SSCE VCE Chemistry Redox Reactions: The lithium-ion battery is a sec

Question

The lithium-ion battery is a secondary cell that is now widely used in portable electronic devices:
In these batteries, lithium ions, Li+, move through a special non-aqueous electrolyte between the two electrodes. The batteries are housed in sealed containers to ensure that no moisture can enter them.
Both electrodes are made up of materials that allow the lithium ions to move into and out of their structures. The anode consists of LiC6, where lithium is embedded in the graphite structure. Lithium cobalt oxide, LiCoO2, is commonly used as the material in the cathode. The reaction at the cathode is quite complex. When the cell discharges, Li+ ions move out of the anode and enter the cathode.
During discharge, the half-cell reaction at the anode is:
LiC6 → Li+ + e- + C6.

The lithium-ion battery is a secondary cell that is now widely used in portable electronic devices: In these batteries, lithium ions, Li+, move through a special non-aqueous electrolyte between the two electrodes - VCE - SSCE Chemistry - Question 8 - 2016 - Paper 1

Worked Solution & Example Answer:The lithium-ion battery is a secondary cell that is now widely used in portable electronic devices: In these batteries, lithium ions, Li+, move through a special non-aqueous electrolyte between the two electrodes - VCE - SSCE Chemistry - Question 8 - 2016 - Paper 1

During discharge, what is the polarity of the graphite electrode?

Write the half-equation for the reaction that occurs at the cathode of a lithium-ion battery when it is recharged.

In a lithium-ion battery, lithium metal must not be in contact with water. Explain why and justify your answer with the use of appropriate equations.

Join the SSCE students using SimpleStudy...