Source: EPCI e-Symposium PCNS paper
by Vlasta Sedlakova, Josef Sikula, Jiri Majzner, Petr Sedlak
CEITEC, Brno University of Technology, Brno, Czech Republic
presented by V.Sedlakova at the 2nd PCNS 10-13th September 2019, Bucharest, Romania as paper 3.4.
Degradation of supercapacitor (SC) is evaluated during aging tests. Continuous current cycling for 100% energy and 75% energy and discontinuous cycling for 75% energy, respectively, was performed on two different types of supercapacitors. SC parameters are determined before the aging test, and during 6×105 cycles of all three current cycling tests.
Capacitance fading within the current cycling tests is correlated to the results of capacitance change within the calendar life tests at different temperatures and operating voltage. Two studied SCs technologies show different sensitivity to temperature and electric field during the calendar tests as well as slightly different evolution of capacitance during cycling. We show that the capacitance fading is driven by two mechanisms. (more…)