The Chemical Record,
Год журнала:
2023,
Номер
24(1)
Опубликована: Сен. 29, 2023
Abstract
The
research
in
energy
storage
and
conversion
is
playing
a
critical
role
policy
as
the
innovation
technological
progress
are
essential
for
achieving
transition
climate
neutrality
goals.
Hydrogen
Fuel
Cell
technology
considered
strategic
element
pursuit
of
sustainable
clean
solutions.
This
increasingly
gaining
attention
recent
years
potential
substitute
to
conventional
non‐renewable
sources.
cell
can
be
employed
domestic/commercial
use
along
with
powering
transportation
sector
which
currently
employs
battery
systems.
However,
these
systems
pose
severe
limitations
respect
longer
charging
times
limited
distance
range.
review
article
aims
at
providing
comprehensive
methodical
overview
hydrogen‐based
fuel
key
concepts,
present
day
scenarios,
including
market
industry
trends,
government
policies
initiatives,
major
stakeholders
involved
scaling
up
mass
consumption.
outlook
cells,
their
capability
revolutionise
discussed.
advancements
breakthroughs
on
horizon
challenges
safety
concerns
related
widespread
acceptance
cells
analysed.
Deleted Journal,
Год журнала:
2023,
Номер
2, С. e9120056 - e9120056
Опубликована: Фев. 25, 2023
Iridium
(Ir)-based
catalysts
are
highly
efficient
for
the
anodic
oxygen
evolution
reaction
(OER)
due
to
high
stability
and
anti-corrosion
ability
in
strong
acid
electrolyte.
Recently,
intensive
attention
has
been
directed
novel,
efficient,
low-cost
Ir-based
overcome
challenges
of
their
application
water
electrolysis
technique.
To
make
a
comprehensive
understanding
recently
developed
catalytic
properties,
mechanism
promotion
principles
were
discussed
OER
condition
aimed
proton
exchange
membrane
electrolyzer
(PEMWE)
this
review.
The
mechanisms
adsorbate
lattice
first
presented
easy
mechanism;
brief
perspective
analysis
from
aspects
geometric
effect,
electronic
synergistic
defect
engineering,
support
effect
was
concluded.
Then,
latest
progress
practical
introduced
detail,
which
classified
into
varied
composition
Ir
catalyst
terms
alloys,
hetero-element
doping,
perovskite,
pyrochlore,
heterostructure,
core–shell
structure,
supported
catalysts.
Finally,
problems
faced
by
current
acidic
electrolyte
put
forward.
It
is
concluded
that
with
low
loading
should
be
future,
paid
probing
structural
performance
correlation,
real
PEMWE
devices.Hopefully,
effort
can
helpful
catalysis
OER,
instructive
novel
design
fabrication.
Chemical Reviews,
Год журнала:
2023,
Номер
123(22), С. 12507 - 12593
Опубликована: Ноя. 1, 2023
Electrocatalysis
underpins
the
renewable
electrochemical
conversions
for
sustainability,
which
further
replies
on
metallic
nanocrystals
as
vital
electrocatalysts.
Intermetallic
have
been
known
to
show
distinct
properties
compared
their
disordered
counterparts,
and
long
explored
functional
improvements.
Tremendous
progresses
made
in
past
few
years,
with
notable
trend
of
more
precise
engineering
down
an
atomic
level
investigation
transferring
into
practical
membrane
electrode
assembly
(MEA),
motivates
this
timely
review.
After
addressing
basic
thermodynamic
kinetic
fundamentals,
we
discuss
classic
latest
synthetic
strategies
that
enable
not
only
formation
intermetallic
phase
but
also
rational
control
other
catalysis-determinant
structural
parameters,
such
size
morphology.
We
demonstrate
emerging
nanomaterials
potentially
advancement
energy
electrocatalysis.
Then,
state-of-the-art
characterizations
representative
electrocatalysts
emphasis
oxygen
reduction
reaction
evaluated
a
MEA
setup.
summarize
review
by
laying
out
existing
challenges
offering
perspective
future
research
directions
toward
practicing
conversions.
