Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(11)
Published: Jan. 10, 2024
Hard
carbon
(HC)
as
a
potential
candidate
anode
for
sodium-ion
batteries
(SIBs)
suffers
from
unstable
solid
electrolyte
interphase
(SEI)
and
low
initial
Coulombic
efficiency
(ICE),
which
limits
its
commercial
applications
urgently
requires
the
emergence
of
new
strategy.
Herein,
an
organic
molecule
with
two
sodium
ions,
disodium
phthalate
(DP),
was
successfully
engineered
on
HC
surface
(DP-HC)
to
replenish
loss
formation.
A
stabilized
ultrathin
(≈7.4
nm)
SEI
constructed
DP-HC
surface,
proved
be
simultaneously
suitable
in
both
ester
ether
electrolytes.
Compared
pure
(60.8
%),
as-designed
exhibited
high
ICE
>96.3
%
NaPF
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(40)
Published: May 20, 2024
Abstract
Hard
carbon
(HC)
materials
with
rich
closed
pore
structures
and
nano‐scaled
soft
coating
layer
have
emerged
as
promising
anode
in
sodium‐ion
batteries
(SIBs).
However,
it
still
remains
a
tremendous
challenge
to
precisely
regulate
thicknesses
for
achieving
excellent
electrochemical
performance
SIBs
at
low‐voltage
platforms.
Herein,
PCHC‐10
abundant
suitable‐sized
size
(0.45
nm)
has
been
accurately
designed
by
chemical
crosslink
reaction
between
the
pre‐oxidized
phenolic
resin
small
addition
of
pitch
form
ester‐based
bond.
As
anode,
delivered
large
reversible
capacity
359.8
mAh
g
−1
within
0.001–2.5
V,
high
242.8
low
voltage
platforms
(≤0.15
V).
Besides,
exhibits
91.4%
retention
100
cycles,
Na
3
V
2
(PO
4
)
//PCHC‐10
full
cell
superior
rate
energy
density
231.2
Wh
kg
.
Furthermore,
detailed
storage
behaviors
theoretical
calculations
revealed
that
HC
owning
pore‐size
0.45
nm
strongest
+
abilities
This
work
presents
novel
insight
constructing
boost
capability
Cell Reports Physical Science,
Journal Year:
2024,
Volume and Issue:
5(3), P. 101851 - 101851
Published: Feb. 29, 2024
Due
to
its
overall
performance,
hard
carbon
(HC)
is
a
promising
anode
for
rechargeable
lithium-,
sodium-,
and
potassium-ion
batteries
(LIBs,
NIBs,
KIBs).
The
microcrystalline
structure
morphology
of
HCs
facilitates
the
alkali
metal
-ion
uptake
fast
ion
intercalation
deintercalation
throughout
pores
with
low-potential
properties.
However,
large-scale
industrial
application
still
lagging
because
first-cycle
reversible
capacity,
which
results
in
low
initial
Coulombic
efficiency
(ICE)
voltage
hysteresis.
This
review
focuses
on
fundamental
mechanism
as
metal-ion
batteries,
current
issues
being
discussed.
includes
formation
solid
electrolyte
interphase
during
first
cycle
ICE,
safety
concerns,
improved
performances,
are
vital
practical
applicability.
state-of-the-art
HC
anodes
discussed
here
recent
literature.
Furthermore,
challenges
corresponding
effective
strategies
overcome
difficulties
related
commercialization
battery
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(11)
Published: Jan. 10, 2024
Hard
carbon
(HC)
as
a
potential
candidate
anode
for
sodium-ion
batteries
(SIBs)
suffers
from
unstable
solid
electrolyte
interphase
(SEI)
and
low
initial
Coulombic
efficiency
(ICE),
which
limits
its
commercial
applications
urgently
requires
the
emergence
of
new
strategy.
Herein,
an
organic
molecule
with
two
sodium
ions,
disodium
phthalate
(DP),
was
successfully
engineered
on
HC
surface
(DP-HC)
to
replenish
loss
formation.
A
stabilized
ultrathin
(≈7.4
nm)
SEI
constructed
DP-HC
surface,
proved
be
simultaneously
suitable
in
both
ester
ether
electrolytes.
Compared
pure
(60.8
%),
as-designed
exhibited
high
ICE
>96.3
%
NaPF
