Lithium ion vs Lithium polymer! The limitless debate on batteries among modern users. Today, I,m going to talk about the differences between these battery types.
Li-ion battery technology is the first choice for smartphones and a wide range of other portable gadgets too. However, modern smartphones now commonly feature li-polymer batteries, an alternative for a wide variety of electronic gadgets. This certainly isn’t a fact to overlook, given li-ion occasional run-in with overheating problems.
Think about battery safety and longevity high on customers’ priority, it’s good to know the pros and cons of these two battery technologies. Here’s everything you need to know about Lithium ion vs Lithium polymer batteries.
What is a Li-ion battery?
Li-ion batteries have been utilized for an extremely extensive stretch of time and were and still are the decision of battery for all contraptions. This is because of the way that these batteries are dependable, have an incredible energy thickness, and are similarly modest to create.
Li-ion or Lithium-ion batteries are rechargeable kinds of batteries that are profoundly compact. This is the motivation behind why they are generally utilized for electronic vehicles, for example, aviation applications.
In these batteries, the decidedly charged lithium-ions are conveyed by electrolyte from the anode to the cathode and the other way around. Lithium-particle batteries are exceptionally solid and are extraordinary for life span, these batteries can keep going for around 2-3 years or 300-500 charge cycles.
How do li-ion batteries work?
A rechargeable lithium-ion battery is manufactured with one or more power-generating sections which are called cells. Each cell has basically three components: a positive electrode (connected to the battery’s positive terminal), a negative electrode (connected to the negative terminal), and a chemical called an electrolyte in between them. The positive electrode is typically made from a chemical compound called lithium-cobalt oxide (LiCoO2) or, in newer batteries, from lithium iron phosphate (LiFePO4). The negative electrode is generally made from carbon (graphite) and the electrolyte depends on the type of battery.
All Li-ion batteries work in broadly the same way. When the battery is charging up, the lithium-cobalt oxide, positive electrode gives up some of its lithium ions, which move through the electrolyte to the negative, graphite electrode and remain there. The battery takes in and stores energy during this process. When the battery is discharging, the lithium ions move back across the electrolyte to the positive electrode, producing the energy that runs the battery. In both cases, electrons flow in the opposite direction to the ions around the outer circuit. Electrons do not flow through the electrolyte: it’s effectively an insulating barrier, so far as electrons are concerned.
The movement of ions (through the electrolyte) and electrons (around the external circuit, in the opposite direction) are interconnected processes, and if either stops so does the other. If ions stop moving through the electrolyte because the battery completely discharges, electrons can’t move through the outer circuit either—so you lose your power. Similarly, if you switch off whatever the battery is powering, the flow of electrons stops and so does the flow of ions. The battery essentially stops discharging at a high rate (but it does keep on discharging, at a very slow rate, even with the appliance disconnected).
Unlike simpler batteries, lithium-ion ones have built-in electronic controllers that regulate how they charge and discharge. They prevent the overcharging and overheating that can cause lithium-ion batteries to explode in some circumstances.
Advantage of Lithium-ion battery
As Lithium-ion batteries have been utilized for an exceptionally prolonged stretch of time, the expense of assembling the battery has decreased essentially, and is a lot less expensive to actualize a Li-ion battery for a convenient device as these are promptly accessible and costs substantially less.
2. High-Power Density
When contrasted and other battery types, lithium-ion batteries can store 3 to multiple times more charge contrasted with batteries of comparative size. It makes it viable as well as productive and hearty to use in portable devices.
3. Battery Life
Lithium-ion batteries watch out for last more than the vast majority of the other battery types. They can keep going for around a few years or perhaps more, or around 300-500 charge cycles.
Lithium-ion batteries are easy to keep up and deal with as they don’t need numerous unpredictable cycles for support. Neither much exertion nor much venture is expected to keep up lithium-particle batteries.
5. Constant voltage
Another advantage of lithium-ion batteries is that they are fit for keeping a consistent voltage. Regardless of how weighty the heap or use is, a Li-ion battery will effectively keep the voltage steady.
