Small,
Journal Year:
2022,
Volume and Issue:
18(43)
Published: Feb. 25, 2022
Abstract
As
one
of
the
most
competitive
candidates
for
large‐scale
energy
storage,
zinc–air
batteries
(ZABs)
have
attracted
great
attention
due
to
their
high
theoretical
specific
density,
low
toxicity,
abundance,
and
safety.
It
is
highly
desirable
but
still
remains
a
huge
challenge,
however,
achieve
cheap
efficient
electrocatalysts
promote
commercialization.
Recently,
Fe‐based
single‐atom
dual‐atom
catalysts
(SACs
DACs,
respectively)
emerged
as
powerful
ZABs
derived
from
maximum
utilization
atoms,
excellent
catalytic
performance,
price.
In
this
review,
some
fundamental
concepts
in
field
are
presented
recent
progress
on
reported
SACs
DACs
summarized,
mainly
focusing
relationship
between
structure
performance
at
atomic
level,
with
aim
providing
helpful
guidelines
future
rational
designs
atomically
dispersed
active
sites.
Finally,
advantages
challenges
also
discussed.
Advanced Energy Materials,
Journal Year:
2021,
Volume and Issue:
11(17)
Published: March 14, 2021
Abstract
Compositional
and
structural
engineering
of
metal‐metalloid
materials
can
boost
their
electrocatalytic
performance.
Herein,
a
highly
efficient
stable
system
for
the
oxygen
reduction
reaction
is
obtained
by
creating
heterointerfaces
between
N‐doped
carbon
cobalt
boride
nanosheets.
Furthermore,
detailed
investigation
on
effect
annealing
temperature
as
well
amount
nitrogen
sources
conducted
to
tune
The
best
electrocatalyst
among
prepared
found
have
an
onset
potential
1.05
V
half‐wave
0.94
V,
which
are
40
72
mV
positive
in
comparison
commercial
Pt/C,
respectively.
Finally,
zinc–air
battery
also
assembled
using
catalyst.
ACS Catalysis,
Journal Year:
2021,
Volume and Issue:
11(23), P. 14338 - 14351
Published: Nov. 12, 2021
The
development
of
high-performance
electrocatalysts
is
a
highly
efficient
strategy
to
optimize
the
sluggish
kinetic
property
oxygen
evolution
reaction
(OER).
Herein,
we
synthesize
kind
nickel
foam
(NF)-supported
electrocatalyst
composed
one-dimensional
Co3O4
nanowire
as
core
and
two-dimensional
NiFe-LDH
nanosheet
shell
(denoted
NiFe-60/Co3O4@NF).
Fluorine
introduced
into
precursor
Co(OH)F
Co3O4,
which
results
in
improved
thermal
stability
significantly
increased
regularly
distributed
vacancies,
while
electrochemically
deposited
nanosheets
possess
crystalline/amorphous
hybrid
structure.
As
result,
hetero-interface
mainly
constituting
Ni
species
from
contributes
interaction
between
Co
Fe
facilitates
electron
transfer.
Simultaneously,
vacancies
coordinatively
unsaturated
amorphous
area
also
determined,
finally
completing
backtracking.
Benefiting
these
factors,
only
low
overpotentials
221
257
mV
are
required
deliver
current
densities
100
500
mA
cm–2,
respectively,
with
quite
small
Tafel
slope
34.6
dec–1
during
OER
for
well-designed
NiFe-60/Co3O4@NF
electrocatalyst.
Advanced Functional Materials,
Journal Year:
2021,
Volume and Issue:
31(42)
Published: July 20, 2021
Abstract
The
great
interest
in
rechargeable
Zn–air
batteries
(ZABs)
arouses
extensive
research
on
low‐cost,
high‐active,
and
durable
bifunctional
electrocatalysts
to
boost
the
sluggish
oxygen
reduction
reaction
(ORR)
evolution
(OER).
It
remains
a
challenge
simultaneously
host
high‐active
independent
ORR
OER
sites
single
catalyst.
Herein
dual‐phasic
carbon
nanoarchitecture
consisting
of
single‐atom
phase
for
nanosized
is
proposed.
