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What Are LiFePO4 Prismatic Cells? Which One Is The Best?

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What Are LFP Prismatic Cells?

LiFePO4 prismatic cells is a battery that encapsulates lithium iron phosphate in a Prismatic shell. The electrode tablets (anode, partition, cathode) in the shell form a battery pack through stacking chiefly.

Lithium iron phosphate Prismatic Cells have lots of advantages as a matter of fact. The most obvious advantage is they contain more energy and provide higher durability Since they flat body. For the same volume, stacking bonded batteries can release more energy at one time and provide better performance.

LiFePO4 prismatic cell are mainly used for energy storage systems and electric vehicles basically. They are not suitable for small devices such as electric bicycles and mobile phones. Therefore, they are more suitable for energy -intensive applications.

How does LiFePO4 prismatic cells work?

Structure Of Lithium Cells

Above all, Just as below picture, the structure of cells are main made up of Cathode, Anode, And electrolyte and separator.

LiFePO4 Prismatic Cells Structure
LiFePO4 Prismatic Cells Structure

Working Principle Of Lithium Cells

Lithium-ion uses a anode (negative electrode) , an cathode (positive electrode)and electrolyte as conductor chiefly.

The anode of a discharging battery is negative and the cathode positive correspondingly.

A separator creates a barrier between the cathode and anode, preventing the electrodes from touching while allowing electrical charge to flow freely between them.

The cathode is metal oxide, and the anode consists of porous carbon. During discharge, the ions flow from the anode to the cathode through the electrolyte and separator. Charge reverses the direction and the ions flow from the cathode to the anode.

Below picture illustrates the process.

Working Principle Of Lithium Cells
Working Principle Of Lithium Cells

Where you can find the best LiFePO4 prismatic cells?

ELB is a battery manufacturer who main produce the high quality LiFePO4 prismatic cells, so if you want to sourcing LiFePO4 prismatic cells, ELB is a good choice. Here is the main lifespan curve of LiFePO4 prismatic cells for your reference. Or you can click here to get moredetails about the LiFePO4 prismatic cells.

Cycle curves at 1C 100%DOD
Cycle curves of LiFePO4 prismatic cells at 1C 100%DOD

5 models of LFP prismatic cells

Currently, we ELB mainly developed 5 model of LiFePO4 prismatic cells.

LiFePO4 prismatic cells vs cylindrical cells, which is the best?

Here is the Comparison between prismatic cells vs cylindrical cells,

  1. The energy density of prismatic cells is theoretically higher than cylindrical cells. Because the structure of prismatic batteries is relatively simple, the production process is not complicated, also prismatic batteries do not use high strength stainless steel as shell like cylindrical batteries. More and More Electric Vehicle battery apply square battery.
  2. With excellent thermal characteristics, the prismatic cell requires less cooling per energy unit when compared to the cylindrical lithium cell format. Additionally, the prismatics offers excellent cycle life expectancies even under high and varied load, which typically has an adverse effect on the life expectancy of other lithium cell formats. With a cycle life of up to four times greater than cylindrical lithium cells, the cost of operation and ownership for prismatics can be significantly lower.
  3. Cylindrical battery development is the longest process, the technology is the most mature, its standardization is high as well. And because cylindrical cells have more space between individual cells when they are assembled, they have a big advantage in terms of heat dissipation, and many models with cylindrical cells have adopted lower-cost air cooling technology.

If your lithium application requires high power, long service life and good performance, thinking less about the effective use of space, a cylindrical cell could be your selection. Otherwise, if your application needs to be suitable for a limited space and a higher price is acceptable, a prismatic cell could be better.

When you are not sure what type of lithium cell you should use, try to consider an experienced partner, such as ELB, that is able to provide a power supply solution matching your specific requirement and helps you make a reasonable buying decision.

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