20.109(F09): Mod 3 Day 4 Battery assembly

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20.109(F09): Laboratory Fundamentals of Biological Engineering

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Battery Assembly

Introduction

Protocols

  1. Measure the mass of powder and add to a clean agate mortar, determine the mass of Super P and PTFE to add based on this mass.
  2. Measure out Super P and add to mortar. Do not add PTFE yet!
  3. Grind thoroughly with mortar and pestle for about 15 minutes.
  4. Add PTFE and mix together, use the pestle to press the mixture into a flat sheet that is all one piece.
  5. Transfer to a stainless steel plate and roll out the electrode to form a uniform electrode.
  6. Once rolled, transfer to the stainless steel cutting plate and use a circle cutter to make an electrode.
  7. Measure mass of electrode and determine the theoretical capacity of the electrode. Co3O4 has a theoretical capacity of ~890mAh/g, FePO4•H2O has a capacity of 143 mAh/g (milli Amp hours per gram).

For Next Time

Reagents

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