ACS Applied Energy Materials,
Год журнала:
2022,
Номер
5(8), С. 10130 - 10140
Опубликована: Июль 29, 2022
In
this
work,
we
reported
the
rational
design
and
synthesis
of
two
pyrene-4,5,9,10-tetraone
(PT)-linked
conjugated
microporous
polymers
(PT-CMPs)
as
organic
electrode
precursors
in
energy
storage
applications,
which
were
prepared
through
Sonogashira
polycondensation
reaction
ethynyl
pyrene
(Py-T)/tetraphenylethene
(TPE-T)
common
units
with
brominated
tetraene
(PT-Br2)
a
redox-active
unit.
We
employed
microscopic,
spectroscopic,
N2
adsorption/desorption
isotherm
analyses
to
investigate
thermal
stability,
molecular
structure,
porosity
properties
both
newly
obtained
PT-CMPs.
Thermogravimetric
analysis
(TGA)
revealed
that
synthesized
PT-CMPs
feature
moderate
stability.
TheP-PT-CMP
exhibited
high
BET
surface
area
up
300
m2
g–1
total
pore
volume
was
0.34
cm3
g–1,
based
on
sorption
analyses.
Notably,
P-PT-CMP
framework
displayed
very
capacitance
400
F
superior
stability
80%
over
5000
cycles
at
10
A
according
supercapacitor
performance.
addition,
have
evaluated
electrochemical
performance
symmetric
coin
supercapacitor,
showing
great
potential
for
real-life
applications
electrical
(EES).
Journal of Bioresources and Bioproducts,
Год журнала:
2022,
Номер
7(4), С. 245 - 269
Опубликована: Май 20, 2022
With
the
increasing
demand
for
sustainable
energy
storage
systems,
development
of
various
advanced
materials
from
a
renewable
source
is
imminent.
Owing
to
advantages
high
specific
surface
area,
unique
nanostructure,
modifiability,
and
excellent
mechanical
strength,
nanocellulose
integrated
with
other
conductive
materials,
such
as
nanocarbons,
conducting
polymers,
metal
oxides,
has
been
emerged
promising
candidate
green
devices.
Besides,
nanocellulose-derived
carbon
good
electrical
conductivity
tunable
microstructures
can
be
fabricated
via
simple
carbonization,
which
widely
used
supercapacitor
electrode
materials.
Herein,
we
present
comprehensive
review
that
focuses
on
storage,
particularly
supercapacitors.
The
fabrication
strategies
hybrid
are
first
presented
summarized,
followed
by
highlighting
use
natural
constructing
composite
including
two-dimension
film
electrodes,
three-dimension
aerogel
electrodes
In
addition,
possible
limitations
potentials
in
supercapacitors
outlooked.
Chemical Society Reviews,
Год журнала:
2024,
Номер
53(13), С. 7202 - 7298
Опубликована: Янв. 1, 2024
The
growing
global
energy
demand
necessitates
the
development
of
renewable
solutions
to
mitigate
greenhouse
gas
emissions
and
air
pollution.
To
efficiently
utilize
yet
intermittent
sources
such
as
solar
wind
power,
there
is
a
critical
need
for
large-scale
storage
systems
(EES)
with
high
electrochemical
performance.
While
lithium-ion
batteries
(LIBs)
have
been
successfully
used
EES,
surging
price,
coupled
limited
supply
crucial
metals
like
lithium
cobalt,
raised
concerns
about
future
sustainability.
In
this
context,
potassium-ion
(PIBs)
emerged
promising
alternatives
commercial
LIBs.
Leveraging
low
cost
potassium
resources,
abundant
natural
reserves,
similar
chemical
properties
potassium,
PIBs
exhibit
excellent
ion
transport
kinetics
in
electrolytes.
This
review
starts
from
fundamental
principles
structural
regulation
PIBs,
offering
comprehensive
overview
their
current
research
status.
