Energy & Fuels,
Journal Year:
2024,
Volume and Issue:
38(15), P. 13585 - 13611
Published: July 16, 2024
The
demand
for
energy
storage
is
exponentially
increasing
with
the
growth
of
human
population,
which
highly
intensive.
This
progress
demands
high-performing
and
reliable
devices
storing
delivering
charge
efficiently.
Hybrid
ion
supercapacitors
are
most
desirable
electrochemical
devices,
owing
to
their
versatile
tunable
performance
characteristics,
as
they
optimized
assembly
batteries
(energy
devices)
(power
devices).
In
this
regard,
ammonium
hybrid
(AIHSs)
have
grabbed
substantial
research
consideration
in
past
years
due
notable
advantages
affordability,
safety,
fast
diffusion
kinetics,
ecofriendliness,
high
density,
unique
tetrahedral
structure
abundant
carriers
NH4+
resources.
Up
now,
although
there
been
advancements
AIHSs
over
few
years,
including
various
electrode
materials,
device
structures,
novel
electrolytes,
remains
a
lack
comprehensive
reviews
that
cover
recent
developments
provide
critical
insights
into
rapidly
evolving
field.
Therefore,
review
culminates
fundamental
principles,
basic
mechanisms,
approaches
enhancing
performances
AIHSs,
focusing
on
improving
these
parameters
improve
specific
capacitance,
longevity
commercial
success
capacitors,
nascent
stages
development.
To
best
our
knowledge,
it
first
complete
account
from
mechanism
developments.
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
35(39)
Published: June 26, 2023
Ammonium-ion
aqueous
supercapacitors
are
raising
notable
attention
owing
to
their
cost,
safety,
and
environmental
advantages,
but
the
development
of
optimized
electrode
materials
for
ammonium-ion
storage
still
lacks
behind
expectations.
To
overcome
current
challenges,
here,
a
sulfide-based
composite
based
on
MoS2
polyaniline
(MoS2
@PANI)
is
proposed
as
an
host.
The
possesses
specific
capacitances
above
450
F
g-1
at
1
A
,
86.3%
capacitance
retention
after
5000
cycles
in
three-electrode
configuration.
PANI
not
only
contributes
electrochemical
performance
also
plays
key
role
defining
final
architecture.
Symmetric
assembled
with
such
electrodes
display
energy
densities
60
Wh
kg-1
power
density
725
W
.
Compared
Li+
K+
ions,
surface
capacitive
contribution
NH4+
-based
devices
lower
every
scan
rate,
which
points
effective
generation/breaking
H-bonds
mechanism
controlling
rate
insertion/de-insertion.
This
result
supported
by
functional
theory
calculations,
show
that
sulfur
vacancies
effectively
enhance
adsorption
improve
electrical
conductivity
whole
composite.
Overall,
this
work
demonstrates
great
potential
engineering
optimizing
insertion
electrodes.
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: March 2, 2024
Abstract
Ammonium
ion
batteries
are
promising
for
energy
storage
with
the
merits
of
low
cost,
inherent
security,
environmental
friendliness,
and
excellent
electrochemical
properties.
Unfortunately,
lack
anode
materials
restricts
their
development.
Herein,
we
utilized
density
functional
theory
calculations
to
explore
V
2
CT
x
MXene
as
a
working
potential.
demonstrates
pseudocapacitive
behavior
ammonium
storage,
delivering
high
specific
capacity
115.9
mAh
g
−1
at
1
A
retention
100%
after
5000
cycles
5
.
In-situ
quartz
crystal
microbalance
measurement
verifies
two-step
process
this
unique
in
acetate
electrolyte.
Theoretical
simulation
reveals
reversible
electron
transfer
reactions
[NH
4
+
(HAc)
3
]···O
coordination
bonds,
resulting
superior
capacity.
The
generality
enhancement
effect
is
also
confirmed
MoS
-based
ammonium-ion
battery
system.
These
findings
open
new
door
realizing
on
through
enhancement,
breaking
limitations
both
Faradaic
non-Faradaic
storage.
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
35(41)
Published: Aug. 23, 2023
Ammonium
ions
(NH4+
)
are
emerging
non-metallic
charge
carriers
for
advanced
electrochemical
energy
storage
devices,
due
to
their
low
cost,
elemental
abundance,
and
environmental
benignity.
However,
finding
suitable
electrode
materials
achieve
rapid
diffusion
kinetics
NH4+
remains
a
great
challenge.
Herein,
2D
conjugated
metal-organic
framework
(2D
c-MOF)
immobilizing
iodine,
as
high-performance
cathode
material
hybrid
supercapacitors,
is
reported.
Cu-HHB
(HHB
=
hexahydroxybenzene)
MOF
embedded
with
iodine
(Cu-HHB/I2
features
excellent
electrical
conductivity,
highly
porous
structure,
rich
accessible
active
sites
of
copper-bis(dihydroxy)
(Cu─O4
iodide
species,
resulting
in
remarkable
areal
capacitance
111.7
mF
cm-2
at
0.4
mA
.
Experimental
results
theoretical
calculations
indicate
that
the
Cu─O4
species
play
critical
role
binding
polyiodide
suppressing
its
dissolution,
well
contributing
large
pseudocapacitance
adsorbed
iodide.
In
combination
MXene
anode,
full
supercapacitors
deliver
an
density
31.5
mWh
long-term
cycling
stability
89.5%
retention
after
10
000
cycles,
superior
those
state-of-the-art
supercapacitors.
This
study
sheds
light
on
design
storage,
enabling
development
novel
devices.
Advanced Science,
Journal Year:
2023,
Volume and Issue:
10(9)
Published: Jan. 25, 2023
Layered
vanadium-based
oxides
are
the
promising
cathode
materials
for
aqueous
zinc-ion
batteries
(AZIBs).
Herein,
an
in
situ
electrochemical
strategy
that
can
effectively
regulate
interlayer
distance
of
layered
NH4
V4
O10
quantitatively
is
proposed
and
a
close
relationship
between
optimal
performances
with
space
revealed.
Specifically,
via
increasing
cutoff
voltage
from
1.4,
1.6
to
1.8
V,
be
well-controlled
enlarged
10.21,
11.86,
12.08
Å,
respectively,
much
larger
than
pristine
one
(9.5
Å).
Among
them,
being
charging
V
(NH4
-C1.6),
demonstrates
best
Zn2+
storage
including
high
capacity
223
mA
h
g-1
at
10
A
long-term
stability
retention
97.5%
over
1000
cycles.
Such
superior
attributed
good
balance
among
active
redox
sites,
charge
transfer
kinetics,
crystal
structure
stability,
enabled
by
careful
control
space.
Moreover,
-C1.6
delivers
NH4+
whose
reaches
296
0.1
lifespan
lasts
3000
cycles
5
.
This
study
provides
new
insights
into
understand
limitation
ion
media
guides
exploration
high-performance
materials.
