Functionalization of graphene-based materials using chemical moieties not only modify the electronic structure of the underlying graphene but also enable in limited enhancement of targeted properties.Surface modificat...Functionalization of graphene-based materials using chemical moieties not only modify the electronic structure of the underlying graphene but also enable in limited enhancement of targeted properties.Surface modification of graphene-based materials using other nanostructures enhances the effective properties by minimally modifying the properties of pristine graphene backbone.In this pursuit,we have synthesized bio-inspired hierarchical nanostructures based on Ni–Co layered double hydroxide on reduced graphene oxide core–shells using template based wet chemical approach.The material synthesized have been characterized structurally and electrochemically.The fabricated dendritic morphology of the composite delivers a high specific capacity of 1056 Cg^(−1).A cost effective solid state hybrid supercapacitor device was also fabricated using the synthesized electrode material which shows excellent performance with high energy density and fast charging capability.展开更多
Functional materials with designer morphologies are anticipated to be the next generation materials for energy storage applications.In this manuscript,we have developed a holistic approach to enhance the surface area ...Functional materials with designer morphologies are anticipated to be the next generation materials for energy storage applications.In this manuscript,we have developed a holistic approach to enhance the surface area and hence the properties of nanostructures by synthesizing coronal nanohybrids of graphene.These nanohybrids provide distinctive advantages in terms of performance and stability over vertically stacked nanocomposites reported in literature.Various double hydroxide materials self-assembled as coronal lamellae on graphene shells have been synthesized and systematically studied.These coronal nanohybrids result in about a threefold increase in energy storage capacity as compared to their traditionally synthesized nanocomposite counterparts.The 3D graphene-based nanofibrils in the synthesized coronal nanohybrids provide mechanical support and connect the nodes of the double hydroxide lattices to inhibit restacking.Complex morphologies such as coronal nanostructures increase the interaction surface of the nanostructure significantly.Such an approach is also expected to bring a paradigm shift in development of functional materials for various applications such as sensors,energy storage,and catalysis.展开更多
文摘Functionalization of graphene-based materials using chemical moieties not only modify the electronic structure of the underlying graphene but also enable in limited enhancement of targeted properties.Surface modification of graphene-based materials using other nanostructures enhances the effective properties by minimally modifying the properties of pristine graphene backbone.In this pursuit,we have synthesized bio-inspired hierarchical nanostructures based on Ni–Co layered double hydroxide on reduced graphene oxide core–shells using template based wet chemical approach.The material synthesized have been characterized structurally and electrochemically.The fabricated dendritic morphology of the composite delivers a high specific capacity of 1056 Cg^(−1).A cost effective solid state hybrid supercapacitor device was also fabricated using the synthesized electrode material which shows excellent performance with high energy density and fast charging capability.
文摘Functional materials with designer morphologies are anticipated to be the next generation materials for energy storage applications.In this manuscript,we have developed a holistic approach to enhance the surface area and hence the properties of nanostructures by synthesizing coronal nanohybrids of graphene.These nanohybrids provide distinctive advantages in terms of performance and stability over vertically stacked nanocomposites reported in literature.Various double hydroxide materials self-assembled as coronal lamellae on graphene shells have been synthesized and systematically studied.These coronal nanohybrids result in about a threefold increase in energy storage capacity as compared to their traditionally synthesized nanocomposite counterparts.The 3D graphene-based nanofibrils in the synthesized coronal nanohybrids provide mechanical support and connect the nodes of the double hydroxide lattices to inhibit restacking.Complex morphologies such as coronal nanostructures increase the interaction surface of the nanostructure significantly.Such an approach is also expected to bring a paradigm shift in development of functional materials for various applications such as sensors,energy storage,and catalysis.
