Design and fabrication of hollow and filled graphene-based polymeric spheres via core–shell electrospraying

RSC Advances ◽  
2015 ◽  
Vol 5 (111) ◽  
pp. 91147-91157 ◽  
Author(s):  
Leila Haghighi Poudeh ◽  
Burcu Saner Okan ◽  
Jamal Seyyed Monfared Zanjani ◽  
Mehmet Yildiz ◽  
Yusuf Menceloglu
Keyword(s):  
Graphene Oxide ◽  
Three Dimensional ◽  
Core Shell ◽  
Two Dimensional ◽  
One Step ◽  
Graphene Oxide Sheets

Two dimensional graphene oxide sheets are converted into three dimensional (3D) hollow and filled microspheres by using three different carrying polymers through one-step core–shell electrospraying technique without applying any post treatments.

Pseudocapacitance and excellent cyclability of 2,5-dimethoxy-1,4-benzoquinone on graphene

2016 ◽  
Vol 9 (8) ◽  
pp. 2586-2594 ◽  
Author(s):  
Muhammad Boota ◽  
Chi Chen ◽  
Matthieu Bécuwe ◽  
Ling Miao ◽  
Yury Gogotsi
Keyword(s):  
Graphene Oxide ◽  
Hydrothermal Method ◽  
Reduced Graphene Oxide ◽  
Three Dimensional ◽  
Covalent Functionalization ◽  
Redox Active ◽  
Reduced Graphene ◽  
One Step ◽  
Volumetric Capacitance ◽  
Graphene Oxide Sheets

Non-covalent functionalization of 2,5-dimethoxy-1,4-benzoquinone and hydroquinone on reduced graphene oxide sheets led to the formation of a redox-active three-dimensional gel architecture via a one-step hydrothermal method, where the former exhibited high gravimetric and volumetric capacitance and 99% capacitance retention after 25 000 cycles at 50 mV s−1.

Three-dimensional graphene oxide/polypyrrole composite electrodes fabricated by one-step electrodeposition for high performance supercapacitors

2015 ◽  
Vol 3 (27) ◽  
pp. 14445-14457 ◽  
Author(s):  
Jianyun Cao ◽  
Yaming Wang ◽  
Junchen Chen ◽  
Xiaohong Li ◽  
Frank C. Walsh ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
High Performance ◽  
Three Dimensional ◽  
Composite Electrodes ◽  
Ion Diffusion ◽  
One Step ◽  
Supercapacitor Performance ◽  
Polypyrrole Composite ◽  
Fast Ion ◽  
Interconnected Structure

The 3D interconnected structure of the GO/PPy composite ensures fast ion diffusion through the electrode, leading to excellent supercapacitor performance.

Study on the thermal insulation performance of the core–shell skeleton graphene oxide/carbon composite aerogel

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Hongli Liu ◽  
Peng Wang ◽  
Wenjin Yuan ◽  
Hongyan Li
Keyword(s):  
Graphene Oxide ◽  
Solid Phase ◽  
Three Dimensional ◽  
Carbon Aerogel ◽  
Carbon Composite ◽  
Core Shell ◽  
Composite Aerogel ◽  
Dimensional Network ◽  
Heat Shielding ◽  
Insulation Performance

Abstract Phenolic resin (PR) was grafted onto the surface of graphene oxide (GO) through π–π conjugation and chemical bonding. After carbonization, organic compounds turned into carbon layers with a thickness of about 10 nm and coated on the surface of GO formed a core–shell structure. Besides, the adiabatic interface formed during organic carbonization can effectively connect the aerogels into a three-dimensional network. The optimum mass ratio of GO was determined to be 10 wt% in the preparation of the precursor aerogel. The adiabatic interfaces (carbon) between GO lamellae could effectively reduce the solid phase heat transfer in aerogels (thermal conductivity is 0.0457 W m−1 K−1). At the same time, the existence of GO also ensured better mechanical properties of GO/carbon composite aerogel (compressive strength is 2.43 MPa) compared with the pure carbon aerogel (1.52 MPa), demonstrating the excellent heat-shielding performance and mechanical property of GO/carbon aerogel.

THE INFLUENCE OF OXYGEN-CONTAINING FUNCTIONAL GROUPS ON THE SURFACE BEHAVIOR AND ROUGHNESS CHARACTERISTICS OF GRAPHENE OXIDE

NANO ◽  
2013 ◽  
Vol 08 (04) ◽  
pp. 1350045 ◽  
Author(s):  
AHMAD ALLAHBAKHSH ◽  
FARHAD SHARIF ◽  
SAEEDEH MAZINANI
Keyword(s):  
Graphene Oxide ◽  
Functional Groups ◽  
Three Dimensional ◽  
Diffraction Method ◽  
Force Microscopy ◽  
Atomic Force ◽  
Wire Frame ◽  
Stick Model ◽  
The Individual ◽  
Graphene Oxide Sheets

The effects of oxygen-containing functional groups on the surface roughness of graphene oxide are thoroughly studied using three-dimensional atomic force microscopy images, ball-and-stick model and wire-frame view results. Moreover, X-ray diffraction method and Fourier transform infrared spectroscopy are employed for characterizing the structural and chemical behavior of graphene oxide, respectively. Graphene oxide sheets show a clear concavity on one side when the aggregation of functional groups increased on the other side. This behavior could be the main reason for the surface fluctuation of graphene oxide sheets that is observed in microscopic images. In addition, the individual graphene oxide sheet presents greater values of mean roughness compared to multilayered sheets.

Sb nanoparticle decorated rGO as a new anode material in aqueous chloride ion batteries

Nanoscale ◽  
2020 ◽  
Vol 12 (23) ◽  
pp. 12268-12274 ◽  
Author(s):  
Qi Zhang ◽  
R. Karthick ◽  
Xiliang Zhao ◽  
Liguo Zhang ◽  
Yumeng Shi ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Uniform Distribution ◽  
Reduced Graphene Oxide ◽  
Anode Material ◽  
High Capacity ◽  
Chloride Ion ◽  
Reduced Graphene ◽  
One Step ◽  
Aqueous Chloride ◽  
Graphene Oxide Sheets

Antimony nanoparticle decorated reduced graphene oxide sheets with uniform distribution were synthesized as a new anode of aqueous chloride ion batteries in one step, which demonstrates a high capacity, and excellent reversibility and stability.

scholarly journals One-step synthesis of Ni3S2nanorod@Ni(OH)2nanosheet core–shell nanostructures on a three-dimensional graphene network for high-performance supercapacitors

2013 ◽  
Vol 6 (7) ◽  
pp. 2216-2221 ◽  
Author(s):  
Weijia Zhou ◽  
Xiehong Cao ◽  
Zhiyuan Zeng ◽  
Wenhui Shi ◽  
Yuanyuan Zhu ◽  
...  
Keyword(s):  
High Performance ◽  
Three Dimensional ◽  
Core Shell ◽  
Shell Nanostructures ◽  
One Step
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