Chemistry - A European Journal,
Journal Year:
2019,
Volume and Issue:
26(9), P. 2034 - 2040
Published: Nov. 7, 2019
A
new
hatted
1T/2H-phase
MoS2
on
Ni3
S2
nanorods,
as
a
bifunctional
electrocatalyst
for
overall
water
splitting
in
alkaline
media,
is
prepared
through
simple
one-pot
hydrothermal
synthesis.
The
hat-rod
structure
composed
mainly
of
,
with
1T/2H-MoS2
adhered
to
the
top
growth.
Aqueous
ammonia
plays
an
important
role
forming
1T-phase
by
twisting
2H-phase
transition
and
expanding
interlayer
spacing
intercalation
NH3
/NH4+
.
Owing
special
"hat-like"
structure,
electrons
conduct
easily
from
Ni
foam
along
catalyst
particles
maintain
sufficient
contact
electrolyte,
gaseous
molecules
produced
removed
surface
catalyst.
Thus,
electrocatalytic
performance
enhanced,
overpotential
73
mV,
Tafel
slope
79
mV
dec-1
excellent
stability,
OER
demonstrates
190
166
Journal of Materials Chemistry A,
Journal Year:
2021,
Volume and Issue:
9(9), P. 5320 - 5363
Published: Jan. 1, 2021
This
review
summarizes
recent
advances
relating
to
transition
metal
sulfide
(TMS)-based
bifunctional
electrocatalysts,
providing
guidelines
for
the
design
and
fabrication
of
TMS-based
catalysts
practical
application
in
water
electrolysis.
Nanoscale,
Journal Year:
2019,
Volume and Issue:
11(15), P. 7506 - 7512
Published: Jan. 1, 2019
Design
of
cost-effective
bifunctional
electrocatalysts
for
both
the
oxygen
evolution
reaction
(OER)
and
hydrogen
(HER)
is
vital
developing
energy
future.
Herein,
a
phosphorus-doped
Co-Fe-B
material
with
chain-like
structure
(denoted
as
Co1-Fe1-B-P)
reported
an
efficient
novel
electrocatalyst
OER
HER,
was
produced
via
facile
water-bath
synthesis
subsequent
phosphorization.
For
OER,
as-prepared
Co1-Fe1-B-P
nanochains
require
extremely
low
overpotential
about
225
mV
at
10
mA
cm-2
possess
small
Tafel
slope
40
dec-1
in
alkaline
media.
Impressively,
HER
properties
are
superior
to
those
P-free
terms
(173
vs.
239
mV)
kinetic
(96
dec-1vs.
105
dec-1).
The
synergetic
effect
between
doped-P
mainly
responsible
satisfactory
performance,
while
one-dimensional
(1D)
endows
abundant
catalytically
active
sites
that
enhance
atom
utilization
efficiency.
Moreover,
developed
can
be
simultaneously
utilized
cathode
anode
overall
water-splitting,
which
requires
cell
voltage
only
1.68
V
deliver
cm-2.
This
work
provides
feasible
promising
protocol
realize
metal
borides
energy-related
applications.
ACS Applied Materials & Interfaces,
Journal Year:
2021,
Volume and Issue:
13(8), P. 9865 - 9874
Published: Feb. 17, 2021
Electrocatalytic
water
splitting
is
a
promising
technology
for
large-scale
hydrogen
production.
However,
it
requires
efficient
catalysts
to
overcome
the
large
overpotentials
in
oxygen
evolution
reaction
(OER)
and
(HER).
Herein,
we
report
novel
heterostructure
catalyst
Co9S8/Cu2S
on
copper
foam
(Co9S8/Cu2S/CF)
with
multistep
impregnation
electrodeposition.
Due
strong
interfacial
interaction,
electrons
transfer
from
Co
sites
S
sites,
which
promote
adsorption
of
oxygen-containing
intermediates,
molecules,
as
well
dissociation
molecules.
Therefore,
exhibits
low
195
mV
OER
165
HER
at
10
mA
cm–2,
respectively.
Moreover,
only
needs
1.6
V
realize
cm–2
two-electrode
cell.
This
work
provides
an
method
tailor
surface
electronic
structure
through
specific
morphological
design
construct
interface
achieve
alkaline
splitting.
Journal of Materials Chemistry A,
Journal Year:
2020,
Volume and Issue:
9(6), P. 3095 - 3124
Published: Dec. 10, 2020
In
this
review,
electrocatalysts
for
HER/OER/ORR
and
energy
storage
electrode
materials
based
on
MnCo
2
O
4
were
reviewed
considering
their
key
multifunctional
role
in
the
way
to
a
more
sustainable
society.
Journal of Materials Chemistry A,
Journal Year:
2019,
Volume and Issue:
7(28), P. 16761 - 16769
Published: Jan. 1, 2019
The
heterostructure
CoMoO4–Co2Mo3O8
was
prepared
by
a
two-step
method,
including
hydrothermal
synthesis
of
CoMoO4
nanowire
and
subsequent
hydrogen
reduction
treatment
CoMoO4.
Due
to
hierarchical
nanostructures
facilitated
intrinsic
activity
conductivity,
the
outstanding
performance
for
HER,
surpassing
most
cobalt–molybdenum
bimetal
oxide.
