Electrochemical Capacitors for Energy Management

TL;DR: Graphene hydrogel/nickel foam composite electrodes for high-rate electrochemical capacitors are produced by reduction of an aqueous dispersion of graphene oxide in a nickel foam and exhibits highrate performance.

TL;DR: In this article, mesoporous NiCo 2 S 4 nanoparticles were used as a supercapacitor electrode material to achieve high specific capacitance (1440 F g −1 at 3 ǫg −1 ) after 250 cycles, exceptional rate capability (75.1% capacity retention from 2 to 50 g − 1 ) and cycling stability (107.9% of initial capacity retention for 1000 cycles).

TL;DR: Energy storage on paper: paper-based, all-solid-state, and flexible supercapacitors were fabricated, demonstrating its efficient energy management in self-powered nanosystems.

TL;DR: Full supercapacitor devices based on the GF + Co3O4/PEDOT-MnO2 as positive electrodes exhibit the best performance compared to other three counterparts due to an optimal design of structure and a synergistic effect.

TL;DR: In this article, the performance data of conventional and especially designed thiophene-based conducting polymers for use as positive and negative electrodes in n/p type supercapacitors is summarized.

TL;DR: In this paper, a hybrid capacitor in neutral KCl aqueous electrolyte, which consists of amorphous manganese oxide (a-MnO 2.nH 2 O) as a cathode and activated carbon as an anode, was reported.

TL;DR: In this article, a solvent-free green electrolyte for high-voltage hybrid supercapacitors was developed, and the cyclability of a laboratory scale cell with electrode mass loading sized for practical uses was tested at 60°C over 16,000 galvanostatic charge-discharge cycles at 10 µm −2 in the 1.5 and 3.6 µm voltage range.

TL;DR: In this article, a mathematical model of heterogeneous electrochemical supercapacitors (HES) is proposed which makes it possible to develop capacitors with optimal designs and make calculations of their energy, capacity, and power parameters.