The positive electrode material of lithium-ion battery is transition metal oxide or polyanion transition metal compound, such as lithium cobalt oxide, lithium nickel cobalt manganate and lithium iron phosphate, etc., and the negative electrode is graphite (carbon). The working principle of lithium-ion battery refers to its charging and discharging principle. When the battery is charged, lithium ions are generated on the positive electrode of the battery, and the generated lithium ions move to the negative electrode through the electrolyte. The graphite as the negative electrode has a layered structure, and the lithium ions reaching the negative electrode are embedded in the graphite layer. The more lithium ions are embedded, the higher the charging capacity. In the same way, when the battery is discharged, the lithium ions embedded in the graphite layer of the negative electrode come out and move back to the positive electrode. The more lithium ions that return to the positive electrode, the higher the discharge capacity. What we usually call battery capacity refers to the discharge capacity. So what are the advantages and disadvantages of lithium battery?

What are the advantages and disadvantages of lithium-ion batteries?

What are the advantages and disadvantages of lithium-ion batteries? Lithium-ion batteries have the advantages of light weight, large capacity, no memory effect, green environmental protection and no pollution, so they have been widely used - many digital devices now use lithium-ion batteries as power sources.

• Lithium-ion battery has high energy density, its capacity is 1.5 to 2 times that of NiMH battery of the same weight, and has very low self-discharge rate.

• In addition, lithium-ion batteries have almost no "memory effect", which greatly facilitates mobile phone users. Users do not need to discharge and recharge each time they are charged, but can charge the mobile phone at any time as they want;

• The advantages of lithium-ion batteries without toxic substances are also an important reason for their widespread use.

The exterior of lithium batteries is generally marked with English lithium ion battery (lithium battery) or lithium secondary battery (lithium secondary battery), lithium-ion rechargeable battery (rechargeable lithium battery), so users must see the appearance of the battery block when purchasing a battery. mark to avoid mistaking cadmium-nickel and nickel-hydrogen batteries for lithium batteries because the battery type is not clearly seen.

what are the disadvantages of lithium-ion batteries?

1. The cost is high, mainly due to the high price of the cathode material LiCo02. With the continuous development of cathode technology, LiMn204, LiFeP04, etc. can be used as cathodes, which is expected to greatly reduce the cost of lithium-ion batteries;

2. There must be a special protection circuit to prevent overcharging or overdischarging;

3. The compatibility with ordinary batteries is poor, because generally, lithium-ion batteries can be replaced only when 3 ordinary batteries (3.6V) are used.

Shenzhen Topband Battery Co., Ltd.，established in 2006, is a wholly-owned subsidiary of Shenzhen Topband Co., Ltd. (002139.SZ). We focus on lithium iron phosphate batteries,with independent research and development in cells and BMS. With the ability to integrate the entire industry chain, we are committed to providing customers with one-stop lithium battery solutions and services. Our quality products are widely used in energy storage and light power.