泡沫状3D介孔NiO-Ni：高性能锂离子电池阳极
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"通过水热蚀刻和退火处理在镍泡沫上制备出泡沫状3D介孔NiO-Ni，这种材料表现出优秀的锂离子电池阳极性能，具有良好的循环稳定性和倍率特性。"
文章详细阐述了一种创新的材料制备方法，即通过简便的水热蚀刻技术，随后进行退火处理，在镍泡沫基底上成功制得了泡沫状的三维介孔NiO-Ni结构。这种结构独特，主要由大量平均厚度约为50纳米的纳米片组成，并且内部含有众多介孔，孔径大小在100纳米到1微米之间。这种多孔结构设计有利于提高电极材料的比表面积，进而提升锂离子的存储和传输效率。
电化学测试结果显示，泡沫状3D介孔NiO-Ni作为锂离子电池的负极，表现出了优异的性能。在0.7 C的充放电速率下，首次放电和充电容量分别达到了979和707毫安时/克。在经过100个充放电循环后，仍能保持747和738毫安时/克的容量，显示出出色的循环稳定性。此外，即使在快速充放电条件下（0.06至14 C的宽范围速率），经过60个循环后，当速率恢复到0.06 C时，NiO-Ni电极的第十次充放电容量仍可恢复至699和683毫安时/克，这证明了其良好的倍率性能。
关键词涵盖了微孔材料、电化学测量和能量存储等领域，表明这项工作不仅涉及材料科学，还涉及到实际应用中的能源储存技术。该研究对于提升锂离子电池的能量密度和使用寿命具有重要意义，为设计和开发新型高性能电池提供了新的思路和方法。泡沫状3D介孔NiO-Ni的出色性能预示着它可能成为未来锂离子电池领域的一个重要候选材料，有望推动电动车、便携式电子设备等领域的电池技术进步。
Short
communication
The
fabrication
of
foam-like
3D
mesoporous
NiO-Ni
as
anode
for
high
performance
Li-ion
batteries
Peng
Huang
a,b,
*
,
Xin
Zhang
a,b
,
Jumeng
Wei
a,b
,
Jiaqi
Pan
a,b
,
Yingzhou
Sheng
a,b
,
Boxue
Feng
a,b
a
Key
Laboratory
Magnetism
and
Magnetic
Material
of
Education
Lanzhou
University,
Lanzhou
730000,
China
b
Department
of
Physics,
Lanzhou
University,
Lanzhou
730000,
China
A
R
T
I
C
L
E
I
N
F
O
Article
history:
Received
25
March
2014
Received
in
revised
form
24
September
2014
Accepted
5
October
2014
Available
online
13
October
2014
Keywords:
A.
Microporous
materials
D.
Electrochemical
measurement
D.
Energy
storage
A
B
S
T
R
A
C
T
Foam-like
three
dimensional
mesoporous
NiO
on
Ni
foam
was
fabricated
via
facile
hydrothermal
etching
and
subsequent
annealing
treatment.
The
porous
NiO
consists
of
a
large
number
of
nanosheets
with
mean
thickness
about
50
nm,
among
which
a
large
number
of
mesoscopic
pores
with
size
ranges
from
100
nm
to
1
m
m
distribute.
The
electrochemical
performance
of
the
as-prepared
NiO-Ni
as
anode
for
lithium
ion
battery
was
studied
by
conventional
charge/discharge
test,
which
shows
excellent
cycle
stability
and
rate
capability.
It
exhibits
initial
discharge
and
charge
capacities
of
979
and
707
mA
h
g
1
at
a
charge/discharge
rate
of
0.7
C,
which
maintain
of
747
and
738
mA
h
g
1
after
100
cycles.
Even
after
60
cycles
at
various
rates
from
0.06
to
14
C,
the
10th
discharge
and
charge
capacities
of
the
NiO-Ni
electrode
can
revert
to
699
and
683
mA
h
g
1
when
lowering
the
charge/discharge
rate
to
0.06
C.
ã
2014
Elsevier
Ltd.
All
rights
reserved.
1.
