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What is a lithium battery? Three interpretation concepts of lithium batteries

by:dcfpower     2021-02-25
The first explanation (Military Great Cihai·Part 2): the primary battery with lithium as the negative electrode. The second explanation (Dictionary of Modern Materials Science and Engineering): Chemical batteries that use lithium as the negative electrode active material. The standard electrode potential of lithium is the most negative (-3.03V), the lightest specific gravity among metals, and the highest reaction activity. Therefore, the electromotive force and specific energy of lithium batteries are very high, and they are an important high-energy battery. The positive active materials of lithium batteries include inorganic electrode materials such as oxides, sulfides, halides, halogens, oxyacid salts, such as manganese dioxide, sulfur dioxide, copper sulfide, silver chromate, polyfluorocarbon, thionyl chloride, Iodine, etc.; electronically conductive polymers can also be used as cathode materials, such as polyacetylene, polypyrrole, polythiophene, polycarbazole, etc., also known as polymer batteries. The electrolyte of lithium battery pack is non-aqueous solution, solid and molten salt. The non-aqueous electrolyte is composed of organic solvents or non-aqueous inorganic solvents added to inorganic salts. The organic solvents used mainly include propylene carbonate, dimethyl propionamide, acetonitrile, γ-butyrolactone, etc.; non-aqueous inorganic solvents include thionyl chloride, Liquid sulfur dioxide, etc. Inorganic salts include lithium perchlorate, lithium aluminum chloride, lithium fluoroborate, and lithium bromide. Due to the violent reaction between lithium and water, not only the electrolyte cannot be used in aqueous solution, but all materials and parts must be strictly dehydrated and sealed reliably. Lithium batteries are primary batteries. The products come in a variety of shapes and specifications, such as cylindrical, button, plug, etc., and are widely used in communications, cameras, electronic watches, calculators, cardiac pacemakers and other electronic devices . The third explanation (a dictionary of metal functional materials): a type of high-energy battery with active metal lithium as the cathode. There are two types of organic electrolytes and inorganic electrolytes. The former uses mercury oxide, carbon fluoride, copper sulfide or sulfur dioxide as the anode, and uses inorganic salts and organic solvents to prepare electrolyte solutions; the latter uses inorganic salts and non-aqueous inorganic solvents to prepare electrolyte solutions. Also serves as an anode reactant. Lithium batteries have the characteristics of high working voltage, stable discharge, large specific energy and wide working temperature range, and are divided into three types: barrel type, button type and miniature. u003c/pu003e
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