How to Differentiate Test Polymer Batteries

I. Differentiation from merit

1,. Replaced the liquid electrolyte with a solid electrolyte,

2, replace carbon negative electrode material with lithium ion negative electrode material

3, light quality

4, ultra-thin

5, flexible shape: can be made into different shapes according to different needs

Improvement of safety: Even if it is overcharged, it is very stable. Because the electrolyte is solid, the probability of leakage becomes very low.

II. From physical packaging to internal composition

1. Flaky: If the outside is wrapped with a sticker, use two hands to repeatedly rub it back and forth. If there is a plastic frame on the side, it is likely to be a general lithium ion, not a polymer. Remove the sticker to expose the battery. If the edge is a rectangular parallelepiped, it may be a general lithium ion. If the edge is a curved core and the metal sheet has a gap, it may be a polymer. The polymer battery can continue to be disassembled to reveal an aluminum foil similar to a vacuum package. Generally, lithium ions only show metal shell cells. If you rely on your hands, you can't continue to open them.

2. Barrel-shaped, usually with more lithium ions and less polymers. Polymers are mostly flat.

III. From product properties

Lithium polymer battery(Li-polymer, also known as polymer lithium battery): It is also a type of lithium-ion battery, but it has high energy density, miniaturization, ultra-thinning, and lightening compared to lithium-ion batteries(Li-ion)., as well as many advantages such as high safety, It's a new type of battery. In terms of shape, lithium-polymer batteries have ultra-thinning properties and can be made into batteries of any shape and capacity according to the needs of various products. This type of battery can achieve a minimum thickness of up to 0.5 mm. Its nominal voltage, like Li-ion, is also a nominal voltage of 3.7 volts and has no memory effect. And polymer batteries are mixed by solvents and adhesives with positive and negative active substances, respectively. After mixing at high speed, the positive and negative polarities are formed. Solid electrolytes.

Note: it may catch fire or even explode. And the electrolyte of the polymer encounters the water in the air to produce highly toxic hydrofluoric acid(HF).

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