Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 21, 2025
Abstract
Electrochemical
energy
storage
(EES)
demonstrates
significant
potential
for
large‐scale
applications
in
renewable
storage.
Among
these
systems,
vanadium
redox
flow
batteries
(VRFB)
have
garnered
considerable
attention
due
to
their
promising
prospects
widespread
utilization.
The
performance
and
economic
viability
of
VRFB
largely
depend
on
critical
components,
including
membranes,
electrodes,
electrolytes.
However,
as
the
fundamental
materials
ion
conduction,
often
struggle
effectively
balance
proton
transfer
while
preventing
crossover,
enhancing
long‐term
stability,
reducing
manufacturing
costs.
Additionally,
inherent
structural
limitations
surface
property
defects
electrode
significantly
impact
improvement
V
2+
/V
3+
electrochemical
reaction
kinetics
enhancement
power
density.
Furthermore,
composition
concentration
electrolyte
play
a
crucial
role
determining
cost
VRFB,
well
its
density
cycling
performance.
This
review
analyzes
summarizes
each
component,
reviews
evaluates
latest
research
advancements
material
modification,
optimization,
processes
components
over
past
5
years.
Moreover,
comprehensive
assessment
environmental
sustainability,
feasibility,
is
presented,
aiming
provide
strategic
guidance
commercialization
VRFB.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(8), P. 10019 - 10032
Published: Feb. 20, 2024
In
this
study,
new
fluorite
high-entropy
oxide
(HEO),
(BiZrMoWCeLa)O2,
nanoparticles
were
produced
using
a
surfactant-assisted
hydrothermal
technique
followed
by
calcination
and
used
as
novel
catalytic
materials
for
vanadium
redox
flow
batteries
(VRFBs).
The
HEO
calcined
at
750
°C
(HEO-750)
demonstrates
superior
electrocatalytic
activity
toward
V3+/V2+
VO2+/VO2+
couples
compared
to
those
of
cells
assembled
with
other
samples.
charge–discharge
tests
further
confirm
that
VRFBs
the
HEO-750
catalyst
demonstrate
excellent
Coulombic
efficiency,
voltage
energy
efficiency
97.22,
87.47,
85.04%
current
density
80
mA
cm–2
98.10,
74.76,
73.34%
higher
160
cm–2,
respectively.
Moreover,
500
cycles,
there
is
no
discernible
degradation.
These
results
are
attributed
heat
treatment,
which
induces
formation
single-phase
structure,
facilitates
reactions
couples.
Furthermore,
high
surface
area,
wettability,
plenty
oxygen
vacancies
can
give
more
electroactive
sites,
improving
electrochemical
performance,
charge
transfer
processes,
stability
VRFBs'
electrode.
This
first
report
on
development
structure
in
VRFBs,
it
opens
door
research
into
HEOs.
ACS Materials Letters,
Journal Year:
2024,
Volume and Issue:
6(7), P. 2816 - 2836
Published: June 6, 2024
The
vanadium
redox
flow
battery
(VRFB)
has
become
a
highly
favored
energy
storage
system
due
to
its
long
life,
safety,
environmental
friendliness,
and
scalability.
However,
the
inherently
problematic
properties
of
electrode
have
hindered
widespread
application
VRFB
technology.
Therefore,
understanding
progress
modification
research
is
critical
advance
development
high-performance
VRFB.
This
review
highlights
potential
challenges
carbon
electrodes
for
applications,
including
poor
hydrophilicity,
low
reactivity,
high
mass
transfer
resistance.
It
reviews
recent
advances
in
addressing
these
three
aspects,
reveals
influencing
factors
on
each
particular
challenge,
describes
mechanism
influence
key
factor.
provides
reference
developing
applying
Finally,
some
practical
suggestions
prospects
are
provided
future
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 21, 2025
Abstract
Electrochemical
energy
storage
(EES)
demonstrates
significant
potential
for
large‐scale
applications
in
renewable
storage.
Among
these
systems,
vanadium
redox
flow
batteries
(VRFB)
have
garnered
considerable
attention
due
to
their
promising
prospects
widespread
utilization.
The
performance
and
economic
viability
of
VRFB
largely
depend
on
critical
components,
including
membranes,
electrodes,
electrolytes.
However,
as
the
fundamental
materials
ion
conduction,
often
struggle
effectively
balance
proton
transfer
while
preventing
crossover,
enhancing
long‐term
stability,
reducing
manufacturing
costs.
Additionally,
inherent
structural
limitations
surface
property
defects
electrode
significantly
impact
improvement
V
2+
/V
3+
electrochemical
reaction
kinetics
enhancement
power
density.
Furthermore,
composition
concentration
electrolyte
play
a
crucial
role
determining
cost
VRFB,
well
its
density
cycling
performance.
This
review
analyzes
summarizes
each
component,
reviews
evaluates
latest
research
advancements
material
modification,
optimization,
processes
components
over
past
5
years.
Moreover,
comprehensive
assessment
environmental
sustainability,
feasibility,
is
presented,
aiming
provide
strategic
guidance
commercialization
VRFB.
