Frontiers in Energy Research,
Journal Year:
2023,
Volume and Issue:
11
Published: Nov. 20, 2023
Large-scale
energy
storage
systems
(ESSs)
that
can
react
quickly
to
fluctuations
and
store
excess
are
required
increase
the
reliability
of
electricity
grids
rely
heavily
on
renewable
sources
(RESs).
Hybrid
systems,
which
combine
different
technologies
such
as
batteries
supercapacitors,
becoming
increasingly
popular
because
no
single
technology
satisfy
all
requirements.
In
this
study,
a
supercapacitor
is
used
stabilize
shifting
bursts
power,
while
battery
gradually
fluctuating
power
flow.
This
paper
proposes
robust
controller
for
managing
direct
current
(DC)
bus
voltage
optimize
performance
ESS.
The
proposed
combines
fractional-order
proportional
integral
(FOPI)
with
classical
PI
first
time
in
DC
microgrid
area.
hybrid
(FOPI-PI)
achieves
an
outstanding
superior
transient
dynamic
response
specifications
compared
other
traditional
controllers.
parameters
suggested
incorporated
self-adaptive
bonobo
optimizer
(SaBO)
determine
optimal
values.
Furthermore,
various
optimization
techniques
applied
model
SaBO’s
output
outperforms
by
minimizing
best
objective
function.
addition,
study
has
utilized
novel
management
strategy
includes
two
closed
loops
both
supercapacitors.
By
using
method,
batteries’
lifespans
may
be
increased
still
retaining
system
performance.
implemented
MATLAB/Simulink
2022b,
outcomes
reported
several
case
studies.
findings
demonstrate
control
technique
remarkably
improves
response,
duration,
overshoot/undershoot,
settling
time.
SaBO
effective
maintaining
under
load
solar
variation.
Carbon Energy,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 27, 2025
ABSTRACT
While
silicon/carbon
(Si/C)
is
considered
one
of
the
most
promising
anode
materials
for
next
generation
high‐energy
lithium‐ion
batteries
(LIBs),
industrialization
Si/C
anodes
hampered
by
high‐cost
and
low
product
yield.
Herein,
a
high‐yield
strategy
developed
in
which
photovoltaic
waste
silicon
converted
to
cost‐effective
graphitic
composites
(G‐Si@C)
LIBs.
The
introduction
binder
improves
dispersion
compatibility
graphite,
enhances
particle
sphericity,
significantly
reduces
loss
rate
spray
prilling
process
(from
about
25%
5%).
As
an
LIB
anode,
fabricated
G‐Si@C
exhibit
capacity
605
mAh
g
−1
after
1200
cycles.
cost
manufacturing
has
been
reduced
approximately
$7.47
kg
,
close
that
commercial
graphite
($5.0
),
lower
than
(ca.
$20.74
).
Moreover,
material
provides
81.0
Ah/$
capacity,
exceeds
current
best
(70.0
Ah/$)
(48.2
Ah/$).
successful
implementation
this
pathway
will
promote
high‐energy‐density
materials.
Physica Scripta,
Journal Year:
2023,
Volume and Issue:
99(3), P. 035922 - 035922
Published: Dec. 19, 2023
Abstract
This
study
examined
the
structural,
electronic,
optical,
mechanical,
and
thermal
properties
of
K-based
halide
perovskites
KGeX
3
(X
=
Cl,
Br).
All
calculations
have
been
carried
out
using
DFT-based
CASTEP
simulation
package
with
an
ultra-soft
pseudo-potential
plane
wave
PBE-GGA
technique.
Both
studied
perovskite
compounds
are
stable
in
terms
mechanical
stability.
The
calculated
electronic
indicate
that
both
materials
a
semiconducting
behavior
direct
band
gap.
gap
value
is
0.92
0.62
eV
for
KGeCl
KGeBr
,
respectively.
analysis
reveals
notable
reduction
bandgap
as
chlorine
(Cl)
substituted
bromine
(Br),
decreasing
from
to
0.52
eV.
results
our
good
agreement
previously
reported
research.
optical
demonstrate
high
absorption
minimal
reflection
within
visible
spectrum.
determined
values
Poisson’s
Pugh’s
ratios
suggest
ductile
behavior.
obtained
Debye
temperature
265.25
191.62
K
Based
on
their
appropriate
coefficient,
these
considered
promising
candidates
photovoltaic
applications,
proposed
ideal
potential
solar
cells
applications.
Frontiers in Energy Research,
Journal Year:
2023,
Volume and Issue:
11
Published: Nov. 20, 2023
Large-scale
energy
storage
systems
(ESSs)
that
can
react
quickly
to
fluctuations
and
store
excess
are
required
increase
the
reliability
of
electricity
grids
rely
heavily
on
renewable
sources
(RESs).
Hybrid
systems,
which
combine
different
technologies
such
as
batteries
supercapacitors,
becoming
increasingly
popular
because
no
single
technology
satisfy
all
requirements.
In
this
study,
a
supercapacitor
is
used
stabilize
shifting
bursts
power,
while
battery
gradually
fluctuating
power
flow.
This
paper
proposes
robust
controller
for
managing
direct
current
(DC)
bus
voltage
optimize
performance
ESS.
The
proposed
combines
fractional-order
proportional
integral
(FOPI)
with
classical
PI
first
time
in
DC
microgrid
area.
hybrid
(FOPI-PI)
achieves
an
outstanding
superior
transient
dynamic
response
specifications
compared
other
traditional
controllers.
parameters
suggested
incorporated
self-adaptive
bonobo
optimizer
(SaBO)
determine
optimal
values.
Furthermore,
various
optimization
techniques
applied
model
SaBO’s
output
outperforms
by
minimizing
best
objective
function.
addition,
study
has
utilized
novel
management
strategy
includes
two
closed
loops
both
supercapacitors.
By
using
method,
batteries’
lifespans
may
be
increased
still
retaining
system
performance.
implemented
MATLAB/Simulink
2022b,
outcomes
reported
several
case
studies.
findings
demonstrate
control
technique
remarkably
improves
response,
duration,
overshoot/undershoot,
settling
time.
SaBO
effective
maintaining
under
load
solar
variation.
