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What is the difference between lithium manganese oxide battery and lithium cobalt oxide battery?

What is the difference between lithium manganese oxide battery and lithium cobalt oxide battery?

  • Categories:Industry News
  • Author:
  • Origin:
  • Time of issue:2021-09-27 13:15
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(Summary description)What is the difference between lithium manganate battery and lithium cobalt oxide battery? Lithium ion battery is divided into lithium manganate battery and lithium cobalt oxide battery.

What is the difference between lithium manganese oxide battery and lithium cobalt oxide battery?

(Summary description)What is the difference between lithium manganate battery and lithium cobalt oxide battery? Lithium ion battery is divided into lithium manganate battery and lithium cobalt oxide battery.

  • Categories:Industry News
  • Author:
  • Origin:
  • Time of issue:2021-09-27 13:15
  • Views:
Information

What is the difference between lithium manganate battery and lithium cobalt oxide battery? Lithium ion battery is divided into lithium manganate battery and lithium cobalt oxide battery. From the specific application field, lithium manganate battery is not only in the field of new energy bus battery One of the main forces of the company has also begun to exert efforts in the field of special vehicles, and at the same time, it has also made a small test in the field of passenger cars. Its market influence cannot be ignored.

What is the difference between lithium manganese oxide battery and lithium cobalt oxide battery?

Lithium manganate battery: Lithium manganate battery refers to a battery that uses lithium manganate material for the positive electrode. The nominal voltage of lithium manganate battery is 2.5~4.2v. Lithium manganate battery is used for low cost and good safety. widely used. Lithium manganate battery as a cathode material, its structure and performance are not only closely related to the raw materials and calcination process conditions, but the difference in synthesis conditions and the type and amount of doping elements can make the electrochemical performance of the product greatly improved. difference.

Technical parameters of lithium manganate battery

Output voltage range: 2.5~4.2v Nominal capacity: 7500mAh

Standard continuous discharge current: 0.2C

Maximum continuous discharge current: 1C

Working temperature: charging: 0~45℃

Discharge: -20~60℃

Lead type: national standard line UL3302/26#, the line length is 50mm, the white line is 10KNTC

Protection board parameters: (each parameter can be set according to the customer's product)

Overcharge protection voltage/each string 4.28±0.025V

Over-discharge protection voltage 2.4±0.1V

Overcurrent value: 2~4A

The advantages and disadvantages of lithium manganese oxide batteries

The advantages of lithium manganate batteries are: low temperature resistance, good rate performance, and easy preparation. The disadvantages are: the material itself is unstable and needs to be mixed with other materials, poor high temperature performance, poor cycle performance, and fast attenuation. These shortcomings of lithium manganate come from the characteristics of manganese. However, due to the widespread existence of manganese, it has obvious cost advantages.

Lithium cobalt oxide battery: Lithium cobalt oxide battery has stable structure, high capacity ratio, outstanding comprehensive performance, but its safety is poor, and the cost is very high. It is mainly used for small and medium-sized batteries, and is widely used in notebook computers, mobile phones, MP3/ In 4 small electronic equipment, the nominal voltage is 3.7V.

Standard continuous discharge current: 0.2C

Maximum continuous discharge current: 0.5C

Working temperature: charging: 0~45℃

Discharge: -20~60℃

Product size: MAX15*29*51mm

Internal resistance of finished product: ≤180mΩ

Lead type: national standard line UL1571/26#, line length 100mm

Protection parameters: overcharge protection voltage/each string 4.28±0.025V

Over-discharge protection voltage 2.4±0.1V

Overcurrent value: 3~7A

The working principle of lithium cobalt oxide battery, according to the battery reaction formula, the negative electrode reaction formula is LixC6-xe-=C6+xLi+, and the positive electrode reaction formula is Li1-xCoO2+xLi++xe-=LiCoO2. When charging, the cathode, The anode reaction formula is exactly the opposite of the negative and positive reaction formulas, so A is the negative electrode and B is the positive electrode.

Characteristics of lithium cobalt oxide battery

1. Superior electrochemical performance

2. Excellent processing performance

3. The high tap density helps to increase the specific capacity of the battery.

4. Stable product performance and good consistency

After long-term development, lithium cobalt oxide batteries have formed four product lines: cylindrical batteries, polymer soft-pack batteries, aluminum can batteries and steel can batteries. These products are used in high-end, mid-range and low-end markets, respectively. . The low-end customers of lithium cobalt oxide batteries are mainly foreign trade-based MP3, MP4, GPS, digital photo frame manufacturers and domestic second- and third-tier mobile phone manufacturers and counterfeit mobile phones. These manufacturers are mainly concentrated in the Pearl River Delta, and their main demand is steel shell batteries. , At the same time, there is also a demand for some aluminum shells and liquid soft pack batteries.

With the advancement of marketization, breakthroughs in key materials and technologies, and excavation of application areas, the situation of lithium manganese oxide batteries and lithium cobalt oxide batteries being left out is gradually changing. The editor believes that while the ternary and iron-lithium systems are competing in the power lithium battery market, lithium manganese oxide batteries, as the less concerned party in the market, have begun to erode a greater market share.

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