Renewable and Sustainable Energy Reviews,
Journal Year:
2023,
Volume and Issue:
189, P. 113883 - 113883
Published: Oct. 24, 2023
Green
hydrogen
is
seen
as
a
promising
energy
storage
and
balancing
solution
to
complement
the
ever-increasing
share
of
variable
renewable
sources
in
grid.
The
dynamic
operation
polymer
electrolyte
membrane
(PEM)
electrolyzers
has
potential
simultaneously
lower
cost
green
improve
flexibility
grid
by
taking
advantage
volatility
production.
However,
affects
wide
range
variables
related
degradation
electrolyzer
components
safety
efficiency
process,
often
counterintuitive
ways.
This,
turn,
makes
it
difficult
predict
levelized
produced
when
operating
on
electricity
markets.
This
critical
review
examines
state-of-the-art
literature
behavior
PEM
under
operation,
bearing
mind
objective
reducing
hydrogen.
Knowledge
gaps,
key
development
directions,
future
research
needs
are
identified
with
respect
electrolysis
equipment,
parameters,
degradation,
role
dynamically
operated
It
found
that
while
field
developing
at
rapid
pace,
there
lack
holistic
studies
consider
all
(or
even
most
of)
interconnected
affect
during
electrolyzers.
postulated
this
complex
network
interactions
will
give
rise
data-driven
approaches
(such
Machine
Learning)
bridge
gap.
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(26)
Published: March 8, 2023
The
slow
water
dissociation
process
in
alkaline
electrolyte
severely
limits
the
kinetics
of
HER.
orientation
H2
O
is
well
known
to
affect
process,
but
hard
control
because
its
random
distribution.
Herein,
an
atomically
asymmetric
local
electric
field
was
designed
by
IrRu
dizygotic
single-atom
sites
(IrRu
DSACs)
tune
adsorption
configuration
and
orientation,
thus
optimizing
process.
intensity
DSACs
over
4.00×1010
N/C.
ab
initio
molecular
dynamics
simulations
combined
with
situ
Raman
spectroscopy
analysis
on
behavior
show
that
M-H
bond
length
(M=active
site)
shortened
at
interface
due
strong
gradient
optimized
promotes
interfacial
water.
This
work
provides
a
new
way
explore
role
single
atomic
hydrogen
evolution
reaction.
Molecules,
Journal Year:
2022,
Volume and Issue:
27(21), P. 7617 - 7617
Published: Nov. 6, 2022
The
development
of
efficient
electrochemical
seawater
splitting
catalysts
for
large-scale
hydrogen
production
is
great
importance.
In
this
work,
we
report
an
amorphous
Co-Mo-B
film
on
Ni
foam
(Co-Mo-B/NF)
via
a
facile
one-step
electrodeposition
process.
Such
Co-Mo-B/NF
possesses
superior
activity
with
small
overpotential
199
mV
at
100
mA
cm−2
evolution
reaction
in
alkaline
seawater.
Notably,
also
maintains
excellent
stability
least
24
h
under
electrolysis.
Nano Energy,
Journal Year:
2023,
Volume and Issue:
115, P. 108718 - 108718
Published: July 17, 2023
Electrocatalysts
play
a
pivotal
role
in
reducing
the
reaction
barriers
for
key
reactions
such
as
oxygen
reduction
(ORR),
evolution
(OER),
and
hydrogen
(HER),
which
are
essential
development
of
environment-friendly
energy
conversion
devices
including
metal
air
batteries
(MABs),
proton
exchange
membrane
fuel
cells
(PEMFCs),
oxyhydrogen
(OFC),
water
electrolyzers
(WE).
Despite
acknowledged
effectiveness
noble
metals
(Pt,
Ir,
Ru-based)
electrocatalysts,
their
high
cost
scarcity
greatly
limit
large-scale
application.
Thus,
there
is
an
urgent
need
to
design
low
precious
loading/noble
metal-free
electrocatalysts.
The
electronic
structure
plays
crucial
determining
efficiency
electron
transfer
during
electrochemical
reactions.
Modifying
can
facilitate
charge
processes
or
create
efficient
active
sites
with
barriers,
both
beneficial
designing
electrocatalysts
catalytic
activity.
In
this
article,
we
review
strategies
modifying
materials
without
introducing
other
phases
(known
self-modification)
multi-phase
modification).
Specifically,
self-modification
heteroatom
doping,
edge/vacancy
engineering,
functional
group
introducing,
tuning
exposed
crystal
planes,
modification
regarding
heterostructure
creation
analyzed
detail.
These
useful
that
reinforce
process
Additionally,
two
approaches
accelerating
on
electrode
bind-free/integrated
constructing
assembly,
have
also
been
discussed
pushing
forward
practical
At
last,
provide
comprehensive
summary
future
perspectives
self-modification/multi-phase
application
these
low-cost
article.
ACS Nano,
Journal Year:
2022,
Volume and Issue:
16(11), P. 17761 - 17777
Published: Nov. 10, 2022
The
water
oxidation
reaction
(or
oxygen
evolution
reaction,
OER)
plays
a
critical
role
in
green
hydrogen
production
via
splitting,
electrochemical
CO2
reduction,
and
nitrogen
fixation.
four-electron
four-proton
transfer
OER
process
involves
multiple
intermediates
elementary
steps
that
lead
to
sluggish
kinetics;
therefore,
high
overpotential
is
necessary
drive
the
reaction.
Among
different
water-splitting
electrolyzers,
proton
exchange
membrane
type
electrolyzer
has
greater
advantages,
but
its
anode
catalysts
are
limited
iridium-based
materials.
iridium
catalyst
been
extensively
studied
recent
years
due
balanced
activity
stability
for
acidic
OER,
many
exciting
signs
of
progress
have
made.
In
this
review,
surface
bulk
Pourbaix
diagrams
species
an
aqueous
solution
introduced.
catalysts,
including
metallic
or
oxides,
amorphous
crystalline,
single
crystals,
atomically
dispersed
nanostructured,
compounds
then
elaborated.
latest
active
sites,
intermediates,
kinetics,
summarized.
Finally,
future
research
directions
regarding
discussed.
Nano-Micro Letters,
Journal Year:
2024,
Volume and Issue:
16(1)
Published: Feb. 5, 2024
Developing
high-performance
aqueous
Zn-ion
batteries
from
sustainable
biomass
becomes
increasingly
vital
for
large-scale
energy
storage
in
the
foreseeable
future.
Therefore,
γ-MnO
Industrial Chemistry and Materials,
Journal Year:
2023,
Volume and Issue:
1(3), P. 312 - 331
Published: Jan. 1, 2023
This
review
discusses
the
OER
reaction
mechanism
(AEM
and
LOM)
research
progress
of
MnO
2
-based
catalysts.
The
optimization
strategy
catalysts
was
summarized.
