Weaving of Zn2V2O7 and VO2(B) nanoribbons by carbon nanotubes for aqueous zinc-ion batteries at room and high temperatures
Journal of Power Sources,
Год журнала:
2025,
Номер
635, С. 236504 - 236504
Опубликована: Фев. 16, 2025
Язык: Английский
Capturing Failure Mechanisms in Vanadium Oxide Cathodes for Aqueous Zinc Batteries
Research Square (Research Square),
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 26, 2025
Abstract
Aqueous
zinc
ion
batteries
(ZIBs)
attract
increasing
attention
as
alternative
energy
storage
technologies
due
to
their
merits
of
safety
and
low
cost.
However,
the
continuous
dissolution
active
materials
in
vanadium
oxide-based
ZIBs
has
posed
an
unavoidable
challenge.
Here,
we
systematically
analyzed
mechanism
using
both
ex-situ
in-situ
methods.
Experimental
theoretical
analyses
revealed
excessive
reduction
valence
following
H
+
insertion
at
potentials
above
1.0
V
(
vs.
Zn
2+/Zn),
primarily
contributing
rather
than
Zn
2+
insertion.
Protons
preferentially
form
monodentate
coordination
with
oxygen,
local
electron
density
around
atoms
facilitating
more
transitions
from
1
s
higher-energy
3
d
states.
This
leads
a
pronounced
V-valence
V-O
bond
breakage.
Specifically,
interlayer-inserted
exhibits
highest
its
significant
binding
compared
surface-inserted
H
+.
As
proof
concept,
without
additives
or
cathode
modifications,
electrochemical
improvements
Zn/NH
4V
4O
10
Zn/V
2O
5
were
achieved
by
reducing
cut-off
voltage
current
high
directly
inhibit
promote
favorable
surface-dominant
We
contend
that
understanding
chemistry
electrochemistry-related
failure
mechanisms
are
crucial
for
designing
Adv.
Mater.
applications.
Язык: Английский
Regulatory engineering of cathode for advanced quasi-solid-state zinc-ion battery
Journal of Alloys and Compounds,
Год журнала:
2025,
Номер
unknown, С. 180283 - 180283
Опубликована: Апрель 1, 2025
Язык: Английский
VO2/MoS2 heterostructure synergized oxygen vacancies as a cathode material for high-performance hybrid Mg/Li-ion batteries over a wide temperature range
Journal of Alloys and Compounds,
Год журнала:
2024,
Номер
unknown, С. 178281 - 178281
Опубликована: Дек. 1, 2024
Язык: Английский