Porous graphene–NiCo₂O₄ nanorod hybrid composite as a high performance supercapacitor electrode material

Abstract

PGNC composite synthesized via a green route for the development of high performance supercapacitors with high cyclic stability.

A porous graphene–NiFe2O4nanocomposite with high electrochemical performance and high cycling stability for energy storage applications

“…The cell was fabricated following the procedure adopted in the previous reports. 1,6 First, Toray carbon paper was cut into equal dimensions of 2 Â 2 cm 2 area. The prepared ink was equally deposited onto the carbon paper (2 pieces in which one acts as the anode and the other as cathode) in order to obtain equal mass deposition.…”

“…In order to solve this issue, researchers have tried to incorporate oxides of metals/spinels inside the sheets so as to keep the sheets apart by adding foreign molecules as spacers. [3][4][5][6] In this scenario, spinels are of much interest, as they provide high electrical conductivity owing to their abundance, presence of two metal domains and their environmentally benign nature. [7][8][9] Thus, composites of PG and spinels are expected to provide superior electrochemical properties compared to single oxides due to their high mechanical strength, stability, high electrical conductivity and enhanced physico-chemical properties.…”

“…[7][8][9] Thus, composites of PG and spinels are expected to provide superior electrochemical properties compared to single oxides due to their high mechanical strength, stability, high electrical conductivity and enhanced physico-chemical properties. 6 Many spinels of Ni, such as NiCo 2 O 4 , NiMoO 4 , and NiMn 2 O 4 , with their graphene composites have been utilized as attractive electrode materials for supercapacitors. 6,10 However, not much is explored with regard to the spinel NiFe 2 O 4 and its graphene composites.…”

“…6 Many spinels of Ni, such as NiCo 2 O 4 , NiMoO 4 , and NiMn 2 O 4 , with their graphene composites have been utilized as attractive electrode materials for supercapacitors. 6,10 However, not much is explored with regard to the spinel NiFe 2 O 4 and its graphene composites. [11][12][13] It is known that the cubic spinel structure of NiFe 2 O 4 (NF) possesses stronger bonds between oxygen and metal ions, which makes them more attractive for use in electrochemical energy storage devices.…”

Rhodium doping augments photocatalytic activity of barium titanate: effect of electronic structure engineering

“…7c). 44,45 The deconvoluted peaks of Rh at binding energies 310.10 eV and 314.58 eV can be allotted to the Rh 3d 5/2 and Rh 3d 3/2 spin states, respectively (Fig. 7d).…”