With the continuous development of new energy technology, processing technology is becoming more and more mature, lithium-ion batteries battery manufacturing cost are reduced, as the growth of the market share of lithium batteries in the consumer electronics factory production equipment, and gradually established a dominant position, and in the aviation, spaceflight, navigation, satellite and military communication equipment and transportation applications received, The progress of lithium battery technology will not only accelerate the development of 3C products, but also promote the development of national defense and telecommunications technology.
Lithium battery for military use
Lithium battery for military use
Lithium batteries are generally divided into two categories: liquid lithium batteries and solid-state lithium batteries. Solid state lithium battery is what we call polymer lithium battery or plastic granule battery. Liquid lithium batteries come in three different packages, including steel, aluminum and plastic. Polymer lithium batteries are colloidal electrolyte lithium batteries with flexible packaging. Polymer lithium batteries not only have high energy and long service life, but also have high reliability and processing. The positive and negative electrode materials of polymer lithium batteries are the same as those of liquid lithium batteries. The negative electrode materials generally use carbon and graphite, while the positive electrode can use transition metal oxide and other materials.
How a battery works
The difference is that the electrolyte of a polymer lithium battery is a polymer with ionic conductivity. Polymer lithium battery is easy to process, can be made into a large area of uniform film, which can greatly reduce the resistance of the battery; Strong plasticity, but also can keep in good contact with the electrode in the all-solid-state battery, can increase the discharge current; Liquid electrolyte battery is through the battery series to obtain high voltage, polymer battery because of its own liquid, can be made into a single layer to achieve high voltage; In addition, because the battery is packaged in soft materials, it allows flexible bending, folding and shape design.
Lithium battery material for military use
For small lithium batteries (such as mobile phone batteries), it requires positive and negative electrode active materials to have the highest electrochemical specific capacity as possible, so as to ensure the high capacity of lithium batteries, so in the selection of positive and negative electrode materials mainly consider the electrochemical specific capacity of materials. For medium and large lithium batteries, it requires the positive and negative active materials to have the highest electrochemical specific capacity as possible. Under the working principle of lithium battery, to have excellent reliability and safety, so in the selection of positive and negative electrode materials considering the size of the electrochemical specific capacity of the material, the main concern is the safety of the material. For military lithium batteries, the safety of batteries in use is also very important while the batteries have high energy. The current research shows that the further improvement of electrochemical performance and safety of lithium batteries mainly depends on the improvement of cathode materials. The research and development of lithium batteries focus on modifying the cathode materials used in commercial lithium batteries or developing new cathode materials with excellent performance.
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