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1. Lithium ion batteries and lithium polymer batteries can be distinguished on the packaging label of the battery. Lithium ion batteries are usually labeled with the word Li ion, while lithium polymer batteries are usually labeled with the word Li Polymer, as shown in the following figure. Meanwhile, due to the gel like electrolyte of lithium polymer batteries, there is less electrolyte leakage problem, so most of them are packaged in aluminum-plastic soft packaging.

2. Lithium batteries are a type of battery made of lithium metal or lithium alloy as the negative electrode material, using non-aqueous electrolyte solutions, invented by Edison. The reaction equation for battery application is: Li+MnO2=LiMnO2. This reaction is an oxidation-reduction reaction and discharge. In the past, lithium batteries were not widely used due to the highly reactive chemical properties of lithium metal, which required high environmental requirements for processing, storage, and use.

Lithium batteries are usually divided into two categories: lithium metal batteries and lithium-ion batteries. Lithium ion batteries do not contain metallic lithium and are rechargeable. The fifth generation product of rechargeable batteries, lithium metal batteries, was born in 1996. Their safety, specific capacity, self discharge rate, and cost-effectiveness are all superior to lithium-ion batteries.

3. Lithium polymer battery (also known as polymer lithium battery): Compared to previous batteries, it has high energy, miniaturization, and lightweight, and is a type of battery with chemical properties. In terms of shape, lithium polymer batteries have ultra-thin characteristics and can be made into batteries with different shapes and capacities to meet the needs of some products. The theoretical minimum thickness of this type of battery can reach 0.5mm.

Lithium ion batteries and lithium polymer batteries can be distinguished on the packaging label of the battery. Lithium ion batteries are usually labeled with the word Li ion, while lithium polymer batteries are usually labeled with the word Li Polymer, as shown in the following figure. Meanwhile, due to the gel like electrolyte of lithium polymer batteries, there is less electrolyte leakage problem, so most of them are packaged in aluminum-plastic soft packaging.

Polymer lithium batteries have the same chemical properties and even the same internal structure as liquid lithium-ion batteries. They are a new type of battery developed on the basis of liquid lithium-ion batteries. Compared with liquid lithium-ion batteries, polymer lithium-ion batteries have the following advantages:

Good safety performance, will not explode

Can be made into various shapes

Lighter than steel shell lithium batteries and aluminum shell lithium batteries of the same specifications

The capacity is generally higher than that of steel shell lithium batteries and aluminum shell lithium batteries of the same specifications

Low internal resistance allows for greater battery capacity utilization

Good high-temperature performance, no bulging at 85 ℃ for 4 hours

Good cycling performance, battery capacity, and internal resistance consistency.

Brilliant Encyclopedia | Digital Enthusiasts | Reported on July 19, 2017 | Comments (2) 184

Lithium ion batteries with polymer cathode materials.

It uses conductive polymers as the positive electrode material, which has a specific energy three times that of existing lithium-ion batteries and is the latest generation of lithium-ion batteries.

Due to the use of solid electrolytes instead of liquid electrolytes, polymer lithium-ion batteries have advantages over liquid lithium-ion batteries, such as thinness, arbitrary area and shape, and will not cause safety issues such as leakage and combustion explosions. Therefore, aluminum plastic composite films can be used to manufacture battery shells, which can improve the specific capacity of the entire battery; Polymer lithium-ion batteries can also use polymers as positive electrode materials, which will increase their specific energy by more than 50% compared to current liquid lithium-ion batteries.

In addition, polymer lithium-ion batteries have improved working voltage and charge discharge cycle life compared to lithium-ion batteries. Based on the above advantages, polymer lithium-ion batteries are hailed as the next generation of lithium-ion batteries. Just like this one

Lithium polymer battery (Li polymer, also known as polymer lithium battery): It is also a type of lithium-ion battery, but compared with liquid lithium battery (Li ion), it has many obvious advantages such as high energy density, smaller size, ultra-thin, lightweight, and high safety. It is a new type of battery. In terms of shape, lithium polymer batteries have ultra-thin characteristics and can be made into batteries of any shape and capacity to meet the needs of various products. The minimum thickness that this type of battery can achieve can reach 0.5mm. Its nominal voltage, like Li ion, is also 3.7V without any memory effect.

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