Eighties from the twentieth century with the rapid development of electronic technologies, the pace of progress of human civilization in a variety of electronic devices rely on rapid growth, with the rapid development of the information age, this dependence is growing. The constraints of these new systems for high performance electronics is a major obstacle to the development of food. In particular civil portable electronic devices are in the direction smaller and lighter, which requires the provision of energy to the Laptop battery by looking at the advantages: small size, lightness, high specific energy, long life the maintenance, no pollution. Currently portable mobile communications systems for positioning, laptops for portable electronic applications on behalf of the equipment are all made on the battery from the increased demand. The evolving system requirements and electronic information of the time, the power must be adapted to the needs of scientific and technological development.
Lithium, atomic number 3, located on the first main group of the periodic table of the first, the lightest known metal atom (6.9 4), the electrode potential more negative (-3.045V), the element name derived from the Greek man was meant to “stone”. 1817 Swiss scientist Afu Cong Wei penetrating analysis revealed that lithium career-long. Because of its potential more negative, with the exact composition of material for battery cathodes coupled with superior electrical performance. This has led the world in a great attention of researchers, from the twentieth century, since the study of seventy, the battery – batteries of manganese dioxide, lithium – cells to sulfur dioxide, lithium — thionyl chloride lithium battery in the Dell XPS M140 battery to become the most widely used three types of system, the range of products, as well as dozens.
Lithium – Manganese Dioxide Battery features:
1, relatively inexpensive: the positive active material and using manganese dioxide electrolytic manganese dioxide, a cathode of lithium battery active material of a relatively inexpensive and can be widely promoted.
2, good battery performance: its energy is dry 5 ~ 10 times (approximately 230Wh/kg
Or 500Wh / L), the charging voltage of 2.8 V, the discharge voltage is relatively stable. -40 ~ 50 ℃ in the work environment;
3, long battery life: Store at room temperature and under the condition of the range of more than 10 years, the annual capacity of about 1% lower;
4, safety and reliability of the battery: The battery storage and offloading in the process of non-precipitation of gas, safety, good;
5 size, variety of battery: batteries, including button, column, rectangular three categories, each category there are different and the structure of the hp F4809A battery capacity of a few tens of milliamps to hundreds of security in range. Therefore, to meet a variety of applications.
Development of Lithium – Manganese Dioxide Battery importance of the study
Because – system of lithium-manganese dioxide, using non-aqueous organic electrolyte, the viscosity at low temperature, conductivity decreased sharply, Li-MN02 at low temperature can only be a small power output, even if the battery design Structural change, still unable to improve the battery system of the kind of performance at low temperature. This has seriously hampered the system in civilian areas. However, due to lithium – sulfur dioxide and lithium – thionyl batteries acyl, with the extension of storage time, increases in current production and use of environmental temperature decreased, the surface electrode to form a dense passive film at the battery when its use will be apparent voltage is lagging, according to the different latency can be as long as 10 minutes, plus two battery types are all security issues: lithium – thionyl chloride sony VGP-BPS2A battery system, caused by the misuse of the battery when the battery temperature, discharge cathode produces sulfur and lithium exothermic reaction occurs, or the lithium-carbon material in May be integrated with thionyl chloride or sulfur violent exothermic reaction occurred without battery makes the security system – system of lithium sulfur dioxide battery, the internal pressure inherent when using the battery would cause excessive explosion or leakage of sulfur dioxide gas, there is less security problems. The United States has been the use of lithium – The lithium-sulfur dioxide and – batteries thionyl chloride to threaten the safety of these incidents appear to reports, the twenty-century, first to the growing importance on the environmental protection and system reliability, security and good Lithium – 2 oxidation of the battery system, further study will be the priorities for research on lithium batteries.
Research and development trend of domestic and foreign
Europe and the United States in the mid-nineties the transfer of research center on the energy of gravity when Lithium – Manganese Dioxide Battery began to be taken seriously. Column was originally a series of small models of batteries, then the market interested in high technology apple A1078 battery capacity has made remarkable progress. Before the widespread use of the United States in the evolution of Canadian society Technology Blue Star, Ultralife Battery Co., Ltd., New York
Hternacell produced and lithium – battery manganese dioxide, and the study could provide greater capacity and power than the specific batteries. United States of America
Uitralife Lithium Battery Co., Ltd. – battery manganese dioxide in the comprehensive study, now in the same volume conditions, lithium – lithium manganese dioxide battery that – more than 50% cells of sulfur dioxide to provide energy to break the researchers over the years that lithium – not as good as the lithium-manganese dioxide – batteries sulfur dioxide greater than the energy perspective.
China momentum created by the late Ah Lithium – Manganese Dioxide Battery self-work development research to develop a series of cylindrical lithium – manganese dioxide lithium batteries and a range of Button – batteries of manganese dioxide, in a number of major research institutes generally focus on high specific lithium – manganese dioxide cell research, book-lithium type – batteries of manganese dioxide in subsea applications, special areas of application of advanced exploration technology base. A typical technical success are: lithium-Type Book – The batteries of manganese dioxide can be 1mm below – Lithium Manganese Dioxide specific power to achieve and exceed 580W/kg; Lithium – Manganese Dioxide battery weight of ‘energy to achieve and exceed 300Wh / kg.
Lithium – manganese dioxide battery is a lithium battery in the century 21st, the high reliability of the most promising, and pollution from chemical energy, with the development of nano-materials, manufacturing technology, and low viscosity, security, several good organic electrolyte systems further study, lithium – chemical properties of manganese dioxide battery, there will be a greater degree of improvement in the establishment of an energy, power high light-based, features a new micro-electro-chemical, and improve our high-tech electronic products under the VGP-BPS10 condition of market competitiveness.