ACS Energy Letters,
Год журнала:
2024,
Номер
9(6), С. 2922 - 2935
Опубликована: Май 25, 2024
Large-scale
adoption
of
proton
exchange
membrane
water
electrolyzers
(PEMWEs)
is
hindered
by
limited
durability
costly
anodic
iridium
(Ir)
electrocatalysts.
Therefore,
it
crucial
to
establish
a
strategy
that
can
decrease
the
Ir
loadings
without
compromising
performance
and
stability
for
extended
applications
PEMWEs.
Employing
high-surface-area
conductive
corrosion-resistant
catalyst
support
enhance
dispersion
low
loading,
thereby
maximizing
active
site
density
stabilizing
under
harsh
operating
conditions.
In
this
review,
we
explore
role
oxygen
evolution
electrocatalysts
summarizing
distinct
properties
various
supports
such
as
composition,
surface
area,
conductivity,
anticorrosion
strong
catalyst–support
interactions.
Finally,
articulate
our
perspectives
on
future
research
directions,
emphasizing
durability,
synergy
between
electrocatalyst
scale-up
fabrication
Energy Storage and Saving,
Год журнала:
2024,
Номер
3(2), С. 106 - 152
Опубликована: Фев. 27, 2024
Due
to
its
zero
emissions,
high
efficiency
and
low
noise,
proton
exchange
membrane
fuel
cell
(PEMFC)
is
full
of
potential
for
the
application
vehicle
power
source.
Nonetheless,
lifespan
durability
remain
multiple
obstacles
be
solved
before
widespread
commercialization.
Frequent
exposure
non-rated
operating
conditions
could
considerably
accelerate
degradation
PEMFC
in
various
forms,
thus
reducing
durability.
This
paper
first
analyses
mechanisms
PEMFCs
under
typical
automotive
conditions,
including
idling,
startup-shutdown,
dynamic
loads,
cold
start.
The
corresponding
accelerated
stress
testing
methods
are
also
discussed.
Then,
as
impurities
existed
reaction
gas
source
generated
from
itself
may
occur
all
caused
by
impurity
contamination
classified
reviewed
detail.
After
that,
techniques
proposed
researchers
enhance
presented
four
aspects:
MEA
materials,
bipolar
plates
flow
fields
design,
stack
assembly,
control
strategies.
challenges
field
prospects
future
summarized
analyzed
at
end.
aim
this
work
provide
guidelines
improving
applications.
Journal of Materials Chemistry A,
Год журнала:
2023,
Номер
11(33), С. 17373 - 17391
Опубликована: Янв. 1, 2023
We
present
the
latest
progress
related
to
design
of
PEMFCs
with
high
specific
power
density,
focusing
on
catalysts,
proton
exchange
membranes,
gas
diffusion
layers,
and
bipolar
plates.
Relevant
challenges
prospects
are
also
presented.
Abstract
Oxygen
electrocatalysis
is
crucial
for
renewable
energy
conversion
and
storage
technologies.
Specifically
proton
exchange
membrane
fuel
cells
(PEMFCs),
oxygen
reduction
reaction
(ORR)
the
primary
that
determines
performance
costs.
The
ORR
activity
durability
are
commonly
assessed
using
a
rotating
disk
electrode
(RDE).
However,
there
numerous
inconsistencies
in
RDE
measurements
among
researchers
when
comparing
newly
developed
catalysts
to
state‐of‐the‐art
ones.
These
evaluation
deviations
from
standard
protocols
result
irreproducible
screening
benchmarking
of
electrocatalysts.
Despite
fact
US
Department
Energy
has
established
regularly
revises
protocols,
many
reported
studies
do
not
adhere
these
guidelines.
This
perspective
aims
draw
attention
discrepancies
stability
at
as
emphasizes
implementing
mandatory
meaningful
comparison
durability.
We
intend
emphasize
use
available
test
standards
ubiquitously
more
accurate
comparisons
accelerate
development
cell
catalysts.
