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Triton X-100

Triton X-100

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Triton X-100

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  1. Triton X-100

  2. Carbon Nanotubes • Elicarb • Dry - MWCNT • AQ – MWCNT • Dry – SWCNT • AQ - SWCNT

  3. Vacuum Pump • Electric pump • Capable of pulling -80kPa constantly • Simple switch on • Wore out • Manual pump • Capable of sustaining -80kPa once reached • Took 2 minutes of hand pumping • Good workout

  4. Vacuum Beaker Setup • Funnel holds CNT liquid • Pressure differential pulls liquid through filter • Creates interwoven CNT mat once dried • Can cause peeling

  5. Thermal Evaporated Aluminum • Better contact between electrode and coin cell case • Done in the Baker cleanroom • Deposited ~300nm • Full evap. takes ~2hrs

  6. Room Temperature Ionic Liquid • Cut filter into 13mm circles • Applied 60µL-80µL • RTIL’s Labeled by number (5, 6, 7, 8, 9, 11, 12) 47mm 13mm

  7. 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

  8. Coin Cell Crimper • Hohsen coin cell closing tool • Manual press • Bends corners over gasket • Approx. 20/hr

  9. Finished Product • Width = 3.28 • Diameter = 20mm • Approx. Weight = 3.657g

  10. Testing Structure MWCNT AQ/Dry SWCNT AQ/DRY Nylon 35mg 70mg 105mg Seperator Type CNT Amount CNT Type 3 1 4 Aluminum RTIL Type 1st 2nd 3rd Iteration Yes/No 5, 6, 7, 8, 9, 11, 12 2 3 7 Combonationof Possibilities: 1 · 4 · 3 · 2 · 7 · 3 = 504 coin cells!!

  11. Testing • Solartron • Electrochemical interface tests • Impedance/Gain-Phase Analyzer • Tests • Constant Current • Constant Voltage • Impedance Spectroscopy

  12. Constant Current • Solatron supplies constant current (I = 0.001A) • Senses output voltage and graphs • Completely automated process

  13. Impedance Spectroscopy • Applies a voltage frequency scan • Senses gain and phase from supercap • Plots real, imaginary and amplitude

  14. Equivalent Circuit Electrolyte Bulk Properties Electrode Properties

  15. Data Analysis • Specific Energy • E = (1/2)CV2 • Specific Energy = E/mass • Specific Power • P = I2Rs • Specific Power = P/mass

  16. Ragone Plot

  17. RTIL Ragone Plot

  18. Possible Areas to research next semester • Separator efficiency • Other forms of fabrication