Advanced Materials,
Год журнала:
2017,
Номер
29(11)
Опубликована: Янв. 19, 2017
Nickel
nanoparticles
encapsulated
in
few-layer
nitrogen-doped
graphene
(Ni@NC)
are
synthesized
by
using
a
Ni-based
metal-organic
framework
as
the
precursor
for
high-temperature
annealing
treatment.
The
resulting
Ni@NC
materials
exhibit
highly
efficient
and
ultrastable
electrocatalytic
activity
toward
hydrogen
evolution
reaction
oxygen
well
overall
water
splitting
alkaline
environment.
Better
living
through
water-splitting
Chemists
have
known
how
to
use
electricity
split
water
into
hydrogen
and
oxygen
for
more
than
200
years.
Nonetheless,
because
the
electrochemical
route
is
inefficient,
most
of
made
nowadays
comes
from
natural
gas.
Seh
et
al.
review
recent
progress
in
electrocatalyst
development
accelerate
water-splitting,
reverse
reactions
that
underlie
fuel
cells,
related
oxygen,
nitrogen,
carbon
dioxide
reductions.
A
unified
theoretical
framework
highlights
need
catalyst
design
strategies
selectively
stabilize
distinct
reaction
intermediates
relative
each
other.
Science
,
this
issue
p.
10.1126/science.aad4998
Chemical Reviews,
Год журнала:
2018,
Номер
118(13), С. 6337 - 6408
Опубликована: Март 19, 2018
Over
the
past
few
decades,
design
and
development
of
advanced
electrocatalysts
for
efficient
energy
conversion
technologies
have
been
subjects
extensive
study.
With
discovery
graphene,
two-dimensional
(2D)
nanomaterials
emerged
as
some
most
promising
candidates
heterogeneous
due
to
their
unique
physical,
chemical,
electronic
properties.
Here,
we
review
2D-nanomaterial-based
selected
electrocatalytic
processes.
We
first
discuss
advances
in
2D
based
on
different
compositions
functions
followed
by
specific
principles.
Following
this
overview,
various
processes
involved
water
cycle,
carbon
nitrogen
cycle
from
fundamental
conception
functional
application.
place
a
significant
emphasis
engineering
strategies
influence
these
intrinsic
material
performance,
such
properties
adsorption
energetics.
Finally,
feature
opportunities
challenges
ahead
electrocatalysts.
By
considering
theoretical
calculations,
surface
characterization,
electrochemical
tests,
describe
relationships
between
structure,
energy,
apparent
activity
wide
variety
with
goal
providing
better
understanding
emerging
at
atomic
level.
Chemical Reviews,
Год журнала:
2017,
Номер
117(15), С. 10121 - 10211
Опубликована: Июль 26, 2017
Spinels
with
the
formula
of
AB2O4
(where
A
and
B
are
metal
ions)
properties
magnetism,
optics,
electricity,
catalysis
have
taken
significant
roles
in
applications
data
storage,
biotechnology,
electronics,
laser,
sensor,
conversion
reaction,
energy
storage/conversion,
which
largely
depend
on
their
precise
structures
compositions.
In
this
review,
various
spinels
controlled
preparations
oxygen
reduction/evolution
reaction
(ORR/OER)
beyond
summarized.
First,
composition
structure
introduced.
Then,
recent
advances
preparation
solid-,
solution-,
vapor-phase
methods
summarized,
new
particularly
highlighted.
The
physicochemical
characteristics
such
as
compositions,
structures,
morphologies,
defects,
substrates
been
rationally
regulated
through
approaches.
This
regulation
can
yield
improved
ORR/OER
catalytic
activities,
further
accelerate
speed,
prolong
life,
narrow
polarization
fuel
cells,
metal-air
batteries,
water
splitting
devices.
Finally,
magnetic,
optical,
electrical,
OER/ORR
also
discussed.
future
considered
to
be
closely
related
environmental
issues,
will
aided
by
development
species
advanced
characterizations.
Advanced Materials,
Год журнала:
2019,
Номер
31(31)
Опубликована: Янв. 18, 2019
Electrochemical
energy
storage
by
making
H2
an
carrier
from
water
splitting
relies
on
four
elementary
reactions,
i.e.,
the
hydrogen
evolution
reaction
(HER),
oxidation
(HOR),
oxygen
(OER),
and
reduction
(ORR).
Herein,
central
objective
is
to
recommend
systematic
protocols
for
activity
measurements
of
these
reactions
benchmark
activities
comparison,
which
critical
facilitate
research
development
catalysts
with
high
stability.
Details
electrochemical
cell
setup,
measurements,
data
analysis
used
quantify
kinetics
HER,
HOR,
OER,
ORR
in
acidic
basic
solutions
are
provided,
examples
state-of-the-art
specific
mass
date
given.
First,
experimental
setup
discussed
provide
common
guidelines
including
design,
reference
electrode
selection,
counter
concerns,
working
preparation.
Second,
protocols,
collection
processing
such
as
ohmic-
background-correction
catalyst
surface
area
estimation,
practice
testing
comparing
different
classes
recommended.
Lastly,
some
benchmarked
comparison
across
laboratories.