Lithium batteries are divided into lithium batteries and lithium-ion batteries. Cell phones and laptops use lithium-ion batteries, commonly known as lithium batteries. However, true lithium batteries are rarely used in daily electronic products due to their high risk.
Lithium batteries are widely used in energy storage systems such as hydro, thermal, wind and solar power plants, as well as in many fields such as power tools, electric bicycles, electric motorcycles, electric vehicles, the army. equipment, aerospace, etc. At present, lithium batteries have gradually expanded to electric bicycles, electric vehicles and other fields.
1. Lithium Battery:“Lithium battery” is a type of battery that uses metallic lithiumor lithium alloy as the negative electrode material and uses a non-aqueous electrolyte solution. Lithium metal batteries were first proposed and studied by Gilbert N. Lewis in 1912. In the 1970s, M. S. Whittingham proposed and began studying lithium-ion batteries. Since the chemical properties of lithium metal are very active, the processing, storage and use of lithium metal are subject to very high environmental requirements. Therefore, lithium batteries have not been used for a long time. With the development of science and technology, lithium batteries have now become mainstream.
2. Materials:1), Carbon negative electrode materials
The negative electrode materials that have actually been used in lithium-ion batteries are mainly carbon materials, such as graphite artificial, natural. graphite, microspheres ofintermediate phase carbon, petroleum coke, carbon fiber, pyrolyzed carbon resin, etc.
2) Tin-based negative electrode materials
Tin-based negative electrode materials can be divided into two types: tin oxide and tin-based composite oxide. Oxides refer to oxides of metallic tin in various valence states. There are no commercial products.
3), nitrides
4), alloys
Including tin-based alloys, silicon-based alloys, tin-based alloys germanium, aluminum-based alloys, antimony-based alloys, magnesium-based alloys and other alloys, and there are no commercial products.
5), at the nanometric scale
Carbon nanotubes, nano-alloyed materials.
6), Nano-oxide
Currently, according to the latest market development trends in the new energy sector of lithium batteries in 2009, manyHis companies started using nano-titanium oxide and added nano-silicon oxide in the past. Traditional graphite, tin oxide and carbon nanotubes significantly increase the charge and discharge capacity and the number of charge and discharge times of lithium batteries.
What is the difference between lithium batteries and dry cells?
This is a soft-packaged lithium-ion battery, and the internal assembly method is laminated. The interior of a lithium battery is composed of a positive electrode sheet, a negative electrode sheet, a separator and an electrolyte. It has a positive electrode-separator-negative electrode structure. The function of the separator is to isolate the positive and negative electrode. leaves and allow lithium ions to pass freely.
Lithium batteries can be roughly divided into cylindrical batteries, bsquare batteries and batteries in flexible packaging. Cylindrical batteries use a single-core wound structure (that is, the positive electrode sheet, separator and negative electrode sheet are wound to form a cylindrical shape), while square batteries use primarily a rolled sheet structure (i.e. the battery is rolled up to form a cylindrical shape). square shape then compacted), depending on the intended purpose. It can be divided into single-core and multi-core structures. For example, cell phone batteries have a single-core structure. Square batteries also use a laminated structure. Soft packaging batteries mainly use a laminated structure. electrode sheet and separator. They are all cut into square pieces, then positive-diaphragm-negative-positive-diaphragm-negative structure...
1.
1. Lithium battery: itis a battery that uses manganese dioxide as the positive electrode material, lithium battery metal as the negative electrode material, and uses non-aqueous electrolyte solution.
2. Dry Battery: This is a voltaic battery that uses some absorbent (like sawdust or gelatin) to turn the contents into a paste that will not spread.
2. Different principles
1. Lithium battery: It adopts a spiral winding structure and uses a very thin and highly permeable polyethylene film. is spaced between the positive and negative electrodes.
2. Dry battery: the carbon rod is used as the positive electrode and the zinc cylinder is used as the negative electrode, which converts chemical energy into electrical energy and supplies it to the external circuit. In chemical reactions, as zinc is more active than manganese, zinc loses electrons and oxidizes, while manganese gains electrons and is reduced.
3. Different uses
1. Lithium batteries: widely used in mobile phones, laptops, power tools, electric vehicles, emergency power supplies for street lights, and navigation lights, small household appliances.
2. Dry batteries: suitable for flashlights, solid-state radios, tape recorders, cameras, electronic clocks, toys, etc., and also suitable for various fields of national economy such as national defense, scientific research, telecommunications, navigation, aviation, medicine, etc.
Usage Notes
First, keeping lithium-ion batteries properly charged and discharged can extend battery life. Keeping the lithium-ion battery power between 10% and 90% is beneficial to protect thehas battery. This means that when charging batteries of digital products such as mobile phones and laptops, it is not necessary to reach the maximum value.
If digital products equipped with lithium-ion batteries are exposed to sunlight or stored in hot cars, it is best to keep these products turned off because if the operating temperature exceeds 60 degrees Celsius, the lithium battery -ion will accelerate aging.
Lithium battery charging temperature range: 0-45 degrees Celsius, lithium battery discharge temperature range 0-60 degrees Celsius.
Second, if the cell phone battery needs to be charged every day, the reason may be that the battery is defective or it is time to "retire".
For laptop owners, it is best to remove the battery if it is plugged in for a long time(high heat generated by the computer while in use is not good for the laptop battery).
Third, under normal circumstances, 50% power is most conducive to the preservation of lithium-ion batteries.
Reference for the content above? Baidu Encyclopedia Lithium Battery; Baidu Encyclopedia Dry Battery;