It
covers
cathode
materials,
anode
electrolytes,
binders,
separators,
combining
insights
full
battery
performance,
degradation
mechanisms,
Nanoscale,
Год журнала:
2022,
Номер
14(6), С. 2155 - 2166
Опубликована: Янв. 1, 2022
Metal-organic
frameworks
(MOFs),
an
interesting
class
of
functional
inorganic
materials,
have
recently
emerged
as
suitable
electrode
materials
or
templates/precursors
for
supercapacitors
(SCs).
The
key
in
utilizing
MOF-based
is
to
address
the
low
electronic
conductivity
and
poor
stability
issues.
Therefore,
rational
design
fabrication
self-supported
binder-free
electrodes
considered
most
promising
strategy
these
challenges.
In
this
review,
we
summarize
recent
advances
manufacture
nanostructures
their
use
binderless
SCs,
especially
over
last
five
years.
synthesis
strategies
constructing
pristine
MOFs,
MOF
composites
derivative
arrays
are
overviewed.
By
highlighting
advantages
challenges
each
hope
that
review
will
provide
some
insights
into
promote
future
development
highly
exciting
field.
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(17)
Опубликована: Март 1, 2023
Carbonaceous
materials
are
promising
anodes
for
practical
potassium-ion
batteries,
but
fail
to
meet
the
requirements
durability
and
high
capacities
at
low
potentials.
Herein,
we
constructed
a
durable
carbon
anode
high-energy-density
K-ion
full
cells
by
preferential
pyrolysis
strategy.
Utilizing
S
N
volatilization
from
π-π
stacked
supermolecule,
process
introduces
low-potential
active
sites
of
sp2
hybridized
vacancies,
endowing
"vacancy-adsorption/intercalation"
mechanism.
The
as-prepared
exhibits
capacity
384.2
mAh
g-1
(90
%
locates
below
1
V
vs.
K/K+
),
which
contributes
energy
density
163
Wh
kg-1
battery.
Moreover,
abundant
vacancies
alleviate
volume
variation,
boosting
cycling
stability
over
14
000
cycles
(8400
h).
Our
work
provides
new
synthesis
approach
with
densities.
Energy & Environmental Science,
Год журнала:
2023,
Номер
16(4), С. 1540 - 1547
Опубликована: Янв. 1, 2023
A
single-atomic
sulfur
anode,
constructed
by
∼32
wt%
uniformly
incorporated
into
the
carbon
lattice
of
hollow
nanospheres,
demonstrates
an
outstanding
combination
capacity,
cyclability,
and
rate
for
potassium
storage.
Advanced Energy Materials,
Год журнала:
2023,
Номер
14(4)
Опубликована: Дек. 2, 2023
Abstract
Hard
carbon
stands
out
as
one
of
the
premier
anodes
for
potassium‐ion
batteries
(PIBs),
celebrated
its
cost‐effectiveness,
natural
abundance,
and
high
yield.
Yet,
performance
in
PIBs
remains
subpar
due
to
slow
kinetics,
a
result
large
ionic
radius
K‐ions.
Herein,
unique
lamellar
N/O/S‐tri‐doped
hard
(NOSHC)
has
been
developed
at
an
impressively
low
pyrolysis
temperature
500°C,
showcasing
distinct
“slope‐dominated”
characteristic.
NOSHC
delivers
superior
rate
with
dominant
surface‐driven
capacitive
contribution
(71.6%
scan
0.5
mV
s
−1
),
maintaining
robust
reversible
specific
capacity
125
mAh
g
(half
peak)
even
5
A
.
Its
stability
is
equally
commendable,
it
sustains
substantial
265
after
100
cycles
0.1
retains
210
post‐1000
1
Moreover,
undergoes
continuous
activation
via
potassiation/depotassiation
during
cycling.
Rich
heteroatom
doping
introduces
plethora
defects
vacancies,
creating
abundant
active
sites.
The
structure,
featuring
minimal
pores,
optimizes
K‐ions
transport
by
shortening
diffusion
length.
This
study
unveils
potential
enhancing
harnessing
carbonization
approach.
