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Lithium polymer batteries and LiFePO4 batteries

Views: 200     Author: Ubest     Publish Time: 2023-08-08      Origin: Site



A LiFePO4 battery is a lithium-ion battery that uses the compound LiFePO4 as the positive electrode material. Lithium cobalt oxide, lithium manganate, lithium nickel oxide, ternary materials, LiFePO4, and others make up the majority of the cathode materials in lithium-ion batteries. The majority of lithium-ion batteries use lithium cobalt oxide as their cathode material. Related product:12V 200Ah LiFePO4. Battery

A lithium-ion battery that uses LiFePO4 as the positive electrode material is referred to as a LiFePO4 battery. Long-life lead-acid batteries have a cycle life of about 300 cycles, while LiFePO4 batteries have a maximum cycle life of 500 cycles. In contrast, LiFePO4 power batteries have a cycle life of over 2500 cycles and can be charged at a standard rate of 5 hours, which can charge them up to 2500 cycles.

When used under the same conditions, a lead-acid battery of the same quality will last "new half year, old half year, and maintenance and maintenance for half a year," or 1 to 1.5 years, whereas a LiFePO4 battery will last 7 to 8 years. When all of these factors are considered, the price-performance ratio will be more than four times that of lead-acid batteries.

LiFePO4 batteries are used in our products. The solar power station powered by LiFePO4 is more stable. The LiFePO4 battery powers our portable power station for over 2500 cycles and has a battery life of over ten years.

The Polymer Lithium Battery Principle

There are currently two types of lithium-ion batteries: liquid lithium-ion batteries (LIB) and polymer lithium-ion batteries (PLB). The term liquid lithium-ion battery, for example, refers to a secondary battery in which the positive and negative electrodes are Li+ intercalation compounds. The positive electrode is composed of the lithium compounds LiCoO2, LiNiO2, or LiMn2O4, while the negative electrode is composed of the lithium-carbon interlayer compound LixC6. The typical battery system is as follows:

A polymer lithium-ion battery works on the same principle as a liquid lithium battery; the main difference is that the electrolyte is different from liquid lithium. The battery's main structure consists of three components: a positive electrode, a negative electrode, and an electrolyte. The term "polymer lithium-ion battery" refers to the fact that at least one of the three main structures uses polymer materials as the primary battery system. Polymer materials are primarily used in positive electrodes and electrolytes in today's polymer lithium-ion battery systems.

Conductive polymers or inorganic compounds commonly used in lithium-ion batteries are used as positive electrode materials. Solid or colloidal polymer electrolytes or organic electrolytes can be used as the electrolyte. Lithium-ion technology, in general, employs liquid or colloidal electrolytes. As a result, flammable active ingredients must be used in Rugged secondary packaging, which adds weight and limits dimensional flexibility.

The new generation of polymer lithium-ion batteries can be thinned in shape, area, and shape (the thinnest ATL battery can reach 0.5 mm, which is equivalent to the thickness of a card), which greatly improves battery design. Flexibility, in that it can be made into batteries of any shape and capacity based on product requirements, gives equipment developers some design flexibility and adaptability in power solutions to maximize the performance of their products. At the same time, the polymer lithium-ion battery has a 20% higher unit energy than the current general lithium-ion battery, and its capacity and environmental performance are superior to the lithium-ion battery.

Lithium polymer batteries (Li-polymer) are created by substituting polymer electrolytes based on lithium-ion batteries for traditional liquid organic electrolytes. This polymer electrolyte can be used as an ion conductor as well as a separator. Furthermore, because lithium metal has very low reactivity, it can effectively avoid the easy combustion and leakage of lithium-ion batteries.

Because the lithium-ion polymer battery adsorbs a colloidal organic electrolyte on a polymer matrix, this electrolyte is neither a free nor a solid electrolyte, so the lithium-ion polymer battery not only has the advantages of Lithium-ion batteries' excellent performance but can also be made into ultra-thin products of any shape and size, giving them a wide range of applications and promising future development. Furthermore, the safety is superior to that of lithium-ion batteries. If it gets too hot while in use, it will swell or burn rather than explode.

Additionally, compared to LiFePO4 (3.2 volts), the polymer lithium battery (3.7 volts) is lightweight and has a higher voltage. Compared to LiFePO4, the high-temperature resistance coefficient is lower.

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