Lithium-Ion Batteries


Lithium-ion batteries are a tool designed to store electrical energy, which uses a lithium salt particle as an electrolyte, which is responsible for obtaining the ions required to generate a reversible electrochemical reaction, which occurs between an anode and a cathode, these batteries are also known by the name of Li-ion.

The idea of ​​this device was proposed by MS Whittingham who had the idea to use lithium metal and titanium sulfide as kind of electrodes. This served as the basis for Akira Yoshino in 1985 to design a prototype in which he used carbon composite material where lithium ion and lithium cobalt electrodes could be inserted. By using materials that did not have metallic lithium, the safety to be able to use them was greatly increased compared to that if they were used, which promoted their large-scale manufacture, thus originating Li.ion batteries.

The use of these devices today has become very important due to the great advantages they bring, since thanks to them large amounts of energy can be stored, each one providing around 3.7 volts, the same amount that generate three Ni-Cd type batteries, the weight is another advantage, since they are quite light and smaller compared to Ni-MH type batteries, all this without affecting their energy storage capacity. It is very common for batteries to have a self-discharge percentage, however, Lithium-Ion batteries decrease that percentage significantly, making them more practical, in addition to that during use, as the voltage is discharged, it does not vary from significantly, which avoids the use of circuits that regulate the flow of energy.

However, and despite the great uses and advantages that this tool represents, the system is not entirely perfect, since it has some flaws such as the number of limited recharges that ranges between 400 and 1000 charges, which is a delay compared to the Ni-Cd type, so they are considered as consumables. Another element against them is their cost, since compared to other batteries their manufacture is expensive, and finally their low cold-working performance is found.