High pulse power system through engineering battery-capacitor combination

The advancing technology of thin, lightweight, and high power ultracapacitor has been one of the most exciting and important developments in electronic components. The technology provides a new dimension for engineers and designers to manage the power and energy used in electronic products. The batteries will not have to be oversized to accommodate a peak power demand. A combination of battery and ultracapacitor (hybrid power system) can improve the battery capability for power peak and also extend battery lifetime. In this paper, the author presents an ultra-thin hydra-amorphous ruthenium oxide ultracapacitor. The unique electrochemical characteristics of ultracapacitor are able to provide a much higher pulse current capability over the battery system. The ultracapacitor with 0.1 cm thick, 14 cm/sup 2/ size, and 2.6 g weight has the capability to deliver over 30 W pulse peak. By combination of ultracapacitor and battery, the pulse performance of traditional alkaline primary battery can be significantly improved.