Electrochemical capacitors have generated interest as possible components of future power sources where pulse loads are required. The operating temperature could become a limiting factor for application of these capacitors, to military systems. To establish a baseline, several of the commercially available electrochemical capacitors were tested at temperature regimes required for military applications. Of special interest were the temperature effects at high and low temperature extremes, 55°C and40°C, respectively. The temperature effects were measured against performance at room temperature. Measured parameters included the capacity, efficiency, open circuit voltage (OCV), leakage current and internal resistance. The effects of temperature anddischarge rate on each capacitor, based on its performance, were analyzed. The results are discussed and related to the particular capacitor chemistry and manufacturing technology. Possible military applications are discussed.
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