Abstract
A
series
of
cathode
materials,
Li[Ni
0.6
Co
0.12
Mn
0.2
Fe
0.08
]
1‐x
Cr
x
O
2
(x=0,
0.02,
0.04,
0.06),
are
synthesized
via
the
co‐precipitation
method.
Structural
characterization
shows
that
3+
ions
successfully
incorporated
into
material
structure
and
evenly
dispersed
on
surface
crystal
particles
with
other
metal
elements.
The
Cr‐doped
a
well‐defined
hexagonal
layered
less
cation
mixing,
increase
in
interionic
interlayer
distances
is
beneficial
for
transport
lithium
ions.
Compared
to
pure
NCMFe
phase,
cyclic
rate
performances
quaternary
materials
have
been
significantly
improved.
Among
them,
4Cr
exhibits
best
electrochemical
performance.
capacity
retention
after
50
charge‐discharge
cycles
at
0.1
C
was
increased
from
74.83
%
87.32
%.
performance
has
also
87.6
92.69
can
reduce
charge
transfer
resistance
enhance
stability
structure,
which
results
outstanding
cathode.
CV
EIS
tests
were
conducted
various
doping
levels,
further
confirming
degree
polarization
electrode
discharge
reversibility,
materials.
Energy & Environmental Science,
Год журнала:
2023,
Номер
16(9), С. 3873 - 3884
Опубликована: Янв. 1, 2023
A
self-powered
system
composed
of
an
electrochemical
recycling
reactor
and
a
triboelectric
nanogenerator
is
proposed
for
spent
lithium-ion
battery
with
the
advantages
high
purity,
self-powering,
simplified
procedure,
profit.
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Авг. 2, 2024
Energy
management
strategy
is
the
essential
approach
for
achieving
high
energy
utilization
efficiency
of
triboelectric
nanogenerators
(TENGs)
due
to
their
ultra-high
intrinsic
impedance.
However,
proven
in
practical
applications
remains
low,
and
output
regulation
functionality
still
lacking.
Herein,
we
propose
a
detailed
transfer
extraction
mechanism
addressing
voltage
charge
losses
caused
by
crucial
switches
circuits.
The
conversion
increased
8.5
times
through
synergistical
optimization
TENG
switch
configurations.
Furthermore,
TENG-based
power
supply
with
storage
regularization
functions
realized
system
circuit
design,
demonstrating
stable
powering
electronic
devices
under
irregular
mechanical
stimuli.
A
rotating
that
only
works
21
s
can
make
hygrothermograph
work
stably
417
s.
Even
hand
driving,
various
types
TENGs
consistently
provide
such
as
calculators
mini-game
consoles.
This
provides
an
in-depth
between
circuits,
also
addresses
technical
challenge
converting
unstable
into
usable
electricity
field.
Effective
enable
realistic
applications.
Here,
authors
optimize
configurations
improve
design
functionalities.
Energy & Environmental Science,
Год журнала:
2024,
Номер
17(11), С. 3700 - 3738
Опубликована: Янв. 1, 2024
Fluid-based
triboelectric
nanogenerators
(F-TENGs)
represent
a
cutting-edge
technology
that
leverages
fluids
as
contact
medium
to
harness
renewable
energy
through
electrification
(CE)
and
electrostatic
induction.
Abstract
Triboelectric
nanogenerator
(TENG)
is
a
promising
solution
to
harvest
the
low‐frequency,
low‐actuation‐force,
and
high‐entropy
droplet
energy.
Conventional
attempts
mainly
focus
on
maximizing
electrostatic
energy
liquid‐solid
surface,
but
enormous
kinetic
of
hitting
substrate
directly
dissipated,
limiting
output
performance.
Here,
dual‐mode
TENG
(DM‐TENG)
proposed
efficiently
both
at
surface
from
(D‐TENG)
elastic
potential
vibrated
cantilever
contact‐separation
(CS‐TENG).
Triggered
by
small
droplets,
flexible
beam,
rather
than
conventional
stiff
ones,
can
easily
vibrate
multiple
times
with
large
amplitude,
enabling
frequency
multiplication
CS‐TENG
producing
amplified
charges.
Combining
top
electrode
design
sufficiently
utilize
charges
interface,
record‐high
charge
158
nC
realized
single
droplet.
The
conversion
efficiency
DM‐TENG
2.66‐fold
D‐TENG.
An
array
system
specially
designed
power
management
circuit
also
demonstrated
for
building
self‐powered
system,
offering
applications
harvesting
raindrop
Advanced Energy Materials,
Год журнала:
2023,
Номер
14(8)
Опубликована: Дек. 31, 2023
Abstract
Charge
generation
and
charge
decay
are
two
essential
factors
that
determine
the
surface
density
of
a
triboelectric
nanogenerator
(TENG).
However,
research
mainly
focuses
on
boosting
generation,
little
attention
is
paid
to
suppressing
decay.
Here,
strategy
decay,
including
air
breakdown
dielectric
leakage,
TENG
with
high
(HCD‐TENG)
proposed
by
utilizing
dual
layer.
A
series
parameters
different
materials
tested
assistance
excitation
(CE‐TENG)
reveal
relationships
between
breakdown,
leakage
in
atmospheric
environment.
Further,
phenomenon
limiting
maximum
output
prior
observed
for
first
time.
With
simultaneous
suppression
enhanced
2.2
mC
m
−2
.
This
work
not
only
provides
new
insight
into
performance
optimization
material
selection
TENG,
but
also
significant
guidance
obtaining
high‐output
future.
Advanced Energy Materials,
Год журнала:
2024,
Номер
14(18)
Опубликована: Фев. 14, 2024
Abstract
Accurate
measurement
of
complicated
multiphase
flow
is
crucial
to
the
safety
and
efficiency
petroleum
chemical
industrial
facilities.
However,
existing
detection
techniques
are
not
applicable
pipelines
in
remote
regions
including
deserts
or
deep
seas,
due
high
cost
providing
a
stable
power
supply.
Herein,
self‐powered
sensor,
composed
liquid‐driven
triboelectric
nanogenerator
(TENG)
‐based
signal
generator,
ring‐type
transmitter,
string‐type
receiver,
proposed.
Theoretical
modeling
displacement
current
between
transmitter
receiver
implies
that
received
can
accurately
reflect
wetting
state
validated
by
combined
experimental
(accuracy
above
97%)
simulation
study.
Coupling
with
quantitative
analysis
algorithm,
system
numerous
points
developed
precisely
monitor
various
parameters,
slug
frequency
(one
point),
length
(two
points),
pattern
(four
which
verified
spontaneous
high‐speed
camera
recordings
water–air
flow.
The
present
work
provides
paradigm‐shift
way
develop
self‐powered,
inexpensive,
accurate
technique
detect
at
