3.0V cylindrical lithium manganese dioxide battery: with specific energy up to 700WH/KG or more), stable discharge, storage at room temperature for 5-10 years, operating temperature: -40~+60℃, resistant to leakage, light hysteresis, etc. advantage. The common structural forms of lithium manganese batteries are carbon cylindrical case type and cylindrical winding type. In terms of current, they are divided into two types: general energy type and high power type. Mainly used in digital cameras, video cameras and wireless intelligent instruments.
It's easy to find, there are many on Taobao.
Lithium batteries have not been popular for almost thirty years. Over the past three decades, battery technology has essentially stagnated. From dry batteries to lead acid batteries, and now to batteriesLithium batteries, although emerging batteries appear in continuous flow, they cannot replace lithium batteries due to some technical problems.
The main reason is that battery research and development takes a long time. For example, when researchers improve a certain part of the battery, they need to conduct a large number of charging and discharging experiments to verify the effect, and each charging and discharging experiment consumes time and resources. The manufacture of batteries, from the laboratory to the production line, is also a long process, although it can be said that it involves development and testing on the production line (the test for adjust the battery size is to open the mold at the production site). line, once, twice, three times... .. It's all money) and requires much more energy and cost than a laboratory.
MoreMaterial research and development reserves are higher, the more explosive the battery will be. New batteries with large capacity, long life and small capacity have not yet solved a series of problems, such as cost and safety issues. Most of these problems are related to materials. Developing emerging materials is sometimes scratching the a** and is highly accidental. First of all, lithium and sodium are both metals, they are both chemically reactive and react very easily with oxygen in the air etc., but sodium is more reactive than lithium, and the lithium is very unstable. The radius of a sodium atom is much larger than the radius of a lithium atom, which means that the volume of a sodium ion is much larger than that of a lithium ion.
All batteries have positive and negative terminals. Lithium-ion batteries use lithium ions to mover between the positive and negative electrodes in order to achieve the purpose of charging and discharging. The number of moving lithium ions is very large, so the positive and negative electrodes must have enough space to store the lithium ions. The positive electrode of a battery is usually made of lithium and other metal oxides, such as lithium iron phosphate, while the most common material for the negative electrode is graphite (black), which has a unique structure: it is layered, composed of layers of honeycomb Formed by superposition of planes. Smaller lithium ions can slip between graphite layers and form chelates with carbon atoms. And this process can be repeated.