Development of MnO₂/porous carbon microspheres with a partially graphitic structure for high performance supercapacitor electrodes

Abstract

MnO2/porous carbon microspheres with a partially graphitic structure were designed and synthesized for high performance supercapacitor electrode materials.

CVD synthesis of carbon spheres using NiFe-LDHs as catalytic precursors: structural, electrochemical and magnetoresistive properties

“…10,33,37,38 Lower I D /I G ratios can be achieved in the presence of MnO 2 or Ni doping. 39,40 In any case, our results are in accordance with the graphitization trend reported by Nieto-Márquez et al: graphite 4 carbon nanotubes/nanofibers 4 carbon nanospheres 4 activated carbon. 10 A further comparison of all the synthesized spheres in this work can be found in SI 3 (ESI †).…”

Microwave synthesis: Characterization and electrochemical properties of amorphous activated carbon-MnO2 nanocomposite electrodes

“…micro, meso and macroporous) have become attractive and it has inspired efforts to develop hybrids based on the incorporation of TMOs (such as MnO 2 ) into 3D porous network architecture which could be a promising method for enhancing its capacity of the composite materials [22][23][24]. Such hybrids material combined the merits of the double layer capacitance of the porous carbon and pseudocapacitance properties of MnO 2 materials which contribute to the total electrochemical capacitance value of the hybrid electrode material.…”

Asymmetric supercapacitor based on nanostructured graphene foam/polyvinyl alcohol/formaldehyde and activated carbon electrodes

“…The nitrogen adsorption and desorption show type IV isotherm ( Figure 3 (a)) and a corresponding specific surface area value of 610 m 2 g -1 was obtained. The hysteresis loop at a relative pressure P/P 0 of about 0.45-1.0 is attributed to capillary condensation of the mesopores in the solid material [38]. The pore size distribution is shown in Figure 3 sample.…”