Lithium-Ion Battery Diagram Analysis

Jun 12, 2019   Pageview:28

Lithium-ion batteries also are known as Li-ion battery and it is the rechargeable type of batteries. The very first battery was founded by chemist M Stanley Whittingham in the year 1970s. These types of batteries are commonly used in portable electronic devices and electric vehicles. Nowadays Li-ion battery is gaining popularity for using in military and aerospace applications. In this type of battery, ions move from the negative electrode to positive at the time of discharge. 


In a Lithium-Ion Battery, it uses the intercalated lithium compound when we compared with metallic lithium batteries. The battery has low self-discharge with a high density of energy.  The advanced feature of the battery is that it does not affect the memory as it does not contain memory. Lithium is one of the lightest metals in all and has the greatest potential of electrochemical. 

With this feature, it provides the largest specific energy at per weight. It can also produce extraordinary high energy density. Li-ion is the universal battery acceptable for use in many products. After all these features new research is still going on to make it safer and equipped with the best features. The nominal cell voltage of the battery is 3.6 V which is sufficient for powering cell phones and digital cameras. 

How does lithium-ion battery circuit work?

All batteries work according to their cells and electrolytes present in them. We all know that lithium-ion batteries are rechargeable as they are made of cells.  

Like other batteries, Li-ion batteries can be get recharged and these were made of one or more than one power generating compartments which are known as cells. Each cell presents in the battery have three components, the first one is a positive electrode which is connected with the battery positive terminal, the second one is a negative electrode as it is connected with the negative terminal, and another is electrolyte a chemical which is present in between of both electrode. The positive electrode is generally made of the chemical compound known as lithium cobalt oxide (LiCoO2) but in the new one battery, it uses lithium iron phosphate (LiFePO4). The negative electrode made from the carbon (graphite) but the electrolyte has different aspects and depends on the types of battery with another one. 

All types of lithium-ion batteries work in wide ranges of in different ways. When batteries get charged the lithium cobalt oxide and positive electrode provides the same amount of lithium ions, it moves through the electrolyte towards the negative electrode and then remains the same. After this battery takes in and stores energy during this process. 

At the time of discharging the ions moves back towards the positive electrode and it helps in producing energy which provides power to the battery. It means in both cases electrons move in opposite directions of ions. The electrons present in it do not flow through electrolyte as it is an effective barrier for electrons.

 With the above discussion, it came to know that ions and electrons are interconnected processes. In the case, your battery gets fully discharged then ions stop moving through electrolyte and electrons stops moving through outer circuit then you can lose power. In the same, if you switch off the battery then electrons stops and flow of ions also get stops. 

Lithium ions batteries are built with electronic controllers which help in regulating their charging and discharging. It also helps in preventing overheating which can explode batteries. 


Pros and cons of a lithium-ion battery diagram

Energy Density

Lithium batteries have lots of features in a small package as it makes the battery ideal. With this feature, it becomes perfect for mobile devices, laptop computer, and other types of Android devices. A battery having high energy density operates longer between charges which help in consuming more power. Providing higher power density makes lithium-ion battery very useful for electronic devices.

Light Weight

The most preferable advantage of lithium battery is the biggest edge over other rechargeable batteries. The battery has less weight and volume and it helps in storing much energy for hours in a single kilogram. It has increased the capacity of the lithium-ion battery. If we talk about battery then it is the champion of all batteries. 

Low Self-Discharge Rate

The lithium-ion batteries almost lose 5 % of batteries as it makes the perfect choice for travelers. The batteries can hold at least 40 % of the charger and but other batteries cut downs the overall life span of the battery. With the advanced technology invention, Li-ion batteries can pack the functions after the continued storage at room temperature. 

Cons of the Lithium Ion Batteries


It is one of the major disadvantages of the battery as it cost more expensive than other batteries. For making battery safe for use it is equipped with protection circuit which helps in limiting the voltages. With the complex manufacturing, it adds cost which makes it expensive. 


One of the major disadvantages of lithium battery has suffered from ageing. It depends on the charge and discharge cycle through which batteries go through. Even when you are not using batteries then also it ages goes down. The batteries have 500 to 1000 cycles of discharge and charge. You use battery very frequently then automatically its age gets slower at high rate. Then in this condition, you have to replace the battery and sometimes it starts producing lots of issues. 


Protection Required

While using lithium-ion batteries it needs to be protected as cells and batteries of lithium ion are not robust like other types of rechargeable batteries. It makes to be required of protection at the time of charged and discharged. With this, you have to maintain the current within the limits. But with the modern batteries, this feature has in-built within the batteries which maintains its limit. 

With these features of lithium-ion batteries, the use of a battery has been growing at high speed. It has become a go-to power source for every portable device.