ACS Sustainable Chemistry & Engineering,
Journal Year:
2024,
Volume and Issue:
12(28), P. 10593 - 10603
Published: July 2, 2024
High
energy
consumption
and
significant
anode
slime
emissions
pose
major
challenges
in
manganese
metallurgy.
Although
dimensionally
stable
anodes
(DSAs)
offer
a
potential
solution,
their
high
cost
limited
lifespan
harsh
environments
restrict
broader
use.
Here,
we
report
novel
Ti/IrO2–RuO2–SiO2
(T/IRS)
that
is
both
high-efficiency
eco-friendly,
designed
to
reduce
address
the
issue
of
electrowinning.
The
phase
composition
morphology
IrO2–RuO2–SiO2
coating
were
characterized.
electrochemical
properties
T/IRS
assessed,
demonstrating
superior
electrocatalytic
activity
electrode
stability
compared
traditional
Pb
alloy
anodes.
findings
indicate
MnO2
deposition
on
anode,
despite
decreasing
oxygen
evolution
slightly
increasing
anodic
potential,
substantially
improves
corrosion
resistance,
as
demonstrated
by
an
increase
from
0.240
0.663
V.
dense
layer
formation
also
effectively
prevents
production.
Galvanostatic
electrowinning
confirmed
reduces
eliminates
slime,
maintaining
average
cell
voltage
0.22
V
lower
than
Pb-0.5%Ag
at
cathodic
current
density
350
A
m–2.
Consequently,
presents
great
for
saving
waste
reduction,
making
it
viable
option
cleaner
sustainable