Disadvantage of Lithium-ion battery
1. Efficiency decreases with time
Despite the fact that battery life is dependable, it isn’t the equivalent all through its period. Lithium-ion batteries will in general diminish regarding ability and execution as time cruises by.
These kinds of batteries are not reasonable for very harsh uses as they don’t have a lot of powerful innovation. As these batteries have fluid synthetic electrolyte inside them, these batteries can get penetrated effectively with negligible power.
3. Unsafe at Higher Temperatures
At high temperatures, that is likely in cases for cell phones as the cell phones tend to overheat, the battery gets insecure and can burst into flames. Although electronic regulators are utilized to manage the temperature, still it’s very dangerous to utilize these batteries inconvenient devices.
What is a Lithium Polymer battery?
The Lithium Polymer battery is another rechargeable kind of battery that utilizes a polymer electrolyte rather than a fluid electrolyte. This distinction in decision makes lithium-poly batteries to be more proficient and safe for use.
The lithium polymer batteries are flexible in nature and hence are accessible in various shapes and sizes. The greater part of the lithium-poly batteries are light-weighted.
How do li-polymer batteries work?
A Li-polymer battery, or more correctly lithium-ion polymer battery is a rechargeable battery of lithium-ion technology using a polymer electrolyte instead of a liquid electrolyte. High conductivity semisolid (gel) polymers form this electrolyte. These batteries provide higher specific energy than other lithium battery types and are used in applications where weight is a critical feature, like mobile devices and radio-controlled aircraft.
Just as with other lithium-ion cells, lithium-polymer works on the principle of intercalation and de-intercalation of lithium ions from a positive electrode material and a negative electrode material, with the liquid electrolyte providing a conductive medium. To prevent the electrodes from touching each other directly, a microporous separator is in between which allows only the ions and not the electrode particles to migrate from one side to the other.
Advantages of Lithium-poly Battery
1. Extremely Safe
Lithium polymer batteries are unfathomably protected to utilize. They have adaptable bundling with aluminum that shields them from any sort of blast or dangerous circumstance.
2. Light-weighted (highly portable)
Lithium polymer batteries are profoundly versatile, as they are extremely light weighted. It is on the grounds that no weighty metal or fluid electrolyte is remembered for its making.
3. Versatile in nature
Lithium polymer batteries are flexible in nature and accessible in various shapes and sizes. There is no restriction fit as a fiddle, and producers exploit that.
Disadvantage of Lithium-poly battery
1. Heavily priced
Lithium-poly batteries are likewise intensely valued when contrasted and the other battery sorts of similar sizes and details. Their costs are significantly higher than that of lithium-particle batteries. However, these costs are relied upon to descend as these batteries begin delivering in masses, and afterward the estimating can be decreased essentially.
Lithium-poly batteries are less productive regarding energy thickness with much lesser accusation cycles contrasted with lithium-particle batteries.
3. Shorter Life Span
The rot pattern of these Li-Poly batteries is a lot more limited contrasted with the Li-particle batteries and in this manner, these batteries are not dependable.
The basic points of difference between lithium ion vs lithium polymer Batteries
A lithium-ion battery is a rechargeable battery format that first grew in popularity thanks to its adoption by major electronics companies in the early 1990s. They are essentially a group of very rigid electricity-generating compartments, which consists of three pieces: a positive electrode; a negative electrode; and an electrolyte, or liquid chemical compound between them. Most lithium-ion batteries, unlike more traditional ones, also include an electronic controller, which regulates power and discharge flows so your battery doesn’t overheat or explode.
The most significant difference between lithium-ion and lithium-polymer batteries is the chemical electrolyte between their positive and negative electrodes. In Li-Po batteries, it isn’t a liquid. Instead, Li-Po technology uses one of three forms: a dry solid, which was largely phased out during the prototype years of lithium polymer batteries; a porous chemical compound; or, a gel-like electrolyte. The most popular among these is the last one, which is the type of battery you’ll find in newer laptop computers and electric cars. The catch is that plenty of companies are not actually selling you a true Li-Polymer battery, instead, it’s a lithium-ion polymer battery or a Li-ion in a more flexible casing.