Download Supercapacitor Project

Triton X-100
GTRI_B-‹#›
Carbon Nanotubes
• Elicarb
• Dry - MWCNT
• AQ – MWCNT
• Dry – SWCNT
• AQ - SWCNT
GTRI_B-‹#›
Vacuum Pump
• Manual
Electric pump
pump
• Capable of sustaining
-80kPa
pulling -80kPa
once
reached
constantly
• Took
2 minutes
of hand
Simple
switch on
pumping
• Wore out
• Good workout
GTRI_B-‹#›
Vacuum Beaker Setup
• Funnel holds CNT liquid
• Pressure differential pulls liquid
through filter
• Creates interwoven CNT mat once
dried
• Can cause peeling
GTRI_B-‹#›
Thermal Evaporated Aluminum
• Better contact between
electrode and coin cell
case
• Done in the Baker
cleanroom
• Deposited ~300nm
• Full evap. takes ~2hrs
GTRI_B-‹#›
Room Temperature Ionic Liquid
• Cut filter into
13mm circles
47mm
• Applied 60µL-
80µL
• RTIL’s Labeled
13mm
by number (5,
6, 7, 8, 9, 11,
12)
GTRI_B-‹#›
Coin Cell
• Coin cell
• Two wave springs
for greater pressure
• Spacer disks in
place to allow wave
spring stability
• Contents on bottom
for ease of
fabrication
GTRI_B-‹#›
Coin Cell Crimper
• Hohsen coin cell
closing tool
• Manual press
• Bends corners
over gasket
• Approx. 20/hr
GTRI_B-‹#›
Finished Product
• Width = 3.28
• Diameter = 20mm
• Approx. Weight = 3.657g
GTRI_B-‹#›
Testing Structure
Seperator
NylonType
1
Aluminum
Yes/No
2
MWCNT AQ/Dry
CNT Type
SWCNT AQ/DRY
4
35mg
70mg
105mg
CNT
Amount
Type
5, 6, RTIL
7, 8, 9,
11, 12
1stIteration
2nd 3rd
3
3
7
Combonation of Possibilities:
1 · 4 · 3 · 2 · 7 · 3 = 504 coin
cells!!
GTRI_B-‹#›
Testing
• Solartron
• Electrochemical interface tests
• Impedance/Gain-Phase
Analyzer
• Tests
• Constant Current
• Constant Voltage
• Impedance Spectroscopy
GTRI_B-‹#›
Constant Current
• Solatron supplies constant current (I = 0.001A)
• Senses output voltage and graphs
• Completely automated
process
GTRI_B-‹#›
Impedance Spectroscopy
• Applies a voltage frequency scan
• Senses gain and phase from supercap
• Plots real, imaginary and amplitude
GTRI_B-‹#›
Equivalent Circuit
Electrolyte Bulk
Properties
Electrode
Properties
GTRI_B-‹#›
Data Analysis
• Specific Energy
• E = (1/2)CV2
• Specific Energy = E/mass
• Specific Power
• P = I2Rs
• Specific Power = P/mass
GTRI_B-‹#›
Ragone Plot
Ragone Plot NYA1N
Ragone Plot NYA2N
90
12
70
60
50
40
Series1
30
20
10
0
Specific Power (W/kg)
Specific Power (W/kg)
80
10
8
6
Series1
4
2
0
0
10000
20000
Specific Energy (Wh/kg)
30000
0
5000
10000 15000 20000 25000
Specific Energy (Wh/kg)
GTRI_B-‹#›
30000
Ragone Plot NYC2N
40
30
35
25
20
15
Series1
10
5
0
Specific Power (W/kg)
35
30
25
20
15
Series1
10
5
0
0
10000
20000
30000
Specific Energy (Wh/kg)
40000
0
10000
20000 30000 40000 50000
Specific Energy (Wh/kg)
Ragone Plot NYC3N
14
Specific Power (W/kg)
Specific Power (W/kg)
Ragone Plot NYC1N
12
10
8
6
Series1
4
2
0
0
10000
20000
30000
Specific Energy (Wh/kg)
40000
GTRI_B-‹#›
60000
45
40
35
30
25
20
15
10
5
0
Ragone Plot NYA2Y
Series1
0
20000
40000 60000 80000 100000 120000
Specific Energy (Wh/kg)
Specific Power (W/kg)
Specific Power (W/kg)
Ragone Plot NYA1Y
18
16
14
12
10
8
6
4
2
0
Series1
0
10000
20000 30000 40000 50000
Specific Energy (Wh/kg)
GTRI_B-‹#›
60000
Ragone Plot NYC1Y
Ragone Plot NYC2Y
30
20
15
Series1
10
5
0
0
10000
20000
Axis Title
30000
40000
200
180
160
140
120
100
80
60
40
20
0
Ragone Plot
0
200000 400000 600000 800000 1000000
Specific Energy (Wh/kg)
Ragone Plot NYC3Y
35
Specific Power (W/kg)
Axis Title
25
Specific Power (W/kg)
35
30
25
20
15
Series1
10
5
0
0
10000
20000
30000
Specific Energy (Wh/kg)
40000
GTRI_B-‹#›
Ragone No Aluminum
300
250
Specific Power
NY A 1 N
200
NY A 2 N
150
NY C 1 N
100
NY C 2 N
NY C 3 N
50
Battery
0
0
-50
5000
10000
15000
20000
25000
PC10
30000
Specific Energy
Ragone With Aluminum
300
250
NY A 1 Y
Specific Power
-5000
200
NY A 2 Y
150
NY C 1 Y
100
NY C 2 Y
NY C 3 Y
50
Battery
0
-5000
0
-50
5000
10000
15000
Specific Energy
GTRI_B-‹#›
20000
25000
30000
PC10
Ragone No Aluminum
NY A 1 N
10000
NY A 2 N
1000
NY C 1 N
NY C 2 N
100
NY C 3 N
10
Battery
1
PC10
1
100
10000
1000000
Specific Energy
100000000
Ragone With Aluminum
100000
Specific Power
Specific Power
100000
NY A 1 Y
10000
NY A 2 Y
1000
NY C 1 Y
NY C 2 Y
100
NY C 3 Y
10
Battery
1
PC10
1
100
10000
1000000 100000000
Specific Energy
GTRI_B-‹#›
RTIL Ragone Plot
GTRI_B-‹#›
Possible Areas to research next
semester
• Separator efficiency
• Other forms of fabrication
GTRI_B-‹#›