This paper investigates the characterization of an electric double-layer capacitor (EDLC). In this study, 300 F and 400 EDLC supercapacitors are connected in a circuit laboratory experiment to produce their charge/discharge profiles at constant current. The acquired were used determine mathematical parameters EDLCs using “Faranda model”, or “two-branch EDLC. extracted from equivalent model then...

This paper describes the design of a CMOS capacitor-ratio-independent and gain-insensitive algorithmic analog-to-digital (A/D) converter. Using the fully differential switched-capacitor technique, the A/D converter is insensitive to capacitor-ratio accuracy as well as finite gain and offset voltage of operational amplifiers. The switch-induced error voltage becomes the only major error source, ...

AbstructThis paper describes the design of a CMOS capacitor-ratio-independent and gain-insensitive algorithmic analog-to-digital (A/D) converter. Using the fully differential switched-capacitor technique, the A/D converter is insensitive to capacitor-ratio accuracy as well as finite gain and offset voltage of operational amplifiers. The switch-induced error voltage becomes the only major error ...

Discrete layering of high power Li4Ti5O12 and capacity SnO2 in a through-thickness multi-layered composite electrode was achieved using layer-by-layer spray printing approach order to explore new capacity-power combinations for lithium ion based electrochemical energy storage. Electrochemical behavior electrodes optimized as function the thickness discrete layer, range 2 6 µm, interleaved betwe...

Thin silicon nitride (Si3N4) films deposited using plasma-enhanced chemical deposition (PECVD) method have been used as metalinsulator-metal (MIM) capacitor dielectric for GaAs heterojunction bipolar transistor (HBT) technology. The characteristics of the films, which were deposited at 300C, were found to be dependent on how the PECVD film was deposited. A silicon nitride film deposited as a mu...

We investigated the use of fluorine free ionic liquids (ILs) containing the tricyanomethanide anion ([C(CN)3]) as an electrolyte in electrochemical double-layer capacitors (EDLCs). Three cations were used; 1-butyl-3-methylimidazolium ([Im1,4]), N-butyl-N-methylpyrrolidinium ([Pyr1,4]) and N-butyl-N-methylpiperidinium ([Pip1,4]). Their physicochemical properties are discussed alongside with thei...