Advanced Functional Materials,
Год журнала:
2024,
Номер
34(30)
Опубликована: Апрель 9, 2024
Abstract
The
missions
in
extreme
environments
such
as
the
moon,
Arctic/Antarctic,
and
plateau
require
operation
of
batteries
at
low
temperatures
even
below
freezing
point
water.
Herein,
it
is
reported
that
compressively
stressed
Co
single
atoms
exhibit
enhanced
oxygen
reduction
reaction
(ORR)
activity
enable
effective
zinc–air
battery
a
subzero
temperature.
compressive
strain
generated
by
depositing
on
highly
arced
carbon
layers
with
ultra‐small
curvature
radii
≈2
nm.
locally
redistributes
electron
fillings
d
orbitals
different
spatial
orientations,
thereby
strengthening
adsorption
active
intermediates
enhancing
toward
ORR.
As
expected,
outperform
flat
support
without
terms
kinetic
current
density
(31.09
mA
cm
−2
vs
0.35
)
0.85
V
during
integration
catalyst
into
Zn–air
generates
superior
power
54.8
mW
than
commercial
Pt/C
counterpart
(24.1
−40
°C.
Angewandte Chemie International Edition,
Год журнала:
2022,
Номер
61(38)
Опубликована: Авг. 2, 2022
Electrochemical
production
of
hydrogen
peroxide
(H2
O2
)
from
on
single-atom
catalysts
has
attracted
great
attention,
yet
the
quest
for
robust
is
driven
by
achieving
>90
%
Faradaic
efficiency
(FE)
under
industrial-relevant
current
densities
(>100
mA
cm-2
).
Herein
we
synthesize
a
catalyst
that
contains
single
nickel
site
coordinated
four
nitrogen
and
two
oxygen
atoms
(i.e.,
N4
Ni1
via
involving
carboxyl
functionalized
multiwall
carbon
nanotubes
as
substrate
to
provide
extra
O
coordination
regular
NiN4
site.
It
cathodic
energy
approximately
82
H2
FE
around
96
at
200
density,
outperforming
reported
electrosynthesis.
Angewandte Chemie International Edition,
Год журнала:
2022,
Номер
61(35)
Опубликована: Июнь 14, 2022
Abstract
The
global
utilization
of
H
2
O
is
currently
around
4
million
tons
per
year
and
expected
to
continue
increase
in
the
future.
mainly
produced
by
anthraquinone
process,
which
involves
multiple
steps
terms
alkylanthraquinone
hydrogenation/oxidation
organic
solvents
liquid–liquid
extraction
.
energy‐intensive
environmentally
unfriendly
process
does
not
meet
requirements
sustainable
low‐carbon
development.
electrocatalytic
two‐electron
(2
e
−
)
oxygen
reduction
reaction
(ORR)
driven
renewable
energy
(e.g.
solar
wind
power)
offers
a
more
economical,
low‐carbon,
greener
route
produce
However,
continuous
decentralized
electrosynthesis
still
poses
many
challenges.
This
Minireview
first
summarizes
development
devices
for
electrosynthesis,
then
introduces
each
component,
assembly
some
optimization
strategies.
Advanced Functional Materials,
Год журнала:
2023,
Номер
33(17)
Опубликована: Янв. 31, 2023
Abstract
Atomically
dispersed
3D
transitional
metal
active
sites
with
nitrogen
coordination
anchored
on
carbon
support
have
emerged
as
a
kind
of
promising
electrocatalyst
toward
oxygen
reduction
reaction
(ORR)
in
the
field
fuel
cells
and
metal–air
cells.
However,
it
is
still
challenge
to
accurately
modulate
structure
single‐atom
sites,
especially
first‐shell
coordination,
well
identify
relationship
between
geometric/electronic
ORR
performance.
Herein,
carbon‐supported
nickel
catalyst
fabricated
boron
dual
(denoted
Ni‐B/N‐C).
The
hard
X‐ray
absorption
spectrum
result
reveals
that
atomically
Ni
are
coordinated
one
B
atom
three
N
atoms
first
shell
Ni‐B
1
3
).
Ni‐B/N‐C
exhibits
half‐wave
potential
(
E
1/2
)
0.87
V
versus
RHE,
along
distinguished
long‐term
durability
alkaline
media,
which
superior
commercial
Pt/C.
Density
functional
theory
calculations
indicate
more
favorable
for
adsorption
intermediates
relative
Ni‐N
4
,
leading
thermodynamic
barrier
acceleration
kinetics,
accounts
increased
intrinsic
activity.
Advanced Functional Materials,
Год журнала:
2023,
Номер
33(15)
Опубликована: Фев. 28, 2023
Abstract
Oxygen
reduction
reaction
via
the
two‐electron
route
(2e
−
ORR)
provides
a
green
method
for
direct
production
of
hydrogen
peroxide
(H
2
O
)
along
with
in
situ
utilization.
The
effective
catalysts
high
ORR
activity,
2e
selectivity,
and
stability
are
essential
application
this
technology.
Single‐atom
(SACs)
have
attracted
intensively
attention
H
electrosynthesis
owing
to
unique
geometric
electronic
configurations.
In
review,
mechanism
theoretical
predictions
over
SACs
first
introduced.
Then,
recent
advances
various
documented.
And
correlation
between
central
atom,
coordination
atoms,
environment
corresponding
electrocatalytic
performance
including
emphatically
analyzed
summarized.
Finally,
major
challenges
opportunities
regarding
future
design
pointed
out.
Chemical Science,
Год журнала:
2024,
Номер
15(14), С. 5082 - 5112
Опубликована: Янв. 1, 2024
This
review
systematically
introduces
how
to
regulate
the
electronic
structure
and
geometric
configuration
of
atomic
catalysts
achieve
high-efficiency
electrocatalysis
performances
by
analyzing
detailed
electrocatalytic
applications
mechanisms.
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(22)
Опубликована: Март 9, 2023
Efficient
molecular
oxygen
activation
(MOA)
is
the
key
to
environmentally
friendly
catalytic
oxidation
reactions.
In
last
decade,
single-atomic-site
catalysts
(SASCs)
with
nearly
100
%
atomic
utilization
and
unique
electronic
structure
have
been
widely
investigated
for
MOA.
However,
single
active
site
makes
effect
unsatisfactory
difficult
deal
complex
Recently,
dual-atomic-site
(DASCs)
provided
a
new
idea
effective
of
(O2
)
due
more
diverse
sites
synergetic
interactions
among
adjacent
atoms.
this
review,
we
systematically
summarized
recent
research
progress
DASCs
MOA
in
heterogeneous
thermo-
electrocatalysis.
Finally,
look
forward
challenges
application
prospects
construction
Nano-Micro Letters,
Год журнала:
2023,
Номер
15(1)
Опубликована: Апрель 7, 2023
Abstract
Electrochemical
synthesis
of
H
2
O
via
a
selective
two-electron
oxygen
reduction
reaction
has
emerged
as
an
attractive
alternative
to
the
current
energy-consuming
anthraquinone
process.
Herein,
progress
on
electrocatalysts
for
generation,
including
noble
metal,
transition
metal-based,
and
carbon-based
materials,
is
summarized.
At
first,
design
strategies
employed
obtain
with
high
electroactivity
selectivity
are
highlighted.
Then,
critical
roles
geometry
electrodes
type
reactor
in
striking
balance
boost
rate
systematically
discussed.
After
that,
potential
strategy
combine
complementary
properties
catalysts
optimal
overall
yield
illustrated.
Finally,
remaining
challenges
promising
opportunities
high-efficient
electrochemical
production
highlighted
future
studies.
