Analysis of lithium materials, lithium is of course an excellent battery chemical material. 1. The discovery of lithium Lithium was discovered by j.a. in 1817. He is a student of Swedish chemist j.j. And industrial processing of lithium began in Germany in 1923. 2. The physical and chemical properties of lithium Lithium is an important rare metal and the lightest metal in nature. Silver, density 0.534g/cm3, hardness 0.6, melting point 180°C, boiling point 1342°C, atomic number 3, atomic weight 6.941, electrode potential -3.045V, theoretical specific energy 3,860mAh/g. The name of this element comes from Greek, meaning stone. Because lithium has an atomic number of 3, its outermost electrons are easily lost when in contact with other elements, allowing it to combine with other elements. Lithium can react with oxygen in the air to form a white loose compound lithium oxide. Lithium can also react violently with water, replacing hydrogen in water, releasing hydrogen and turning itself into lithium hydroxide; lithium can also be dissolved in liquid ammonia and react with nitrogen to form black lithium nitride crystals. The flame of the volatile salt of lithium is dark red and can be used to identify lithium. Application of Lithium Metal lithium has experienced a long process from discovery to large-scale development and application due to its unique chemical properties, difficulty in extraction, and scarcity of minerals. It was not until the First World War, with the military industry's needs, that its use gradually received attention. Initially, only a few industrialized countries such as Germany, the United States, and the former Soviet Union were developed and applied. The initial specific application of lithium in the controlled thermonuclear reaction in the military field was an important material for nuclear weapons such as hydrogen bombs, qualitative bombs, and neutron bombs. After World War II, with the development of technology, lithium and other rare metals such as beryllium, niobium, tantalum and some industries and technologies in other developed countries are widely used in metallurgy, machinery, chemical industry, high-energy batteries, ceramics, glass materials, missiles, rockets, Nuclear weapons, electronics, aerospace industry, atomic energy and other fields have gradually become a strategic resource. Specific methods of use: 1. Since lithium is easily combined with oxygen, nitrogen, and sulfur, it can be used as a deoxidizer in the metallurgical industry. If a small amount of lithium is added to the five parts of copper (per 100,000 years), it can greatly improve the performance of copper. This is because the chemical properties of lithium are active, which can be harmful impurities such as copper, oxygen, nitrogen, and sulfur, which are removed by reaction. So as to give play to the purpose of Dejia agent. Adding a small amount of lithium to aluminum, magnesium and other metals can improve their robustness and acid and alkali resistance. Lithium compounds also have many uses. One of the most striking is the hydride of lithium. When lithium metal and hydrogen are used together, a white lithium hydride powder is formed. Lithium hydride can react violently with water, releasing large amounts of hydrogen. One kilogram of lithium hydroxide and water can release 2,800 liters of hydrogen! Therefore, lithium hydroxide can be regarded as a convenient hydrogen storage warehouse. The use of lithium hydroxide and water releases two kilograms of hydrogen, which is equivalent to the hydrogen contained in an ordinary steel cylinder at a pressure of 120 to 150 atmospheres. 3. In addition, some lithium compounds are used as glazes in the ceramic industry. In the glass industry, it is used to make opal glass and special glass that can pass ultraviolet rays. The TV screen glass is lithium glass. Adding lithium hydroxide to alkaline batteries can greatly increase the capacity of the battery. 4. Lithium compounds are very common in plants. But their specific uses for plants are unclear. Some red and yellow algae and tobacco usually contain more lithium compounds. When the tobacco is burned to ashes, lithium remains in the ashes. Lithium can be used as a catalyst to accelerate certain chemical reactions. The interesting thing is: when you strike a match, put a piece of sugar on the flame of the match, the sugar will start to melt, but it will not burn. However, if you put some soot on the candy bar, the candy bar will burn like paper! This is because the cigarette’s soot contains lithium, which can accelerate the oxidation (burning) of sugar. 5. In terms of controlled thermonuclear reactions, it is an important raw material for the manufacture of nuclear weapons such as hydrogen bombs, qualitative bombs, and neutron bombs. 6. Since the various compound reactions generated by metals are reversible with lithium, coupled with its high theoretical specific energy (up to 3860 mAh/g), people use these characteristics to create high-energy-density lighting. Statement: This site Some pictures and content of the published article are from the Internet. If there is any infringement, please contact to delete the previous article: Structural analysis of 12V street lamp solar battery
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