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TRANSCRIPT
S1
Supporting Information
Carbon-Anchored MnO Nanosheets as an Anode for High-Rate and Long-Life Lithium Ion Batteries
Ying Xiao, and Minhua Cao*
[*] Prof. M. H. Cao,
Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key
Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Department of
Chemistry, Beijing Institute of Technology, Beijing 100081, P. R. China.
E-mail: [email protected]
S2
Figure S1. Photographs of commercial F127 (a) and freeze-dried F127 (b). (c) TEM
image and photograph of the carbon sample obtained by carbonizing freeze-dried
F127. (d) SEM image of the carbon sample obtained by carbonizing the commercial
F127.
Figure S2. TG curves of the as-formed MnO/C hybrids with different usages of
Pluronic F127. During the whole test process, the MnO phase was oxidized into
Mn2O3, while the carbon was completely removed in the air. Therefore, for the
MnO/C hybrids with Pluronic F127 usages of 0.3 g, 0.5 g, 1.0 g and 1.5 g, the carbon
contents are calculated to be 15.1%, 24.8%, 38.2%, and 50.0%, respectively.
100 200 300 400 500 600 7000
20
40
60
80
100
Weight loss (%)
Temperature (°°°°C)
0.3 g F127
0.5 g F127
1.0 g F127
1.5 g F127
Calcining
(b)
Freeze-drying
(d)
(c)
F127 (a)
S4
Figure S5. (a) The cycle performance of pure carbon at a current density of 0.3 A g-1
.
(b) The rate performance of pure carbon at various current densities.
Figure S6. Discharge-charge profiles of the typical sample cycled at current densities
of 0.3, 0.6, 0.9, 1.5, 3, 5 and 10 A g-1
, respectively.
0 20 40 60 80 1000
100
200
300
400
500
600
0.3 A g-1
Capacity (mAh g
-1)
Cycle number0 20 40 60 80 100 120
0
100
200
300
400
500
600
0.3 A g-1
4108
5
321.51.2
0.9
0.6
0.3
Capacity (mAh g
-1)
Cycle number
(a) (b)
(d)
0 200 400 600 800 1000 12000.0
0.5
1.0
1.5
2.0
2.5
3.0
Voltage (V
)
Capacity (mAh g-1)
0.3 A g-1
0.6 A g-1
0.9 A g-1
1.5 A g-1
3 A g-1
5 A g-1
10 A g-1
S5
Table S1. The comparison of the capacity of present work with reported MnO-based
materials.
Samples
aCurrent
density
(mA g-1
)
bCycle
number
cCapacity
(mAh g-1
) Ref.
MnO/graphene hybrid 200 (2000) 150 (400) 2014 (843) s1
MnO@C nanocomposite 100 80 ca.800 s2
MnO/carbon fibers 100 (1000) 100 (200) 1082 (575) s3
3D-MnO/CNS 100 (5000) 500 (500) 1332 (567) s4
MnO@C nanoplates 200 30 563 s5
Mesoporous MnO/C networks 200 (1500) 200 (200) 1224 (731) s6
Carbon-encapsulated MnO/N-C 1000 700 1268 s7
N-doped MnO/graphene 100 90 772 s8
Hollow porous MnO/C spheres 100 50 702 s9
MnO/C-N hybrid 500 (5000) 170 (400) 1699 (908) s10
Hierarchical nanostructured MnO 98.3 200 782 s11
Porous C–MnO disks 100 140 1044 s12
MnO/Co 100 20 <500 s13
MnO/Co nanocomposites 100 20 <400 s14
MnO/C core shell rods 200 40 about 600 s15
Core–Shell MnO@Carbon wires 500 200 801 s16
MnO/C sheets 300 (5000) 100 (2000) 1449 (1467) This work
Note: The current density values in brackets in row a correspond to the cycles in brackets in row b and
the capacity values in brackets in row c.
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S6
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