Introduction
Based
on
a
novel
electrochemical
reaction
mechanism
2y
Li
+
+
2y
e
+
Me
x
O
y
$
x
Me
+
y
Li
2
O,
transition
metal
oxides
(TMOS)
show
theoretical
capacity
as
high
as
500–1000
mA
h
g
1
,
which
endow
them
with
potential
applications
in
lithium
ion
batteries
[1–4].
Among
them,
NiO
anode
has
been
widely
researched
due
to
its
high
theoretical
capacity
of
71 8
mA
h
g
1
,
low
cost,
environment
friendly
and
abundance
[5–9].
However,
the
low
electrical
conductivity
(less
than
10
13
V
1
cm
1
at
room
temperature)
is
a
disadvantage
for
the
application
as
anode
for
lithium
ion
batteries.
In
addition,
the
volume
variation
in
cycling
is
another
challenge
for
NiO,
which
leads
to
the
destruction
of
the
original
morphology,
worsening
the
electrochemical
performance.
Fabri-
cation
of
nano-sized
NiO
on
electric
substrate
is
an
efficient
way
to
improve
the
electronic
conductivity
of
NiO,
which
is
beneficial
to
improve
the
reaction
kinetics
of
NiO.
Meanwhile,
porous
architecture
usually
shows
specific
physical
and
chemical
proper-
ties
owing
to
its
big
surface
area,
which
has
potential
application
in
lithium
ion
batteries,
gas
sensor,
and
catalysis
[10–12].
By
now,
much
work
on
the
preparation
of
porous
architecture
of
NiO
on
electric
substrate
has
been
done,
which
shows
attractive
electro-
chemical
performance
as
anodes
for
lithium
ion
batteries.
For
example,
Wang
et
al.
fabricated
NiO
nanoparticles
on
porous
Ni
foam
via
a
thermal
treatment
method,
which
shows
capacity
retention
higher
than
93%
after
30
cycles
[13].
Varghese
et
al.
deposited
NiO
nanowalls
on
Ni
foil
via
a
plasma
assisted
oxidation
method,
which
exhibits
low
capacity
fading
of
7%
from
the
2nd
to
40th
cycle
[14].
Wang
et
al.
reported
the
preparation
of
NiO
nanocone
on
Ni
foam
via
an
electrochemical
deposition
method
with
subsequent
oxidation
treatment
and
NiO
nanosheet
networks
on
Ni
foam
via
solvothermal
method
with
subsequent
annealing,
which
shows
charge
and
discharge
capacities
higher
that
the
theoretical
capacity
[15,16].
Wu
et
al.
fabricated
NiO
nanoflakes
on
Cu
foam
via
a
chemical
method
and
subsequent
annealing,
which
shows
discharge
capacity
of
720
mA
h
g
1
after
20
cycles
[17].
Ni
et
al.
reported
the
preparation
of
NiO
nanowalls
on
Ni
foam
via
graft
growth
and
in
situ
methods,
which
show
stable
charge
and
discharge
capacities
over
100
cycles
[18,19].
Here
in
this
paper,
we
report
the
preparation
of
novel
foam-like
3D
mesoporous
NiO
on
3D
microporous
Ni
foam
via
a
facile
hydrothermal
etching
and
subsequent
annealing.
The
electro-
chemical
performance
of
the
as-synthesized
NiO-Ni
as
anode
for
lithium
ion
batteries
was
studied,
which
shows
good
cycle
stability
and
rate
capability,
endowing
it
with
potential
application
in
lithium
ion
batteries.
*
Corresponding
author
at:
Key
Laboratory
Magnetism
and
Magnetic
Material
of
Education
Lanzhou
University,
Lanzhou
730000,
China.
Fax:
+86
931
8913554.
E-mail
addresses:
huangp07@lzu.edu.cn,
chxph@bristol.ac.uk
(P.
Huang).
http://dx.doi.org/10.1016/j.materresbull.2014.10.023
0025-5408/ã
2014
Elsevier
Ltd.
All
rights
reserved.
Materials
Research
Bulletin
63
(2015)
112–115
Contents
lists
available
at
ScienceDirect
Materials
Research
Bulletin
journa
l
homepage:
www.elsevier.com/locate/matresbu
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