Materials,
Journal Year:
2025,
Volume and Issue:
18(10), P. 2248 - 2248
Published: May 13, 2025
Sodium-ion
batteries
(SIBs)
have
emerged
as
a
viable
alternative
to
lithium-ion
technologies,
with
carbon-based
anodes
playing
pivotal
role
in
addressing
key
challenges
of
sodium
storage.
This
review
systematically
examines
hard
carbon
the
premier
anode
material,
elucidating
its
dual
storage
mechanisms:
(1)
sloping
capacity
(2.0–0.1
V
vs.
Na+/Na)
from
surface/defect
adsorption
and
(2)
plateau
(<0.1
V)
via
closed-pore
filling
pseudo-graphitic
intercalation.
Through
critical
analysis
recent
advancements,
we
establish
that
optimized
architectures
delivering
300–400
mAh/g
require
precise
coordination
domains
(d002
=
0.36–0.40
nm)
<1
nm
closed
pores.
ultimately
provides
design
blueprint
for
next-generation
anodes,
proposing
three
research
frontiers:
machine
learning-guided
microstructure
optimization,
dynamic
sodiation/desodiation
control
sub
pores,
(3)
scalable
manufacturing
heteroatom-doped
engineered
domains.
These
advancements
position
enablers
high-performance,
cost-effective
SIBs
grid-scale
energy
applications.
Journal of the American Chemical Society,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 16, 2025
Sodium-ion
batteries
(SIBs)
have
developed
rapidly
in
recent
years,
confronting
low
capacity
and
poor
cycling
stability
issues
for
anode
material.
Herein,
triazole-substituted
graphdiyne
(TzlGDY)
was
designed
to
tune
the
sodium-ion
insertion
sequence,
an
effective
diyne-radical
Na-storage
mechanism
discovered.
The
distinctive
diyne-ditriazole
architecture
actualizes
a
preferential
Na+-N
complexation,
then
π-bond
homolysis
of
diyne
is
induced
by
Na+
generate
two
radicals
at
end
carbons
diyne,
thereby
capture
additional
Na+-radical
coupling.
This
complexation
followed
coupling
more
effectively
enhances
compared
with
reported
cation-π
mechanism.
Furthermore,
other
ditriazole-N
atoms
chelate
Na+.
triazole-filled
nanopores
full-carbon
backbone
TzlGDY
stabilize
enhance
Na+-transport
kinetics.
As
result,
TzlGDY's
presented
almost
no
decay
over
12,000
cycles
5
A
g-1
final
251.7
mAh
g-1.
Moreover,
TzlGDY||NVP
full
cell
delivered
high
specific
114
0.2C
retention
81.8%
average
CE
99.6%
after
150
cycles.
Our
results
demonstrate
new
concept
energy
storage
open
up
route
efficiently
regulating
materials
SIBs.
Nano Letters,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 16, 2025
Achieving
the
full
potential
of
hard
carbon
(HC)
for
sodium
storage
requires
a
deep
understanding
its
complex
porous
structure
as
well
charge
mechanism.
While
contribution
deposition
within
HC
pores
to
overall
capacity
is
recognized,
detailed
visualization
and
mechanistic
this
process
remain
challenging.
This
study
leverages
advanced
electron
microscopy
techniques
probe
intricate
pore
architecture
directly
visualize
pores.
By
employing
an
material
(PHC-1)
with
rich
closed
platform
material,
tomography
utilized
reconstruct
PHC-1,
providing
quantitative
insights
into
porosity,
size,
structure.
Low-dose
visualizes
metastable
clusters
filling
up
during
sodiation.
Complementary
in-situ
ex-situ
characterizations
further
elucidate
synergistic
adsorption-intercalation-filling
mechanism
PHC-1.
provides
significant
structure-property
correlation
HC.
Materials,
Journal Year:
2025,
Volume and Issue:
18(10), P. 2248 - 2248
Published: May 13, 2025
Sodium-ion
batteries
(SIBs)
have
emerged
as
a
viable
alternative
to
lithium-ion
technologies,
with
carbon-based
anodes
playing
pivotal
role
in
addressing
key
challenges
of
sodium
storage.
This
review
systematically
examines
hard
carbon
the
premier
anode
material,
elucidating
its
dual
storage
mechanisms:
(1)
sloping
capacity
(2.0–0.1
V
vs.
Na+/Na)
from
surface/defect
adsorption
and
(2)
plateau
(<0.1
V)
via
closed-pore
filling
pseudo-graphitic
intercalation.
Through
critical
analysis
recent
advancements,
we
establish
that
optimized
architectures
delivering
300–400
mAh/g
require
precise
coordination
domains
(d002
=
0.36–0.40
nm)
<1
nm
closed
pores.
ultimately
provides
design
blueprint
for
next-generation
anodes,
proposing
three
research
frontiers:
machine
learning-guided
microstructure
optimization,
dynamic
sodiation/desodiation
control
sub
pores,
(3)
scalable
manufacturing
heteroatom-doped
engineered
domains.
These
advancements
position
enablers
high-performance,
cost-effective
SIBs
grid-scale
energy
applications.
