The statement about the battery which is correct is; a new substance is formed as the battery is used.
Lithium ion batteries have become part of most modern devices such as cell phone, laptop computers and other digital devices.
It shorter time of recharge and good battery life has continued to make it a top choice in the electronics industry.
The equation that describes the chemistry of lithium ion battery is;
LiC6 + CoO2 ⇄ C6 + LiCoO2
The reaction goes towards right hand side when the battery is in use and towards the left hand side when that battery is recharging.
Hence, from the equation, we can see that a new substance, LiCoO2 is formed when the battery is in use.
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