High-performance aqueous asymmetric electrochemical capacitors based on graphene oxide/cobalt(ii)-tetrapyrazinoporphyrazine hybrids

Abstract

A novel asymmetric electrochemical capacitor (AEC) with high energy and power densities has been developed using a graphene oxide/cobalt(II)tetrapyrazinoporphyrazine composite (GO/CoTPyzPz) as the positive electrode and graphene oxide/carbon black (GO/CB) as the negative electrode in a neutral aqueous Na 2 SO 4 electrolyte. The excellent specific capacitance, energy and power densities ($500 F g

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

“…This we attribute to the uniform pore distribution which functions as a series of channels and may promote ion intercalation into these pores, creating more nano-pores after many CD cycle leading to increase in the efficiency. The initial decay may be related to the loss of adhesion between some of the active materials with the current collector during the continuous cycling process [40]. The specific capacitance and energy density are plotted as a function of current density and are shown in Figure 5 (e).…”

CMOS compatible on-chip decoupling capacitor based on vertically aligned carbon nanofibers

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Molecular mechanism of helicase on graphene-based hybridization reaction platform for microRNA detection

“…Among different existing nanomaterials used for miRNA detection, graphene oxide (GO) can be functionalized as an ideal transducing element thanks to high water dispersibility, stable affinity toward hydrophobic and/or pconjugated biomolecules, and the capability of uorescence quenching. [22][23][24] Former studies showed that GO could bind and quench dye-labeled single-stranded DNA (ssDNA) probes, while it had less binding affinity toward dsDNA or hybrids of DNA/ RNA. 25,26 Helicases are enzymes conserved from bacteria to humans that use ATP-driven motor force to unwind double-stranded DNA or RNA.…”