Specifically,
Co
atoms
supported
nanotubes
(single‐atom
phase)
encapsulated
zeolitic‐imidazole‐framework‐derived
polyhedron
(nanosized
are
integrated
together
via
nanotube
bridges.
obtained
catalyst
shows
small
overpotential
difference
0.74
V
between
potential
at
10
mA
cm
−2
half‐wave
potential.
ZAB
based
demonstrates
large
power
density
172
mW
.
Furthermore,
it
charge‐discharge
gap
0.51
5
outstanding
discharge‐charge
cycling
durability.
This
study
provides
feasible
design
concept
achieve
multifunctional
catalysts
promotes
development
ZABs.
Advanced Materials,
Journal Year:
2021,
Volume and Issue:
34(5)
Published: Oct. 22, 2021
Next-generation
batteries
based
on
conversion
reactions,
including
aqueous
metal-air
batteries,
nonaqueous
alkali
metal-O2
and
-CO2
metal-chalcogen
metal-ion
have
attracted
great
interest.
However,
their
use
is
restricted
by
inefficient
reversible
of
active
agents.
Developing
bifunctional
catalysts
to
accelerate
the
reaction
kinetics
in
both
discharge
charge
processes
urgently
needed.
Graphene-,
or
graphene-like
carbon-supported
atomically
dispersed
metal
(G-ADMCs)
been
demonstrated
show
excellent
activity
various
electrocatalytic
making
them
promising
candidates.
Different
from
G-ADMCs
for
catalysis,
which
only
require
high
one
direction,
rechargeable
should
provide
discharging
charging.
This
review
provides
guidance
design
fabrication
next-generation
reactions.
The
key
challenges
that
prevent
conversion,
origin
G-ADMCs,
current
principles
highly
analyzed
highlighted
each
conversion-type
battery.
Finally,
a
summary
outlook
development
G-ADMC
materials
with
energy
density
efficiency
are
given.
Nature Communications,
Journal Year:
2021,
Volume and Issue:
12(1)
Published: Aug. 10, 2021
Abstract
Selective
cleavage
of
C-C
bonds
is
very
important
in
organic
chemistry,
but
remains
challenging
because
their
inert
chemical
nature.
Herein,
we
report
that
Zn/NC-X
catalysts,
which
Zn
2+
coordinate
with
N
species
on
microporous
N-doped
carbon
(NC)
and
X
denotes
the
pyrolysis
temperature,
can
effectively
catalyze
aerobic
oxidative
C(CO)-C
quantitatively
convert
acetophenone
to
methyl
benzoate
a
yield
99%
at
100
°C.
The
Zn/NC-950
be
applied
for
wide
scope
derivatives
as
well
more
alkyl
ketones.
Detail
mechanistic
investigations
reveal
catalytic
performance
attributed
coordination
between
change
electronic
state
metal,
synergetic
effect
single
sites
surrounding
atoms,
structure
high
surface
area
structural
defects
NC.
InfoMat,
Journal Year:
2021,
Volume and Issue:
4(5)
Published: Dec. 13, 2021
Abstract
Benefiting
from
the
advantageous
features
of
high
safety,
abundant
reserves,
low
cost,
and
energy
density,
aqueous
Zn‐based
rechargeable
batteries
(AZBs)
have
received
extensive
attention
as
promising
candidates
for
storage.
To
achieve
high‐performance
AZBs
with
reversibility
great
efforts
been
devoted
to
overcoming
their
drawbacks
by
focusing
on
modification
electrode
materials
electrolytes.
Based
different
cathode
electrolytes,
development
redox
mechanisms
are
discussed
in
this
review,
including
insertion/extraction
chemistries
(e.g.,
Zn
2+
,
alkali
metal
ion,
H
+
NH
4
so
forth)
dissolution/deposition
reactions
MnO
2
/Mn
),
couples
flow
I
3
−
/3I
Br
/Br
forth),
oxygen
electrochemistry
O
/OH
/O
2−
carbon
dioxide
CO
/CO,
/HCOOH).
In
particular,
basic
reaction
mechanisms,
issues
electrode,
well
design
strategies
systematically
reviewed.
Finally,
remaining
challenges
faced
summarized,
perspectives
further
investigations
proposed.