Lesson Summary

 

     In this lesson students will lean and hands on to make biological batteries on their own. They will follow the instruction on each step and examined by teacher and self-examine with each other to ensure each step is correct and well done.  Students will make 3 batteries and monitored by teacher to ensure each step is right and the batteries are made right and they are at working capacity and functional normal.  Then students will use multimeter to record the changing of the voltage and current of each battery over the time to collect real world data and experience the real power supply performance of biological battery by themselves. 

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Essential Questions: 

1. How is the performance in voltage and current change produced by the battery? 

2. What is the maximum current and voltage?Are they stable over time?

3. Does each battery cell perform similarly to the other battery cells?

4. What are some possible ways the voltage and current output of the battery can be improved?

5. What are the Do's & Don'ts of improving the battery voltage and current?

6. How does the material quality (especially cathode electrode) impact on the battery performance? 

7. What will happen if the cathode electrode has very high resistance?​​

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Learning Objectives: 

  Students will be able to...

• Measure and test the resistance of all parts of the electrodes to ensure the resistance is consistent and maintain integrity with good quality.

• Learn to use a multimeter to measure the resistance of a material, focusing on learning to measure the resistance of the cathode electrode.

• Practice multimeter functions by measuring different regions of the electrode and record the data. 

• Learn to use a digital caliper to measure dimensions of the components

• Insert the electrodes into the cell with proper positioning to ensure the integrity of the electrode during the process.

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• Learn to properly use the multimeter to measure resistance and voltage

• Measure, cut, and strip the electric wires to ensure quality of the function

• Engage in discussion about the importance of following through with directions

• Distinguish how each component and their performance impacts the overall voltage and current of the battery.

• Learn to measure, collect, and record data, then use the data to interpret different simple energy calculations.

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Other Materials ​

(Presentation slides, photos and technology demos are upon request to Bioechem.) 

 

Company Videos​

Cleantech STEM kit:

https://youtube.com/watch?v=GIrhokeM1hc&feature=shared

Youtube Biological Battery STEM education kit training video

https://youtu.be/acsxaSrx2GI

Biological Microbattery:

https://www.youtube.com/watch?v=DLBcWQCEWnw