High performance alumina based graphene nanocomposites with novel electrical and dielectric properties

RSC Advances ◽  
2015 ◽  
Vol 5 (42) ◽  
pp. 33607-33614 ◽  
Author(s):  
Kaleem Ahmad ◽  
Wei Pan ◽  
Hui Wu
Keyword(s):  
Dielectric Properties ◽  
High Performance ◽  
Graphene Nanosheets ◽  
Graphene Nanocomposites ◽  
Reduced Graphene ◽  
Electrical And Dielectric Properties

Thermally reduced graphene nanosheets in alumina demonstrate novel electrical and dielectric properties of the composites.

Nanocomposites of AgInZnS and graphene nanosheets as efficient photocatalysts for hydrogen evolution

Nanoscale ◽  
2015 ◽  
Vol 7 (44) ◽  
pp. 18498-18503 ◽  
Author(s):  
Xiaosheng Tang ◽  
Weiwei Chen ◽  
Zhiqiang Zu ◽  
Zhigang Zang ◽  
Ming Deng ◽  
...  
Keyword(s):  
Visible Light ◽  
Hydrogen Evolution ◽  
Visible Light Irradiation ◽  
Graphene Nanosheets ◽  
Light Irradiation ◽  
Hydrothermal Route ◽  
Graphene Nanocomposites ◽  
Photocatalytic Hydrogen Evolution ◽  
Highly Efficient ◽  
Reduced Graphene

AgInZnS–reduced graphene nanocomposites with highly efficient photocatalytic hydrogen evolution activity under visible-light irradiation were synthesized by a simple hydrothermal route.

Electrical and dielectric properties of poly(vinyl alcohol)/starch/graphene nanocomposites

2017 ◽  
Vol 96 (4) ◽  
pp. 903-911 ◽  
Author(s):  
Osamah A. Bin-Dahman ◽  
Mostafizur Rahaman ◽  
Dipak Khastgir ◽  
Mamdouh A. Al-Harthi
Keyword(s):  
Dielectric Properties ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Graphene Nanocomposites ◽  
Electrical And Dielectric Properties

MnO2/Graphene Nanocomposite for Use in High Performance Lithium-Ion Batteries

2013 ◽  
Vol 709 ◽  
pp. 157-160 ◽  
Author(s):  
Xiao Yi Zhu ◽  
Jian Jiang Li ◽  
Xi Lin She ◽  
Lin Hua Xia
Keyword(s):  
Lithium Ion Batteries ◽  
High Performance ◽  
Graphene Nanosheets ◽  
Synergetic Effect ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Lithium Storage ◽  
Hydrothermal Route ◽  
Graphene Nanocomposites ◽  
Mno2 Nanoparticles

A facile hydrothermal route has been developed to prepare MnO2/graphene nanocomposites and MnO2 nanoparticles are uniformly anchored on graphene nanosheets. The composite were studied as the anode material for lithium-ion batteries. The surface of graphene is modified by MnO2 nanoparticles which are 10-30 nm in size and homogeneously anchor on graphene sheets. The composite exhibits superior lithium battery performance with higher reversible capacity and better cycling performance. The reversible capacity is up to 781.5 mAh g-1 at a current of 100 mA g-1 and maintains 96% after 50 cycles. The enhanced lithium storage performance is due to the synergetic effect of graphene and MnO2.

Fabrication of Graphene/Zirconia Nanocomposite by Mixing Graphite Oxide and Zirconia Nanopowders and Pressureless Sintering

2012 ◽  
Vol 512-515 ◽  
pp. 65-68 ◽  
Author(s):  
Zheng E Yin ◽  
He Zhang ◽  
Yan Ru Kang ◽  
Jian Min Feng ◽  
Ya Li Li
Keyword(s):  
High Performance ◽  
Graphene Nanosheets ◽  
Pressureless Sintering ◽  
Sintering Process ◽  
Mechanical Mixing ◽  
Graphene Nanocomposites ◽  
Surface Areas ◽  
The Matrix ◽  
Zirconia Nanopowders ◽  
Superior Mechanical Properties

