Freeze gelation 3D printing of rGO-CuCo2S4 nanocomposite for high-performance supercapacitor electrodes

High electrochemical performance of ink solution based on manganese cobalt sulfide/reduced graphene oxide nano-composites for supercapacitor electrode materials

“…The model includes: an equivalent series resistance ( R s ); a resistance due to the redox reactions at the electrode/electrolyte interface ( R ct ); a leak resistance ( R L ); a double-layer capacitance ( C DL ); a constant phase element (CPE L ) of non-ideal capacitor made from the junction between the active material and the graphite substrate; and a Warburg diffusion element ( W ) – representing the resistance of ionic diffusion in the electrolyte. 35 With this model, very low values of R s (1.087 Ω) and R ct (0.025 Ω) indicate good conductivities of MCS/rGO, along with easy ion exchange for reversible redox reactions. Thereby, the reversible redox reactions occur easily and repeat steadily during the charge/discharge process.…”

“…In our previous works, 32–35 high quality porous CuCo 2 S 4 –rGO electrode material for SCs was successfully fabricated by 3D printing technique. CuCo 2 S 4 NPs were in situ grown on the surface of GO sheets under hydrothermal condition.…”

Facile synthesis of MnCo2S4 nanosheets as a binder-free electrode material for high performance supercapacitor applications

“…This retention rate of the C sp value is similar to that of our previous work for a porous CuCo 2 S 4 /rGO nano-composite electrode although this porous CuCo 2 S 4 /rGO was prepared by a more complicated freeze gelation 3D printing. 51…”

Construction of CoMo2S4 Nanorods/Nanosheets Electrodes with Enhanced Electrochemical Properties for Asymmetric Pseudocapacitors

“…Most studies focused on NiCo 2 S 4 , CoNi 2 S 4 or CuCo 2 S 4 materials for high storage SCs, and few reports on Co-Mo-S (CMS) BTMSs. [16][17][18] CMS consists of [MoS 2 ] layers of edge-sharing octahedral and is separated by a layer in which Co 2 + is occupied in half cation sites. [19] The structure is conducive to the insertion/extraction of metal ions, and the electronic conductivity of Mo is higher than that of Ni.…”