawing
carbonyl
(C═O)
groups,
understanding
influence
of
different
functional
groups
on
adsorption
behavior
conducive
rational
design
preparation
high-performance
UOR
catalysts.
Herein,
we
report
a
simple
synthesis
Ni3N/Mo2N
heterostructure
systematic
investigation
urea-assisted
electrolytic
Both
temperature-programmed
desorption
theoretical
calculations
decipher
that
−NH2
C═O
are
more
easily
adsorbed
Ni3N
Mo2N,
respectively.
Meanwhile,
could
combine
enhance
advantages
individual
components,
optimizing
urea.
Besides,
this
also
beneficial
improving
performance.
As
expected,
in
two-electrode
water
electrolyzer
utilizing
bifunctional
catalysts,
production
can
readily
occur
at
evidently
lower
voltage
(1.36
V@10
mA
cm–2),
which
much
than
traditional
electrolysis,
well
7
times
higher
rate
achieved.
