鋰離子電池及其材料

1、鋰離子電池及其材料 (Lithium ion batteries and their materials ) This article is contributed by yufesnackPdf documents mayexperience poor browsing on the WAPside. It is recommendedthat you first select TXT, or download the source file to the local view.2002 -, 09, 34 (5) Bo Shengmin lithium ion batteries and

2、their materials 19Lithium ion batteries and their materialsBoshengmin(Tianjin Chemical Research & Design Institute, Tianjin 300131, China)Abstract: This paper introduces the basic principle and characteristics of lithium ion batteries, the development process and manufacturing process of lithium

3、 ion batteries, mainly from the cathode material of lithium ion battery anode materials, electrolytes, adhesives, etc. the diaphragm part of the lithium ion battery chemical production from the perspective of. The development status of lithium ion batteries and their materials in China are briefly i

4、ntroduced, and their future prospects are also prospected. Key words: lithium ion; battery; material: figure number: TQ131. 1 + 1, document identification code: A, article number: 1006-4990 (2002), 05 - 0019 - 02Lithium, ion, battery, and, its, materialsBO S Hengmin (Tianjin, Research & Design,

5、Institute, of, Chemical, Industry, Tianjin, 300131)Abstract: The, basic, principle, and, characteristics, of, lithium, ion, battery, preparating, process, are, introduced., and, The, anodeCathod materials, electrolytes binder, and diaphragm of lithium ion battery are also described. The present stat

6、us and development trends of lithium ion battery and its materials in China are briefly stated.Key words: lithium ion; battery; material1 basic principles of lithium ion batteriesLithium ion battery refers to the use of carbon materials can be inhaled or desorption of lithium ions as anode active ma

7、terial; use of inhaled or lithium ion and lithium ion desorption of metal oxides as cathode active material, and made use of organic solvents for chemical reaction based on the above principle as the rechargeable battery electrolyte. When the battery is charged and discharged, the lithium ion (Li) i

8、s repeatedly inhaled or desorbed at the positive and negative poles, so it is called a lithium-ion battery. It mainly consists of positive electrode, negative electrode, diaphragm, electrolyte and so on. The reaction is as follows:LiCoO2 + C nCharge dischargeThe memory effect of the pool is rather h

9、eavy. ) more cycles, longer life. 7) the cobalt in the positive electrode of lithium ion battery is scarce, and the price is more expensive than 8. In recent years, manganese elements have been replaced by low price manganese. In 1980 3 the development process of lithium ion battery, conductive poly

10、mer, research in the world all plastic battery boom, were inspired by some carbon materials doped metal research in quantum chemistry after having conductive properties, Japanese researchers in the study of lithium metal anode instead of lithium batteries found in some carbon materials can be inhale

11、d and good desorption of lithium ion and lithium ion battery design. After that, the new discovery of cobalt (LiCoO2) cobalt nickel (LiNiO3) with positive electrodes in nonaqueous electrolytes was carried out at the University of Oxford in England4 V above voltage research results, initially formed

12、a lithium-ion battery.Li, 1-, x, CoO2 + C, nLi, X2 lithium ion battery featuresIon batteries mainly have the following advantages:) high energy density. Calculated by unit volume or unit mass, the energy stored by 1 is large. Therefore, lithium ion battery storage of the sameenergy, small size, ligh

13、t quality, that is, can be miniaturized and lightweight. High voltage. Because of the use of non-aqueous organic solvents, it is 23 times as much as the other 2 batteries. This is also an important reason for the high energy density.High current discharge, and safe. 3) small discharge. Nickel cadmiu

14、m, nickel metal hydride battery 1 - 4 - 1 -. 23) no lead, 5 cadmium and other harmful substances, friendly to the environment. Memoryless effect. To use electric battery memory effect is 6After that, manyaspects of detailed research have been carried out, and a variety of lithium-ion batteries which

15、 can meet the requirements of users have been manufactured and commercialized. Now, the research on the different forms and materials of lithium ion batteries and lithium two batteries is still being carried out in japan. 4 lithium ion battery manufacturing (see Figure 1), lithium ion battery manufa

16、cturing project has 4 parts, the first 3 projects, especially the electrolyte engineering raw materials are chemical production. 5 the main material of lithium ion battery) cathode material 1 cathode active material: cobalt lithium cobalt cobalt nickel,Charge drops when recharging. And nickel hydrog

17、en batteries, especially nickel cadmiumBiography: Bo Shengmin, male, born in 1942, deputy chief engineer and Research Fellow of Tianjin chemical research and Design Institute, has published several papers and 2 monographs."China Academic Journal Electronic Publishing House. All rights reserved.

