研究生开题报告PPT模板-碳材料方向
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High thermal resistance
5
Materials Science and Engineering R, 2010, 70, 1–28
Carbon Precusors
Capacitances
Pseudoucapacitors Polypyrrole
Cycle Life
6
ACS Nano, 2014, 5, 4720-4729.
Pyrrole, FeCl3
Water, 25℃ 24h
Remove Polystyrene Carbonization
PPy =
KOH activation (1: 8)
11
Morphology of A-HCSs
12
Intensity / a.u.
Intensity / a.u. Intensity / a.u.
Synthesis of hollow carbon spheres based on polypyrrole and their application in supercapacitors
Supervisor: Prof. Yang and Prof . Tu College of Chemistry, Chemical Engineering and
Chemical composition of A-HCSs
a
Pyrrole 80.7%
C 1s
A-HCSs
O 1s N 1s
HCSs
PPy@PS
S 2p
b A-PPy@PS-X
107.2% 80.4% 53.6% 26.8% 13.4%
1000 800 600 400 200 0
1000 800 600 400 200 0
Thank You for your attention
18
1
PPy@PS-80.4%
0
0.6
HCSs-80.4%
3
AHCSs-13.4%
2
0.4
AHCSs-26.8%
1
AHCSs-53.6%
AHCSs-80.4%
0 3
0.2
2
1
0.0
0
50
100
150
200
1
Pore Width (nm)
A-HCSs-107.2% A-HCSs-80.4% A-HCSs-53.6% A-HCSs-26.8% A-HCSs-13.4 %
Differential pore volume (cm3 g-1)
750
a
600
450
300
13.4 % 26.8 % 53.6 % 80.4 % 107.2 %
b A-HCSs-X
3
2
1
0 3
2
150
1
0
0
3
0.0 0.2 0.4 0.6 0.8 1.0
2
c
Relative pressure (P / P ) 0
2. Seek more applications of obtained carbon spheres(gas adsorption, photothermal and package other active materials into void space).
17
Thanks for Prof. Yang, Prof. Tu for their considerate guidance. Thanks for all my classmates for their kind help. Thanks for teachers and students listening to my opening report.
- Z'' / ohm
- Z'' / ohm
Capacitance / F g-1 Retention / %
a7
6 A-HCSs-X
5
4
1.0
3
0.5
13.4 % 26.8 % 53.6 % 80.4 % 107.2 %
b 400
300 200
2
0.0
1
-0.5
0.4 0.6 0.8 1.0
0
Z' / ohm
Hierarchical Pores Design
7
J. Am. Chem. Soc. 2015. DOI: 10.1021/jacs.5b11955
Hierarchical Pores Design (macropores)
Carbon precursor coating
Carbonization
Discharged
Charged
High surface areas
Pseudoucapacitors
Electrolyte
H+,OH-,or Li+
electrode material
Heteroa -toms doping
ions transmi -ssion
4
Nature materials, 2005, 4, 366-377.
Hollow Carbon Spheres
Regular Good geometry liquidity
Hollow carbon spheres
Controlla -ble size
Inner cavity
High strength
Abundant porous structures Tunable porosity Light weight
Materials Science Soochow University 2016-09-06
1
Contents
1. Introduction 2. Objective 3. Currnt work 4. Future work
2
Supercapacitors
Clean
High power density
-0.005
-0.010
-0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 Potential / V
b 570
540 A-HCSs
@ 0.2 A g-1
510
480
450
420
390
360 0 20 40 60 80 100 120 Pyrrole weight ratio
15
Electrochemistry measurements
10 14 Pore Width (nm)
Electrochemistry measurements
Current / A
Capacitance F g-1
a 0.015 A-HCSs-X 0.010
0.005
0.000
@ 2mv/s
13.4 % 26.8 % 53.6 % 80.4 % 107.2 %
Etching
Template
Core-caron shell
h-NCS
PS
Dircet carbonize
-tion
Controlla -ble
particle size
Good dispersity
8
Nature Mater. 2015. DOI: 10.1038/NMAT4317
a
MO FeCl3
Fast charge/di-
scharge
Supercapacitors
Low cost
Long cycle life
High charge/discha -rge efficency
3
Nature, 2012, 488, 294-303.
Electrode Materials
Electrical doule-layer capacitor
Objectives
Treatment temperatu-
re
Positive/ne -gative charged PS
PS particle size
Capacitance
High activation
ratio
Overlayer thickness
10
Experiment scheme
Polystyrene
01234567 Z' / ohm
100
0 0
100
80
A-HCSs-80.4 %
60
40
20
0 2000 4000 6000 8000 10000
Cycle number
16
Future work
1. Continue to synthesize hollow carbon spheres with different conditions.
b
Hierarchical Pores Design (micro-and meso- pores)
Pyrrole
Carbonization
Activation with KOH
High activation
ratio ?
9
Journal of Power Sources. 2014, 247, 660-666.
Binding energy / ev
ห้องสมุดไป่ตู้
Binding energy / ev
c A-PPy@PS-80.4%
295
290
285
280
13
Binding energy / ev
Pore structures of A-HCSs
Differential pore Volume (cm3 g -1) Volume Adsorbed (cm-3 g-1,STP)
5
Materials Science and Engineering R, 2010, 70, 1–28
Carbon Precusors
Capacitances
Pseudoucapacitors Polypyrrole
Cycle Life
6
ACS Nano, 2014, 5, 4720-4729.
