Elucidating Gas Evolution of Prussian White Cathodes for Sodium‐ion Battery Application: The Effect of Electrolyte and Moisture
Batteries & Supercaps,
Год журнала:
2024,
Номер
7(4)
Опубликована: Янв. 15, 2024
Abstract
As
global
energy
storage
demand
increases,
sodium‐ion
batteries
are
often
considered
as
an
alternative
to
lithium‐ion
batteries.
Hexacyanoferrate
cathodes,
commonly
referred
Prussian
blue
analogues
(PBAs),
of
particular
interest
due
their
low‐cost
synthesis
and
promising
electrochemical
response.
However,
because
they
consist
~50
wt%
cyanide
anions,
a
possible
release
highly
toxic
gases
poses
significant
safety
risk.
Previously,
we
observed
the
evolution
(CN)
2
during
cycling
via
differential
mass
spectrometry
(DEMS),
but
were
unable
determine
root
cause
or
mechanism.
In
this
work,
present
systematical
investigation
gas
white
(PW)
with
different
water
content
DEMS.
While
H
is
main
detected,
especially
in
hydrated
PW
overcharge
(4.6
V
vs.
Na
+
/Na),
CO
depends
on
electrolyte
conductive
salt.
The
use
oxidative
NaClO
4
instead
NaPF
6
leading
for
formation
.
Mass
spectrometric
evidence
trace
amounts
HCN
also
found,
much
lower
extent
than
,
which
dominant
risk
when
using
‐containing
electrolyte,
despite
being
good
model
salt,
not
viable
option
commercial
applications.
Язык: Английский
Ameliorating water splitting by entropy regulation and electronic structure engineering on pristine Prussian blue analog
Journal of Colloid and Interface Science,
Год журнала:
2025,
Номер
690, С. 137316 - 137316
Опубликована: Март 12, 2025
Язык: Английский
Electrochemical generation of unconventional cyanide vacancies to boost the catalytic performance of Co-Prussian Blue on oxygen evolution reaction under mild conditions
Electrochimica Acta,
Год журнала:
2025,
Номер
unknown, С. 146327 - 146327
Опубликована: Апрель 1, 2025
Язык: Английский
Co-Prussian blue analogue supported on graphene-based materials as an electrocatalyst for OER at neutral pH
Energy Advances,
Год журнала:
2023,
Номер
3(2), С. 495 - 503
Опубликована: Дек. 26, 2023
Graphene-based
materials
doped
with
N
can
act
as
supports
to
boost
the
electrocatalytic
activity
of
Co-Prussian
Blue
in
oxygen
evolution
reaction
(OER)
under
mild
conditions.
Язык: Английский
Photochemical Pre-Treatment to Quantify Iron in Thin Films
Journal of the Brazilian Chemical Society,
Год журнала:
2023,
Номер
unknown
Опубликована: Янв. 1, 2023
Metal-based
catalysts
are
indispensable
in
modern
chemistry
and
one
of
the
biggest
challenges
for
industrial
applications
is
to
quantify
their
performance
stability.
The
metrics
can
be
obtained
terms
turnover
number
frequency,
stability
might
associated
with
leaching
heterogeneous
catalysts.
Thus,
metal
quantification
starting
point
understand
evaluate
features
Among
technologies
determination,
spectrophotometric
analysis
stands
out
being
cheap
easy
perform.
However,
challenge
sample
preparation
direct
from
materials.
Herein,
it
shown
how
important
photochemical
pre-treatment
total
iron
thin
films
composed
iron-based
approach
was
used
ensure
a
full
dissociation
ions
before
quantification.
This
method
revealed
highly
effective
precise,
having
wide
range
different
Язык: Английский