Facile synthesis of cobalt oxide and graphene nanosheets nanocomposite for aqueous supercapacitor application

Facile synthesis of NiTe2-Co2Te2@rGO nanocomposite for high-performance hybrid supercapacitor

“…In both spectra, the band at 1555 cm −1 indicates the tensile vibration of the sp 2 hybrid plate, denoted G band, and represents the graphite structure. The band at 1324 cm −1 indicates the defect of crystal lattices of sp 3 carbon atoms, which is characterized by the D band 31 . The Raman spectra of NiTe 2 -Co 2 Te 2 @rGO displayed a blue shift in G and D-band as compared to the GO spectrum.…”

Perspective Chapter: Graphene Based Nanocomposites for Supercapacitor Electrodes

“…Co 3 O 4 is one of the extensively investigated transition metal oxides for supercapacitor applications because of its long-term cycle performance, wide surface area, high conductivity, superior corrosion resistance, and natural availability [41][42][43][44][45]. However, Co 3 O 4 has weaker electronic conductivity dramatically reduces its practical applicability.…”

High-performance asymmetric supercapacitor based on a CdCO3/CdO/Co3O4 composite supported on Ni foam – part II: a three-electrode electrochemical study

“…: binder-free electrode design and nanostructured current collector design to provide efficient electron pathways for charge transport, 10 synergistic effects of multiple-phase metal oxides leading to a higher electronic conductivity than those of monometallic oxides 13,27,28 and combining the active material with carbonaceous materials (or other conductive material), to enhance the electronic conductivity. 30,31,35…”

“…9,12,27 Among them, Co 3 O 4 is seen as promising candidate owing to its: low-cost, easy synthesis, environmental friendly nature, excellent pseudo-capacitive properties (exhibiting large number of faradaic reactions among Co 2+ /Co 3+ and Co 3+ /Co 4+ , 12 high specic capacitance (theoretical capacitance of ∼3562 F g −1 ), structure, morphology, large surface area and electrochemical applications. 13,[27][28][29][30][31][32][33] However, its low electrical conductivity, low electrochemical reversibility and low cycle life largely decrease its practical capacity and rate performance, and then power and energy densities are far from commercial requirements. 12,24,28 34 However, the challenge in using the above mentioned TMC and TMO compounds as SC active materials is their poor electronic conductivity.…”

“…: binder-free electrode design and nanostructured current collector design to provide efficient electron pathways for charge transport, 10 synergistic effects of multiple-phase metal oxides leading to a higher electronic conductivity than those of monometallic oxides 13,27,28 and combining the active material with carbonaceous materials (or other conductive material), to enhance the electronic conductivity. 30,31,35 An important reported optoelectronic material is constituted by cadmium oxide (CdO). [36][37][38][39] It is a post-transition metal oxide (PTMO) that crystallizes in the rock salt structure (fcc), and is characterized to exhibit a high electrical conductivity (ca.…”