Friday, February 27, 2009

Manganese dioxide battery(b)

Lithium - manganese dioxide hp laptop battery characteristics:
1, relatively low price of: manganese dioxide cathode active material the use of electrolytic manganese dioxide, a lithium battery cathode active material of a relatively low-cost, large scale application.
2, battery electric performance: its specific energy hp ev088aa, hp 417066-001 batteries are of the 5 ~ 10 times (about 230Wh/kg or 500Wh / L), load voltage of 2.8V, relatively stable discharge voltage. Can be -40 ~ 50 ℃ in the scope of work;
3, long-life battery storage: at room temperature under the condition of the battery storage life of more than 10 years, the annual capacity of about 1 percent lower;
4, safe and reliable hp f4486b, hp cgr-b1870ae battery: the battery in the storage and discharge without gas precipitation process, security is good;
5, the battery a wide variety: batteries including button, column, rectangular three categories, each category there are different size and structure of the battery capacity from dozens to hundreds of milliamperes range when Simon. Therefore meet the requirements of a variety of applications.
The development of lithium - manganese dioxide battery research significance
Because of lithium - manganese dioxide bta0302001, hp pavilion zd7000 battery system using non-aqueous organic electrolyte, at low temperature viscosity, conductivity dropped, resulting in Li-Mn02 batteries at low temperature only a small power output, even in battery design structural change, still can not essentially improve low temperature performance of the battery system. This has seriously hampered the system in the civilian fields. However, because of lithium - sulfur dioxide batteries and lithium - thionyl acid battery, with the storage time, the increase in output current and the use of lower ambient temperature in the electrode surface to form dense passive film, resulting in the use of battery and there will be obvious voltage lags behind, according to different time lag may be as long as ten minutes, in addition there are two types of battery safety problem: lithium - thionyl chloride battery system, when the battery caused by improper use of the battery temperature increases, the product of sulfur cathode discharge exothermic reaction occurred and lithium, or lithium-carbon inserts may have with thionyl chloride or sulfur intense exothermic reaction occurred in the battery system makes the security less; lithium - sulfur dioxide battery system itself exist internal pressure, when the battery misconduct will result in explosion or sulfur dioxide gas leak, there is security problem worse. The United States has been the use of lithium - sulfur dioxide batteries and lithium - thionyl chloride hp pp2182d, hp pp2182l batteries appear to endanger the physical safety incidents reported, with the twenty-first century there is growing attention to environmental protection and system safe and reliable, so the safety of lithium-good — dioxide battery system, further study will be the first lithium battery research.