Sandwich-like Ni-Zn hydroxide nanosheets vertically aligned on reduced graphene oxide via MOF templates towards boosting supercapacitive performance

Carbonate doped NiCo-LDH modified with PANI for high performance asymmetric supercapacitors

“…As shown in Fig. 10(a), the outstanding power and energy density of the asymmetric cell assembled with PANI-NCLDH/ CO 3 2− and activated carbon are better than those of many previously reported asymmetric supercapacitors assembled CrystEngComm Paper with LDH composites as cathode materials, such as CNTs/ NiCo LDH//AC, 40 NiZn LDH/rGO, 41 CNTs@NiCo-LDH// AC, 42 NiCo LDH/GNR//AC, 7 NiMn LDH/KCu 7 S 4 //AC, 20 CNT@NiIJOH) 2 //3D GN 3 and GSP-LDH//SGC. 23 In order to further prove the practicability of the device, we used two cells connected in series to light up 88 red LED lights that make up the word "SCU".…”

Self-Assembly of Metal–Organic Frameworks on Graphene Oxide Nanosheets and In Situ Conversion into a Nickel Hydroxide/Graphene Oxide Battery-Type Electrode

“…The fabricated ASC device exhibits a better performance compared with NiZn-OH/rGO//AC (53.7 Wh kg –1 , 825.1 W kg –1 ), Ni/Co-LDH-7:3//AC (32.9 Wh kg –1 , 74.3 W kg –1 ), Li-Co 3 O 4 //NAC (28 Wh kg –1 , 10,600 W kg –1 ), MOF-74-Ni­(OH) 2 -75D//AC (36.2 Wh kg –1 , 436.1 W kg –1 ), Co 3 O 4 //Zn (151 Wh kg –1 , 5662 W kg –1 ), Mn 3 O 4 //Zn (110 Wh kg –1 , 14,100 W kg –1 ), Co 3 O 4 @NiV-LDH//Zn (27.3 Wh kg –1 , 5476 W kg –1 ), H 2 V 3 O 8 /Ge//Zn (168 Wh kg –1 , 34 W kg –1 ), and NiSe 2 /Ni­(OH) 2 //rGO (906 Wh kg –1 , 76.1 W kg –1 ) . As shown in Figure e, the ASC device provides a capacitance retention of 73.08% after 8000 cycles, indicating its excellent cycle stability.…”

Phosphate functionalized CoS nanoparticles coupled with Fe2O3nanocrystals decorated on N,S co-doped porous carbon spheres for advanced hybrid supercapacitors

“…The as-prepared P-NSC/CoS and NSC/Fe 2 O 3 composites were ground with carbon black and polytetrafluoroethylene at a proportion of 8 : 1 : 1 in ethanol. The homogeneous paste (1.5 mg) was pressed on Ni foam (1 × 1 cm 2 ) at 10 MPa and dried at 60 °C for 12 h. The specific capacity ( C 1 , C g −1 ) of P-NSC/CoS and the specific capacitance ( C 2 , F g −1 ) of NSC/Fe 2 O 3 were evaluated using the following formulas: 29,30 C 1 = It / m 1 C 2 = It /( m 1 V )…”