Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 17, 2024
Abstract
Metal
single‐atom
catalysts
(SACs)
are
extensively
investigated
to
accelerate
the
sulfur
redox
kinetics
in
room‐temperature
sodium─sulfur
(Na─S)
batteries.
Nevertheless,
influence
of
structure
symmetry
SACs
center
on
electrocatalytic
mechanism
and
precise
pathway
which
active
sites
facilitate
sodium
polysulfides
(Na
2
S
n
)
conversion
remain
unknown.
To
enable
controlled
construction
highly
configuration,
herein,
Zn
with
an
asymmetrical
Zn─N
3
O
configuration
designed
for
conversion.
Both
theoretical
experimental
explorations
reveal
that
displays
higher
activity
than
4
center.
The
N/O
co‐coordination
induces
localized
charge
at
center,
strengthens
d‐p
hybridization
Na
stretches
Na─S
bond
length
,
thus
accelerating
reaction
kinetics.
Consequently,
as‐assembled
batteries
achieve
a
high
capacity
1016
mAh
g
−1
1.0
C
decay
0.0186%
per
cycle
over
1000
cycles.
This
work
uncovers
subtle
relationship
between
species
local
coordination
environment
SACs,
offers
guidance
design
efficient
different
catalysis
applications.
Energy Materials,
Journal Year:
2025,
Volume and Issue:
5(8)
Published: April 21, 2025
Room-temperature
sodium-sulfur
(RT
Na-S)
batteries
are
potential
candidates
for
next-generation
energy
storage
systems
because
of
low-cost
resources,
high
theoretical
capacity,
and
density.
However,
their
commercialization
is
hindered
by
the
inherent
shuttle
effect,
insulation
sulfur,
slow
catalytic
conversion.
This
study
proposes
a
novel
approach
involving
design
C/CoFe
alloy
catalyst
coupled
with
Ti3C2Tx
MXene
substrate
(C/CoFe-MXene)
as
three-dimensional
porous
conductive
sulfur
host.
Polysulfide
adsorption/catalytic
experiments
density
functional
theory
calculation
confirmed
excellent
affinity
strong
conversion
ability
C/CoFe-MXene
composite
polysulfides.
The
heterostructure
formed
between
CoFe
promotes
Na+
transport
accelerates
reaction
kinetics
species.
Consequently,
assembled
RT
Na-S
host
(2.0
mg
cm-2)
deliver
initial
specific
capacity
572
mAh
g-1
at
1
C.
Even
5
C,
battery
achieves
ultralong-term
cycling
over
5,400
cycles
retention
rate
61.9%,
corresponding
to
fading
0.0089%
per
cycle,
demonstrating
outstanding
high-rate
tolerance.
work
provides
new
insights
into
preparation
cathodes
surface
area
activity
using
catalysts
loaded
on
substrates
in
batteries.
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 16, 2025
Abstract
The
low
cost
and
high
energy
density
characteristics
of
room‐temperature
sodium‐sulfur
(RT
Na‐S)
batteries
remarkably
promote
the
development
sustainable
large‐scale
energy‐storage
systems.
However,
there
are
serious
problems
with
shuttle
effect
slow
conversion
kinetics
caused
by
polysulfide
dissolution
in
RT
Na‐S
batteries,
which
can
lead
to
decreased
coulombic
efficiency,
rapid
capacity
degradation,
poor
rate
performance,
hindering
practical
application
batteries.
Recently,
numerous
multimodal
approaches
have
been
attempted
address
these
issues,
thereby
promoting
cycling
stability
raising
a
higher
level.
is
still
lack
comprehensive
systematic
summary
catalyst
design
based
on
cooperative
catalysis
principle.
In
this
review,
advantages,
operation
mechanisms,
main
challenges
first
introduced.
After
that,
latest
progress
catalysts
elaborately
summarized,
exploring
corresponding
work
mechanisms
principles
Finally,
future
research
directions
for
developing
high‐performance
presented.
Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
136(51)
Published: Aug. 29, 2024
Abstract
The
practical
application
of
room‐temperature
sodium‐sulfur
(RT
Na−S)
batteries
is
severely
hindered
by
inhomogeneous
sodium
deposition
and
notorious
polysulfides
(NaPSs)
shuttling.
Herein,
novel
thiotellurate
(Na
2
TeS
3
)
interfaces
are
constructed
both
on
the
cathode
anode
for
Na−S
to
simultaneously
address
Na
dendritic
growth
On
side,
a
heterostructural
sulfide/sodium
telluride
embedded
in
carbon
matrix
S/Na
Te@C)
rationally
designed
through
facile
carbothermal
reaction,
where
interface
will
be
situ
chemically
obtained.
Such
an
provides
abundant
electron/ion
diffusion
channels
ensures
rich
catalytic
surfaces
toward
redox,
which
could
significantly
improve
utilization
active
material
alleviate
shuttling
cathode.
inevitable
formation
soluble
polytellurosulfides
species
migrate
surface,
finally
constructing
compact
smooth
solid‐electrolyte
interphase
(SEI)
layer.
electrochemical
formed
can
enhance
ionic
transport
stabilize
deposition,
thus
realizing
dendrite‐free
Na‐metal
plating/stripping.
Benefitting
from
these
advantages,
anode‐free
cell
fabricated
with
Te@C
exhibits
ultrahigh
initial
discharge
capacity
634
mAh
g
−1
at
0.1
C,
pave
new
path
design
high‐performance
cathodes
RT
batteries.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 17, 2024
Abstract
Metal
single‐atom
catalysts
(SACs)
are
extensively
investigated
to
accelerate
the
sulfur
redox
kinetics
in
room‐temperature
sodium─sulfur
(Na─S)
batteries.
Nevertheless,
influence
of
structure
symmetry
SACs
center
on
electrocatalytic
mechanism
and
precise
pathway
which
active
sites
facilitate
sodium
polysulfides
(Na
2
S
n
)
conversion
remain
unknown.
To
enable
controlled
construction
highly
configuration,
herein,
Zn
with
an
asymmetrical
Zn─N
3
O
configuration
designed
for
conversion.
Both
theoretical
experimental
explorations
reveal
that
displays
higher
activity
than
4
center.
The
N/O
co‐coordination
induces
localized
charge
at
center,
strengthens
d‐p
hybridization
Na
stretches
Na─S
bond
length
,
thus
accelerating
reaction
kinetics.
Consequently,
as‐assembled
batteries
achieve
a
high
capacity
1016
mAh
g
−1
1.0
C
decay
0.0186%
per
cycle
over
1000
cycles.
This
work
uncovers
subtle
relationship
between
species
local
coordination
environment
SACs,
offers
guidance
design
efficient
different
catalysis
applications.
