Q&A activity
Teacher's information is at the bottom of the page.
This Q&A section aims to consolidate the lower secondary college chemistry and modern technology information delivers at the Symposium on 4th May 2020.
Why do scientists invent Sodium battery?
Refer to the Symposium video.
What are the advantages of Li-ion batteries?
Refer to the Symposium video.
Try to explain why Lithium battery has a higher energy density than Sodium battery from Periodic table?
Refer to Periodic Table and understand the concept of energy density.
What are the disadvantages of Lithium battery?
Refer to the Symposium video.
What are some of the benefits of using Na-ion batteries?
Refer to the Symposium video.
What can be some of the drawbacks for Na-ion batteries?
Refer to the Symposium video.
Why even if Sodium ion batteries are low in energy density, they can still be widely used in industry? E.g. Tesla Powerwall, power grid
Refer to the Symposium video and think about the industry application in comparison to the size of the battery.
Why is it necessary to add a separator between Anode and Cathode in Sodium-ion battery?
Refer to the Symposium video and think about short circuit theory.
How to distinguish from anode with cathode in a generic battery?
Refer to chemistry text book.
Where does Na+ move when the Sodium battery is being charged?
Refer to the Symposium video and try to reason the fundamental mechanism behind it in chemistry.
What happens to Na+ once the battery is fully charged? And what happens to Na+ when the battery is discharging?
Refer to the Symposium video and try to reason the fundamental mechanism behind it in chemistry.
What are some of the advantages of using organic ionic plastic crystals (OIPC) electrolyte?
Refer to the Symposium video.
What is the fundamental mechanism that contributes to advantages of OIPC?
Refer to the Symposium video.
What is the benefit of using OIPC in commercial context?
Refer to the Symposium video.
What are some of the key differences between OIPC and ionic liquid electrolyte? Try to explain it with Coulomb’s Law.
Refer to the Symposium video.
What contribute to the pliable characteristics of OIPC?
Refer to the Symposium video.
How electrochemical stability in OIPC reflect on industry use?
Refer to the Symposium video.
Why is it important to have slip-lane property as in OIPC for
commercial use?
Refer to the Symposium video and think what happens if there is more space for electrons to move.
Explain graphite and hard carbon properties by using fundamental
chemistry.
Refer to chemistry text book and the Symposium video.