Electrochemical Properties of Graphene Oxide Nanoribbons/Polypyrrole Nanocomposites

Abstract

Graphene is a highly studied material due to its unique electrical, optical, and mechanical properties. Graphene is widely applied in the field of energy such as in batteries, supercapacitors, and solar cells. The properties of graphene can be further improved by making nanocomposites with conducting polymers. In this work, graphene oxide nanoribbons (GONRs) were synthesized by unzipping multiwall carbon nanotubes. Graphene nanoribbons were used to make nanocomposites with polypyrrole for energy storage applications. The synthesized nanocomposites were structurally and electrochemically characterized to understand their structure and electrochemical properties. The electrochemical characterizations of these nanocomposites were carried out using cyclic voltammetry. The specific capacitance of the nanocomposites was observed to decrease with increasing scan rates. The highest specific capacitance of 2066 F/g was observed using cyclic voltammetry for the optimized nanocomposite of GONR and polypyrrole. Our study suggests that the electrochemical properties of graphene or polypyrrole can be improved by making their composites and that they could be successfully used as electrode materials for energy storage applications. This study can also be extended to the self-assembly of other conducting polymers and graphene nanoribbons through a simple route for various other applications.

Investigations of 2D Ti 3 C 2 ( MXene )‐ CoCr 2 O 4 nanocomposite as an efficient electrode material for electrochemical supercapacitors

“…Using modified working electrode (MXene/CoCr 2 O 4 ), cyclic voltammetry analysis was performed in both IM KOH and 0.1 M H 2 SO 4 (acidic as well as basic) electrolyte for observing electrode charge storage capacity. Nanocomposite based electrode material analysis in both forward as well as reverse direction corresponds to anodic and cathodic peaks indicating redox reactions occurrence at electrode surface 88,89 . Working electrode specific capacitance calculated using equation C sp = Q /2Δ V .…”

“…anodic and cathodic peaks indicating redox reactions occurrence at electrode surface. 88,89 Working electrode specific capacitance calculated using equation C sp = Q/2ΔV. (∂ϑ/∂t).m 90 where C sp is the specific capacitance (Fg À1 ), Q is the area under curve (cm 2 ), ΔV is the potential window (volts), ∂ϑ/∂t is the scan rate (mV s À1 ), and m is the electrode mass (grams).…”

Conducting Polymer 1-D Composites: Formation, Structure and Application

“…Recently, graphene nanoribbons were used to make nanocomposites with polypyrrole [40]. Graphene nanoribbons were synthesized by unzipping and exfoliation of MWCNTs, while polypyrrole was prepared using a chemical polymerization process in the presence of graphene oxide nanoribbons.…”

An effective utilization of MXene and its effect on electromagnetic interference shielding: flexible, free-standing and thermally conductive composite from MXene–PAT–poly(p-aminophenol)–polyaniline co-polymer

“…peaks suggest the amorphous nature of PPy. [63][64][65] The broad peak that appears between (16.5 and 30) assures the existence of polythiophene. 66,67 The characteristic 2q at (5.94, 8.98, 18.57, 19.84, and 38.38) indicate the presence of u-MXene, and other peaks conrm the u-MXene intercalates well with polymer and FCCNW matrix.…”