18、"Http:/ANIC CHEMICALS INDUSTRY inorganic salt industry 2002 - 09, 34 (5) 20 INORGAdhesive 4 is used to apply positive and negative active material to a metal foil as a collector. It is a unique technology for making lithium ion batteries. Adhesives that require good bonding, softness, resistanc

19、e to electrolyte, oxidation resistance, and uniform film formation. The commonly used polymer binder, such as polyvinylidene fluoride, PTFE, Vinylidenefluoride tetrafluoroethylene hexafluoropropylene copolymer, styrene butadiene copolymer and polyurethane etc. (5) in order to prevent positive and ne

20、gative short-circuit, and other batteries using paper or non-woven fabrics, lithium ion batteries using polyethylene microporous film. The electrolyte, non absorbent, good electrical insulation, good ionic conductivity, at 50 um thickness below the mechanical strength is still high, especially the h

21、eat can melt with special m special functions, such as 130 DEG C, microporous membrane closure, the battery automatically stops, to ensure the safety of the battery. Insulation gasket, 6 explosion-proof film, sealing ring, shell and so on. 6 lithium ion batteryandits materials in our country present

22、 situation and Prospect of lithium ion batteries are from small battery varieties, specifications to a large battery of many varieties and specifications, and continue to strengthen the whole solidpolymer battery R& D and production, but also is the main figure 1 lithium ion battery manufacturin

23、g engineering the flow chart to reduce costs, such as cathode materials used for lithium manganeseoxides, lithium manganeseoxide and lithium ferrite. As mentioned earlier, the main use of lithium cobalt acid in power batteries, the price is low, the market will be greatly expanded. At present, the e

24、ffect is very good. Cobalt, however, is expensive and scarce. The manganeseprice is one percent of the total lithium ion battery production. In addition to the negative electrode, most of the other materials are imported. After many years of research, foreign lithium manganese oxide has been in the

25、trial stage. Mouth, the price is high. In the lithium ion battery materials, lithium, manganese, fluorine phosphorus acid lithium is still in research stage. In addition, organic sulfur compounds, especially in China are all resources in the country, so these materials made in our country as well as

26、 double thiol compoundsas cathode has been studied for a long time. It saves foreign exchange and reduces costs. The main components of adhesives are polyvinylidene fluoride, PTFE and fluorine rubber lithium-ion batteries. They are able to replace lead-acid batteries, nickel cadmium batteries and ni

27、ckel rubber. The conductive filling body is graphite,. Collector is copper foil. Carbon black hydrogen cell is the most promising battery.This high-tech products and) negative electrode materials, 2 negative active substances: mainly graphite, as well as the manufacture of its supporting materials,

28、our country already has a certain level. But hard carbon,. It is mainly made of specially made artificial graphite. Further research work should be done to develop soft carbon adhesives such asvinylidene fluoride, styrene butadiene rubber and fluorine rubber as soon as possible. The productivity of

29、conductive fillers is to make the lithium-ion battery in China reach the world advanced level and be graphite,. The collector is aluminum foil. Low carbon black, more conducive to commercialization, internationalization. Electrolyte 3 lithium ion battery electrolyte selection is very important.Refer

30、ence: because the protective film is formed on the surface of the anode and the electrolyte reaction affect the battery 1, Yong Quan 1 new energy materials M1 Tianjin: Tianjin University press, 2000, 12: 32 characteristics. High ionic conductivity is required at high and low temperatures, on the pos

31、itive and negative polesOne hundred and fourteenBe resistant to electrochemical oxidation,. Goodpermeability to electrodes. For this purpose, cyclic carbonates such as ethylene carbonate, propylene carbonate and chain carbon are generally usedAn acid ester, such as carbonic acid two methyl ester, ca

32、rbonic acid two ethyl ester and ethyl carbonate, is used as a mixed solvent to dissolve the electrolyte salt, and the electrolyte is madeinto an electrolyte. The electrolyte salt of inorganic salt and organic salt, inorganic salt with lithium perchlorate (only used in disposable lithium ion batterie

33、s), lithium tetrafluoroborate, six fluorine lithium arsenate and six fluorine lithium phosphate, the six most commonly used lithium fluoride. The organic salt has three fluorine methyl sulfonic acid lithium, three fluorine methyl sulfonic acid, aminolithium and so on. Electrolyte actual twoA liquid electrolyte in which the monomer is