Pyrrole, FeCl3
Water, 25℃ 24h
Remove Polystyrene Carbonization
PPy =
KOH activation (1: 8)
11
Morphology of A-HCSs
12
Intensity / a.u.
Intensity / a.u. Intensity / a.u.
Synthesis of hollow carbon spheres based on polypyrrole and their application in supercapacitors
Supervisor: Prof. Yang and Prof . Tu College of Chemistry, Chemical Engineering and
Chemical composition of A-HCSs
a
Pyrrole 80.7%
C 1s
A-HCSs
O 1s N 1s
HCSs
PPy@PS
S 2p
b A-PPy@PS-X
107.2% 80.4% 53.6% 26.8% 13.4%
1000 800 600 400 200 0
1000 800 600 400 200 0
Thank You for your attention
18
1
PPy@PS-80.4%
0
0.6
HCSs-80.4%
3
AHCSs-13.4%
2
0.4
AHCSs-26.8%
1
AHCSs-53.6%
AHCSs-80.4%
0 3
0.2
2
1
0.0
0
50
100
150
200
1
Pore Width (nm)
A-HCSs-107.2% A-HCSs-80.4% A-HCSs-53.6% A-HCSs-26.8% A-HCSs-13.4 %
Differential pore volume (cm3 g-1)
750
a
600
450
300
13.4 % 26.8 % 53.6 % 80.4 % 107.2 %
b A-HCSs-X
3
2
1
0 3
2
150
1
0
0
3
0.0 0.2 0.4 0.6 0.8 1.0
2
c
Relative pressure (P / P ) 0
2. Seek more applications of obtained carbon spheres(gas adsorption, photothermal and package other active materials into void space).
17
Thanks for Prof. Yang, Prof. Tu for their considerate guidance. Thanks for all my classmates for their kind help. Thanks for teachers and students listening to my opening report.
- Z'' / ohm
- Z'' / ohm
Capacitance / F g-1 Retention / %
a7
6 A-HCSs-X
5
4
1.0
3
0.5
13.4 % 26.8 % 53.6 % 80.4 % 107.2 %
b 400
300 200
2
0.0
1
-0.5
0.4 0.6 0.8 1.0
0
Z' / ohm
Hierarchical Pores Design
7
J. Am. Chem. Soc. 2015. DOI: 10.1021/jacs.5b11955
Hierarchical Pores Design (macropores)
Carbon precursor coating
Carbonization
Discharged
Charged
High surface areas
Pseudoucapacitors
Electrolyte
H+,OH-,or Li+
electrode material
Heteroa -toms doping
ions transmi -ssion
4
Nature materials, 2005, 4, 366-377.
Hollow Carbon Spheres
Regular Good geometry liquidity
Hollow carbon spheres
Controlla -ble size
Inner cavity
High strength
Abundant porous structures Tunable porosity Light weight
Materials Science Soochow University 2016-09-06
1
Contents
1. Introduction 2. Objective 3. Currnt work 4. Future work
2
Supercapacitors
Clean
High power density
-0.005
-0.010
-0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 Potential / V
b 570
540 A-HCSs
@ 0.2 A g-1
510
480
450
420
390
360 0 20 40 60 80 100 120 Pyrrole weight ratio
15
Electrochemistry measurements
10 14 Pore Width (nm)
Electrochemistry measurements
Current / A
Capacitance F g-1
a 0.015 A-HCSs-X 0.010
0.005
0.000
@ 2mv/s
13.4 % 26.8 % 53.6 % 80.4 % 107.2 %
Etching
Template
Core-caron shell
h-NCS
PS
Dircet carbonize
-tion
Controlla -ble
particle size
Good dispersity
8
Nature Mater. 2015. DOI: 10.1038/NMAT4317
a
MO FeCl3
Fast charge/di-
scharge
Supercapacitors
Low cost
Long cycle life
High charge/discha -rge efficency
3
Nature, 2012, 488, 294-303.
Electrode Materials
Electrical doule-layer capacitor
Objectives
Treatment temperatu-
re
Positive/ne -gative charged PS
PS particle size
Capacitance
High activation
ratio
Overlayer thickness
10
Experiment scheme
Polystyrene
01234567 Z' / ohm
100
0 0
100
80
A-HCSs-80.4 %
60
40
20
0 2000 4000 6000 8000 10000
Cycle number
16
Future work
1. Continue to synthesize hollow carbon spheres with different conditions.
b
Hierarchical Pores Design (micro-and meso- pores)
Pyrrole
Carbonization
Activation with KOH
High activation
ratio ?
9
Journal of Power Sources. 2014, 247, 660-666.
Binding energy / ev
ห้องสมุดไป่ตู้
Binding energy / ev
c A-PPy@PS-80.4%
295
290
285
280
13
Binding energy / ev
Pore structures of A-HCSs
Differential pore Volume (cm3 g -1) Volume Adsorbed (cm-3 g-1,STP)