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This Defense Intelligence Reference Document from the Defense Intelligence Agency, dated 1 November 2010, was one of a series of advanced technology reports produced in FY 2010 under the Advanced Aerospace Weapons System Applications (AAWSA) Program. It reviews ultracapacitors as energy and power storage devices. It covers how they work, their materials, their commercial and military uses, and new developments such as carbon nanotubes, thin films and magnetic capacitors. It concludes that the U.S. government must understand and adopt advanced ultracapacitors.
UNCLASSIFIED//FOR OFFICIO k YE'lii a••k>/ leading alternative candidates for asymmetric ultracaps. Using a pseudocapacitive design will most likely not be able to deliver the cycle life of a symmetric ultracap, but it may be possible to achieve tens of thousands of cycles out of a battery-like electrode. Better capacitance and higher operating voltage of the asymmetric electrode design allow ultracapacitors to begin approaching batteries in terms of energy density. Additional ultracapacitor improvements will come from materials and cell design. Cell design factors include optimization and assembly techniques. Thinner electrodes and current collectors will be one of the primary paths for better performance. Electrolytes that provide cell voltages of at least 3 volts will be standard. Improvements such as these will likely lead to improvements in commercially available ultracaps from 4 Wh/kg to 5-6 Wh/kg." 12 UNCLASSIFIED//COR QFFICI0k Wfilii a••LY
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Report, from the dia collection. The PDF is mirrored here; the original link is above. 34 pages are in the text index: search them above, or from the library's search.