Lithium Ion Batteries

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Lithium Ion Batteries

By Swasthik


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A lithium-ion battery or Li-ion battery is a type of rechargeable battery. Lithium-ion batteries are commonly used for portable electronics and electric vehicles and are growing in popularity for military and aerospace applications.[9] A prototype Li-ion battery was developed by Akira Yoshino in 1985



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Where Li-ion batteries are used?

These Batteries are widely used in Automobiles,handheld electronics etc.

Cell phones




Cell phones


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GOING ELECTRIC A forecast suggests that by 2035, more than half of new passenger vehicles sold worldwide will be electric, even without further policies to promote switching. 40 E z Internal combustion 2020 Hybrid 2025 • Fuel cell Plug-in hybrid 100 80 60 20 o 2015 2030 Battery electric 2035 2040

Day by day,number of E- Vehicals are increasing. Li-ion batteries are used in these vehicals . Li-ion cells are constituted together to form battery. 16 such type of batteries are placed in an E- car. For example, TESLA

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8,000 • 7,000 6,000 • 5,000 • 4,000 • 3,000 • 2000 1,000 • o 1991 $000 1996 Jaae 2001 sool 2006 sooe 2011 sou 2016 enature cougtr1LG sole

The Li-ion price got drop down from 1991. The price was about 7900 US$ per Kilo-watt hour. Current price in 2021 is 125 US$. According to the statatics , Its said that in 2033 the would be nearly 101 US$.

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How it works?



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When the lithium-ion battery in your mobile phone is powering it, positively charged lithium ions (Li+) move from the negative anode to the positive cathode. They do this by moving through the electrolyte until they reach the positive electrode. There, they are deposited. The electrons, on the other hand, move from the anode to the cathode.


DISCHARGING CATHODE ANODE Lithium ions the cathode and anode Talk

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What is the chemistry involved in lithium-ion batteries?

Inside a lithium-ion battery, oxidation-reduction (Redox) reactions take place. Reduction takes place at the cathode. There, cobalt oxide combines with lithium ions to form lithium-cobalt oxide (LiCoO2). The half-reaction is: CoO2 + Li+ + e- → LiCoO2 Oxidation takes place at the anode. There, the graphite intercalation compound LiC6 forms graphite (C6) and lithium ions. The half-reaction is: LiC6 → C6 + Li+ + e- Here is the full reaction (left to right = discharging, right to left = charging): LiC6 + CoO2 ⇄ C6 + LiCoO2


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Are there any risks with using lithium-ion batteries?

While these batteries are pretty impressive, they do have their downsides. The biggest complaint is that they wear out fairly quickly whether you use them or not. A typical lithium-ion battery will last about 2-3 years before it has to be replaced. That can get expensive! The production and disposal of lithium-ion batteries also has a big impact on the environment, so the longer those batteries can last the better. As you learned, lithium is extremely reactive. When manufacturers make lithium-ion batteries, they have to take certain precautions so that the batteries are safe to use. However, you may have heard of some electronics, such as laptops or cell phones, bursting into flames because of their batteries. While this might be a good excuse for not handing in your English essay on time, it’s a pretty dangerous situation. For safety reasons, lithium-ion batteries include a separator. This prevents the electrodes of the battery’s cells from touching each other. But if this separator gets ripped or damaged, the electrodes can touch. This can cause a huge build-up of heat. If this build-up of heat produces a spark, the highly flammable electrolyte can catch on fire. Once there are flames in one cell, they can quickly spread to others. And before you know it, your laptop is a pool of melted plastic. A build-up of heat can also cause the pressure in your laptop to rise very quickly and BOOM!