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The military uses millions of batteries and often these are disposed of with much life left within them as you do not want to use batteries with less than 100% capacity in critical military situation, such as night vision goggles. If you would like these batteries it would have to be arranged that they be picked up in Iraq and Afghanistan on a regular basis.
New Nano-Battery Technology Developed at Tel Aviv University May Eliminate Fire Hazards Innovative nano-battery technology developed at Tel Aviv University for fast charge/discharge batteries, would provide an alternative much higher density source of power for the laptop, without the fire hazards associated with current lithium-based batteries
"Now, new nano battery technology developed by research teams led by Prof. Menachem Nathan of the Tel Aviv University`s Fleischmann Faculty of Engineering and by professors Emanuel Peled and Dina Golodnitsky of the University`s School of Chemistry, could eliminate this fire hazard by preventing overheating. The new device comprises a substantial number of miniature batteries, about 30,000 on an area as small as one square centimeter, all connected in parallel. This architecture provides a high output of electrical power, without the risk of overheating, a major cause of flammability in laptop computer and other mobile batteries. Professors Nathan, Peled and Golodnitsky have developed a solution that combines the low internal resistance characteristics of a thin film battery with the high capacity of regular chargeable lithium batteries. Using ingenuous and proprietary coating technologies, tens of thousands of miniature lithium batteries are laid out in parallel within a half mm thick non-conducting substrate. The substrate volume is thus used to increase charge capacity per footprint, up to 10mAh/cm2, more than 80 times over similar-area, similar cathode thickness planar thin film batteries. Such nano-battery assemblies were tested in the lab for hundreds of charge/discharge cycles without loss of capacity and stability. An extensive patent portfolio covers the Tel Aviv University nano-battery technology worldwide. The technology is available for licensing through Ramot at Tel Aviv University, the technology transfer arm of the university." From Tel Aviv University Web News