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How about rare earth lithium batteries?

by:dcfpower     2021-03-13

The invention and application of rare earth lithium batteries have launched a vigorous battle for rare earths in the electric vehicle battery market. What kind of battery is a rare earth battery? What are the advantages and disadvantages of rare earth lithium batteries?

The rare earth battery is a new energy battery product developed by the battery. It is an upgraded product of the polymer lithium battery pack. This fully-sealed, maintenance-free rare earth battery is environmentally friendly, high Capacity, intelligence, one charge can start the car at least 30 times, and it also has the advantages of long service life, light weight, large capacity, low price, and high safety. According to reports, this high-tech new product was officially put into production in June 2013 after more than 1,000 day and night efforts and hundreds of tests. It is an advanced new energy product in my country's automotive starting power supply industry today.

The rare earth battery is made of imported high-purity nano and rare earth alloy materials. It has a number of national patented technologies such as green environmental protection, high capacity, and intelligence. The product has good consistency, reliability, and stability. Low medium error rate, maintenance-free; high charge acceptance efficiency, low self-discharge rate; high safety performance against explosion, fire and short circuit; excellent high-current discharge performance, high low-temperature capacity; good over-discharge recovery performance, stable high-temperature characteristics , Vibration resistant.

Traditional lithium batteries are a type of battery that uses lithium metal or lithium alloy as the negative electrode material and uses a non-aqueous electrolyte solution. However, due to the active chemical nature of lithium metal, it has strict environmental requirements during processing, storage and use. Therefore, its application is greatly restricted.

Later, Sony Corporation of Japan invented a lithium battery with carbon material as the negative electrode and lithium-containing compound as the positive electrode. During the charging and discharging process, there is no metal lithium, only lithium ions, so it is called lithium ion. Battery, referred to as lithium battery.

The positive electrode material of lithium battery is usually composed of lithium active compound, and the negative electrode is carbon with special molecular structure. When charging, the potential applied on both sides of the electrode forces the compound of the positive electrode to release lithium ions, which are embedded in the carbon in which the molecules of the negative electrode are arranged in a sheet structure. During discharge, lithium ions are separated from the layered structure and recombine with the compound of the positive electrode. Electrons flow through the external circuit to generate current.

1. High specific energy and great development potential. With high storage energy density, it has reached 460-600Wh/kg at present.

2. Long service life, the average service life can reach more than 6 years.

3. The self-discharge rate is very low. At present, it can generally achieve less than 1%/month, which is less than 1/20 of that of Ni-MH batteries.

4. Green and environmental protection. It does not produce any toxic and harmful heavy metal elements and substances such as lead, mercury, and cadmium.

5. The working temperature range is wide, and it can be used in the environment of -20℃-60℃.

6. The rated voltage is high (the single working voltage is 3.7V), which is approximately equal to the series voltage of 3 nickel-cadmium rechargeable batteries.

7. No memory effect. The memory effect is that the capacity of the battery is reduced when the battery is not used up and charged. The memory effect of traditional batteries is very serious.

Compared with ordinary lithium batteries, rare earth lithium batteries have the following advantages:

Due to the addition of rare earth elements, the charging stability is improved. At the same time, the structural stability of the material is ensured, and the cycle performance is improved and enhanced. Rare earth elements expand the three-dimensional channel of lithium ion migration, effectively improve the reversibility of the electrochemical cycle of the material, and extend the battery life.

The full name of 'silica gel battery' is 'rare earth nano silica gel batteryA national patent technology, the battery can be charged once, the continuous mileage of the car can reach more than 120 kilometers, the maximum speed can reach 120 kilometers per hour, and it has the advantages of long service life, light weight, large capacity, low price, and high safety. The most advanced low-carbon product for vehicle power batteries.

The rare earth (rareearth) has the reputation of 'industrial vitamin'. Now it has become an extremely important strategic resource. Rare earth element oxides refer to 15 kinds of lanthanide oxides with atomic numbers 57 to 71 in the periodic table, and 17 kinds of oxides of scandium (Sc) and yttrium (Y), which are chemically similar to lanthanides. . Rare earth elements have been widely used in petroleum, chemical industry, metallurgy, textiles, ceramics, glass, permanent magnetic materials and other fields. With the advancement of science and technology and continuous breakthroughs in application technology, the value of rare earth oxides will become greater and greater.

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