Evaluation of supercapacitors for space applications under thermal vacuum conditions

• Published in: Journal of power sources Vol. 379; pp. 155 - 159
• Main Authors: Chin, Keith C., Green, Nelson W., Brandon, Erik J.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.03.2018
• Subjects: Double-layer capacitor; Electrochemical capacitor; Space power; Supercapacitor; Thermal vacuum testing; Ultracapacitor; Supercapacitor; Double-layer capacitor; Space power; Ultracapacitor; Electrochemical capacitor; Thermal vacuum testing
• ISSN: 0378-7753; 1873-2755
• DOI: 10.1016/j.jpowsour.2018.01.038

Commercially available supercapacitor cells from three separate vendors were evaluated for use in a space environment using thermal vacuum (Tvac) testing. Standard commercial cells are not hermetically sealed, but feature crimp or double seam seals between the header and the can, which may not maintain an adequate seal under vacuum. Cells were placed in a small vacuum chamber, and cycled between three separate temperature set points. Charging and discharging of cells was executed following each temperature soak, to confirm there was no significant impact on performance. A final electrical performance check, visual inspection and mass check following testing were also performed, to confirm the integrity of the cells had not been compromised during exposure to thermal cycling under vacuum. All cells tested were found to survive this testing protocol and exhibited no significant impact on electrical performance. [Display omitted] •Interest in supercapacitors for space applications is growing.•Commercial supercapacitor cells were evaluated under thermal vacuum conditions.•Charging and discharging of cells was executed following each temperature soak.•Cells from three different vendors survived this testing protocol.•Exposure to these conditions resulted in no significant impact on performance.