Fabrication of Graphene-Fe3O4-Polypyrrole based ternary material as an electrode for Pseudocapacitor application

Challenges and Opportunities: Conducting Polymer‐Graphene based Nanocomposites of Metal Oxides and Metal Sulfides for Supercapacitors

“…The remarkable output of the RGFP is due to its morphology, the role of Fe 3 O 4 in restacking prevention of rGO & enhancement of the active surface area, the combined impact of the individual constituents and the pseudo behaviour of the ternary composite. [82] The ternary (rGO-PANI-NiMoS 4 ) composite with a 3D structural hierarchy was synthesized through in-situ polymerization (chemical oxidation) of aniline on GO's surface, accompanied by a hydrothermal process. The grafted polyaniline serves dual purposes by facilitating additional Faradaic redox reactions and providing structural support to both rGO and NiMoS 4 , mitigating self-stacking issues in ion transport routes.…”

“…The RGFP composite (at 10 A g −1 ) maintained 89 % of the original capacitance despite facing 6000 cycles. The remarkable output of the RGFP is due to its morphology, the role of Fe 3 O 4 in restacking prevention of rGO & enhancement of the active surface area, the combined impact of the individual constituents and the pseudo behaviour of the ternary composite [82] …”

Interface Engineering of Space-Confined Fe3O4/FeS Heterostructures: Synergistic Effect and Ultrastable Li Storage

“…14,15 In recent years, transition-metal compound anodes featuring nanostructures (such as nanoparticles, 16−20 nanorods, 21 and nanosheets 22,23 ) have received extensive attention owing to their advantage of superior theoretical specific capacity on the basis of the conversion-type reaction mechanism. 21 Particularly, iron-based compounds, such as Fe 3 O 4 (926 mA h• g −1 ) 24,25 and FeS (609 mA h•g −1 ), 26 have become a research hotspot because of their high natural abundance, 27,28 economic benefit, 29,30 and environmental compatibility. 31,32 However, what must be noted is that the inferior electronic and ionic conductivity as well as the violent volumetric effect during the Li insertion/extraction process will induce the sluggish electron and ion transport and the fracture or pulverization of the electrode structure, giving rise to rapid capacity fading.…”

“…In recent years, transition-metal compound anodes featuring nanostructures (such as nanoparticles, − nanorods, and nanosheets , ) have received extensive attention owing to their advantage of superior theoretical specific capacity on the basis of the conversion-type reaction mechanism . Particularly, iron-based compounds, such as Fe 3 O 4 (926 mA h·g –1 ) , and FeS (609 mA h·g –1 ), have become a research hotspot because of their high natural abundance, , economic benefit, , and environmental compatibility. , However, what must be noted is that the inferior electronic and ionic conductivity as well as the violent volumetric effect during the Li insertion/extraction process will induce the sluggish electron and ion transport and the fracture or pulverization of the electrode structure, giving rise to rapid capacity fading. − To resolve these issues, many research studies have been devoted to engineer nanostructured materials with controlled architectures or decorate well-designed hybrids with optimized components. − Herein, the construction of the heterogeneous interface of iron oxide/iron sulfide is an available strategy, which can provide the synergistic physicochemical properties of each pure component. − To be precise, due to the synergistic interaction of the heterogeneous interface, not only the electron transfer rate can be improved but also the structural stability of the material can be enhanced. − It is reported that the Fe 3 O 4 /FeS heterogeneous material exhibits enhanced lithium/sodium storage performance along with excellent rate properties and stable cycle characteristics. , Nevertheless, it should be clear that though Fe 3 O 4 /FeS fully utilizes the senior theoretical capacity of Fe 3 O 4 and the great cycling stability of FeS, the problem of volume expansion during the lithium storage process is still not addressed effectively.…”

Fabrication of a 3D bacterial cellulose intercalated MoS2@rGO nanocomposite for high performance supercapacitors

“…Supercapacitors, as high-performance energy storage devices, have been widely used due to their high power density, longterm cycling stability and rapid charge/discharge rate. [1][2][3] There are two types of supercapacitors based on the mechanism of charge storage: the electric double layer capacitor and pseudocapacitor. The pseudocapacitor, which has higher specific capacitance, mainly depends on the reversible redox reaction of the active component in electrode materials.…”