The difference between dry batteries and lithium batteries
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2023/07/26 11:24:32
Dry battery
A dry cell is a type of voltine battery that uses an absorbent (such as wood chips or gelatin) to make the contents into a paste that does not spill. Commonly used as flashlight lighting, radio and other power supply. After years of development, China's dry battery technology has made breakthroughs in its specific energy, cycle life, high and low temperature adaptability.
Dry cell (Dry cell) is a kind of paste electrolyte to produce direct current chemical battery (wet battery is the use of liquid electrolyte chemical battery), dry battery is a disposable battery, is commonly used in daily life, and lightweight battery. They can be used in many electrical appliances.
Lithium battery
"Lithium battery" is a type of battery made of lithium metal or lithium alloy as a positive/negative electrode material and using a non-aqueous electrolyte solution. In 1912, the lithium metal battery was first proposed and studied by Gilbert N. Lewis. In the 1970s, M. S. Whittingham proposed and began to study lithium-ion batteries. Due to the very active chemical characteristics of lithium metal, the processing, preservation and use of lithium metal have very high environmental requirements. With the development of science and technology, lithium batteries have become the mainstream.
Lithium batteries can be broadly divided into two categories: lithium metal batteries and lithium ion batteries. Lithium-ion batteries do not contain lithium in the metallic state and are rechargeable. The fifth generation of rechargeable batteries, lithium metal batteries, was born in 1996, and its safety, specific capacity, self-discharge rate and performance-to-price ratio are better than lithium-ion batteries. Due to its own high technical requirements, only a few companies in a few countries are producing such lithium metal batteries.
The difference between dry batteries and lithium batteries
The No. 5 and No. 7 batteries usually used belong to dry batteries, and button batteries, mobile phone batteries, etc. belong to lithium batteries. The differences between the two are as follows:
First, the material is different
1, lithium battery: is the use of manganese dioxide as a positive electrode material, metal lithium battery metal as a negative electrode material, the use of non-aqueous electrolyte solution of the battery.
2, dry battery: is a voltaic battery, the use of some absorbent (such as wood chips or gelatin) to make the inclusion into a paste that will not spill.
Second, the principle is different
1, lithium battery: The use of spiral wound structure, with a very fine and highly permeable polyethylene film isolation material between the positive and negative electrodes.
2, dry battery: carbon rod as a positive electrode, zinc cylinder as a negative electrode, the chemical energy into electrical energy supply to the external circuit. In the chemical reaction, because zinc is more active than manganese, zinc loses electrons and is oxidized, and manganese gains electrons and is reduced.
Three, different uses
1, lithium battery: a large number of applications in mobile phones, laptop computers, power tools, electric vehicles, street lamp backup power, navigation lights, small household appliances.
2, dry battery: suitable for flashlights, semiconductor radios, radio recorders, cameras, electronic clocks, toys, etc., but also suitable for national defense, scientific research, telecommunications, navigation, aviation, medicine and other areas of the national economy
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