Carbon Energy,
Journal Year:
2023,
Volume and Issue:
5(7)
Published: Feb. 24, 2023
Abstract
A
fuel
cell
is
an
energy
conversion
device
that
can
continuously
input
and
oxidant
into
the
through
electrochemical
reaction
to
release
electrical
energy.
Although
noble
metals
show
good
activity
in
cell‐related
reactions,
their
ever‐increasing
price
considerably
hinders
industrial
application.
Improvement
of
atom
utilization
efficiency
considered
one
most
effective
strategies
improve
mass
catalysts,
this
allows
for
use
fewer
saving
greatly
on
cost.
Thus,
single‐atom
catalysts
(SACs)
with
100%
have
been
widely
developed,
which
remarkable
performance
cells.
In
review,
we
will
describe
recent
progress
development
SACs
membrane
electrode
assembly
applications.
First,
introduce
several
routes
synthesis
SACs.
The
mechanism
involved
reactions
also
be
introduced
as
it
highly
determinant
final
activity.
Then,
systematically
summarize
application
Pt
group
metal
(PGM)
nonprecious
(non‐PGM)
This
review
offer
numerous
experiences
developing
potential
industrialized
future.
Nature Communications,
Journal Year:
2023,
Volume and Issue:
14(1)
Published: Nov. 16, 2023
Abstract
Supported
metal
catalysts
often
suffer
from
rapid
degradation
under
harsh
conditions
due
to
material
failure
and
weak
metal-support
interaction.
Here
we
propose
using
reductive
hydrogenated
borophene
in-situ
synthesize
Pt/B/C
with
small
sizes
(~2.5
nm),
high-density
dispersion
(up
80
wt%
Pt
),
promising
stability,
originating
forming
Pt-B
bond
which
are
theoretically
~5×
stronger
than
Pt-C.
Based
on
the
module,
a
series
(~18
kinds)
of
carbon
supported
binary,
ternary,
quaternary,
quinary
intermetallic
compound
nanocatalysts
sub-4
nm
size
synthesized.
Thanks
stable
intermetallics
strong
interaction,
annealing
at
1000
°C
does
not
cause
those
nanoparticles
sintering.
They
also
show
much
improved
activity
stability
in
electrocatalytic
oxygen
reduction
reaction.
Therefore,
by
introducing
boron
chemistry,
derived
multielement
enable
synergy
size,
high
loading,
anchoring,
flexible
compositions,
thus
demonstrating
versatility
toward
efficient
durable
catalysis.
Small,
Journal Year:
2023,
Volume and Issue:
19(23)
Published: March 6, 2023
Noble
metal
doping
can
achieve
an
increase
in
mass
activity
(MA)
without
sacrificing
catalysis
efficiency
and
stability,
so
that
alkaline
hydrogen
evolution
reaction
(HER)
performance
of
the
catalyst
be
optimized
to
maximum
degree.
However,
its
excessively
large
ionic
radius
makes
it
difficult
either
interstitial
or
substitutional
under
mild
conditions.
Herein,
a
hierarchical
nanostructured
electrocatalyst
with
enriched
amorphous/crystalline
interfaces
for
high-efficiency
HER
is
reported,
which
composed
(Co,
Ni)11
(HPO3
)8
(OH)6
homogeneous
structure
ultra-low
doped
Pt
(Pt-a/c-NiHPi).
Benefiting
from
structural
flexibility
amorphous
component,
extremely
low
(0.21
wt.%,
totally
3.31
µg
on
1
cm-2
NF)
are
stably
via
simple
two-phase
hydrothermal
method.
The
DFT
calculations
show
due
strongly
electron
transfer
between
crystalline/amorphous
components
at
interfaces,
electrons
finally
concentrate
toward
Ni
components,
thus
has
near-optimal
energy
barriers
adsorption
H2
O*
H*
.
With
above
benefits,
obtained
exhibits
exceptionally
high
MA
(39.1
mA
µg-1Pt
)
70
mV,
almost
highest
level
among
reported
Pt-based
electrocatalysts
HER.
Industrial Chemistry and Materials,
Journal Year:
2023,
Volume and Issue:
1(4), P. 486 - 500
Published: Jan. 1, 2023
Achieving
single-atom
dispersion
of
metal
active
components
remains
daunting.
Here,
we
summarized
several
key
synthesis
methods
and
applications
high-loading
SACs,
hoping
to
highlight
important
research
areas
for
future
development.
Carbon Energy,
Journal Year:
2023,
Volume and Issue:
5(7)
Published: Jan. 31, 2023
Abstract
As
a
carbon‐free
energy
carrier,
hydrogen
has
become
the
pivot
for
future
clean
energy,
while
efficient
production
and
combustion
still
require
precious
metal‐based
catalysts.
Single‐atom
catalysts
(SACs)
with
high
atomic
utilization
open
up
desirable
perspective
scale
applications
of
metals,
but
general
facile
preparation
various
SACs
remains
challenging.
Herein,
movable
printing
method
been
developed
to
synthesize
SACs,
such
as
Pd,
Pt,
Rh,
Ir,
Ru,
features
highly
dispersed
single
atoms
nitrogen
coordination
have
identified
by
comprehensive
characterizations.
More
importantly,
synthesized
Pt‐
Ru‐based
exhibit
much
higher
activities
than
their
corresponding
nanoparticle
counterparts
oxidation
reaction
evolution
(HER).
In
addition,
Pd‐based
SAC
delivers
an
excellent
activity
photocatalytic
evolution.
Especially
superior
mass
toward
HER,
density
functional
theory
calculations
confirmed
that
adsorption
atom
significant
effect
on
spin
state
electronic
structure
Carbon Energy,
Journal Year:
2023,
Volume and Issue:
5(7)
Published: Feb. 24, 2023
Abstract
A
fuel
cell
is
an
energy
conversion
device
that
can
continuously
input
and
oxidant
into
the
through
electrochemical
reaction
to
release
electrical
energy.
Although
noble
metals
show
good
activity
in
cell‐related
reactions,
their
ever‐increasing
price
considerably
hinders
industrial
application.
Improvement
of
atom
utilization
efficiency
considered
one
most
effective
strategies
improve
mass
catalysts,
this
allows
for
use
fewer
saving
greatly
on
cost.
Thus,
single‐atom
catalysts
(SACs)
with
100%
have
been
widely
developed,
which
remarkable
performance
cells.
In
review,
we
will
describe
recent
progress
development
SACs
membrane
electrode
assembly
applications.
First,
introduce
several
routes
synthesis
SACs.
The
mechanism
involved
reactions
also
be
introduced
as
it
highly
determinant
final
activity.
Then,
systematically
summarize
application
Pt
group
metal
(PGM)
nonprecious
(non‐PGM)
This
review
offer
numerous
experiences
developing
potential
industrialized
future.