Graphene has unique two-dimensional nanostructure with high specific surface areas, superior mechanical properties which has promising applications for the development of high performance nanocomposite materials. Most of previous work on graphene nanocomposites addresses on polymer matrix. In the present work, we have fabricated zirconia and graphene nanocomposites (ZrO2/GNS) by simple mechanical mixing and pressureless sintering process. Microstructural observations of the composite show the homogeneous and random distributions of graphene nanosheet in the zirconia matrix. Scanning electronic microscopy observes partially pulled out graphene nanosheets with well combined interface with the matrix in fractural surface, showing promising reinforcement effects.

Electrical and Dielectric Properties of Exfoliated Thermally Reduced Graphene Based Polyurethane Nanocomposites

2017 ◽  
Vol 17 (12) ◽  
pp. 8782-8790 ◽  
Author(s):  
Taruna Bansala ◽  
Mangala Joshi ◽  
Samrat Mukhopadhyay ◽  
Ruey-An Doong ◽  
Manchal Chaudhary
Keyword(s):  
Dielectric Properties ◽  
Reduced Graphene ◽  
Electrical And Dielectric Properties ◽  
Polyurethane Nanocomposites

scholarly journals Supercritical CO2 Assisted Solvothermal Preparation of CoO/Graphene Nanocomposites for High Performance Lithium-Ion Batteries

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 694
Author(s):  
Ruoxin Yuan ◽  
Hao Wen ◽  
Li Zeng ◽  
Xi Li ◽  
Xingang Liu ◽  
...  
Keyword(s):  
Metal Oxides ◽  
Lithium Ion Batteries ◽  
Supercritical Co2 ◽  
High Performance ◽  
Solvothermal Method ◽  
Graphene Nanosheets ◽  
Specific Capacity ◽  
Rate Capability ◽  
Lithium Ion ◽  
Graphene Nanocomposites

Supercritical CO2 (scCO2) is often used to prepare graphene/metal oxide nanocomposite anodes for high performance lithium-ion batteries (LIBs) by the assisted solvothermal method due to its low viscosity, high diffusion, zero surface tension and good surface wettability. However, the formation mechanism of metal oxides and the combination mechanism between metal oxides and graphene in this system are superficial. In this work, a cobalt monoxide/graphene (CoO/G) nanocomposite is fabricated via the scCO2 assisted solvothermal method followed by thermal treatment. We elucidate the mechanism that amorphous intermediates obtain by the scCO2 assisted solvothermal method, and then ultrafine CoO nanoparticles are crystallized during the heat treatment. In addition, scCO2 can promote CoO to be tightly fixed on the surface of graphene nanosheets by interfacial chemical bonds, which can effectively improve its cycle stability and rate performance. As expected, the CoO/G composites exhibit higher specific capacity (961 mAh g−1 at 100 mA g−1), excellent cyclic stability and rate capability (617 mAh g−1 after 500 cycles at 1000 mA g−1) when applied as an anode of LIB.

Poly(propylene)-grafted thermally reduced graphene oxide and its compatibilization effect on poly(propylene)–graphene nanocomposites

RSC Advances ◽  
2016 ◽  
Vol 6 (91) ◽  
pp. 87828-87835 ◽  
Author(s):  
Song Ho Kim ◽  
Kyunghoon Kim ◽  
O Ok Park
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
High Performance ◽  
Graphene Nanoplatelets ◽  
Graphene Nanocomposites ◽  
Reduced Graphene ◽  
Compatibilization Effect ◽  
Poly Propylene

We synthesized PP-graft-thermally reduced graphene oxide (PP-g-TRGO2, PP-g-TRGO4 and PP-g-TRGO6) as a compatibilizer, to obtain high performance PP/graphene nanoplatelets nanocomposites.

scholarly journals Grafting polycarbonate onto graphene nanosheets: synthesis and characterization of high performance polycarbonate–graphene nanocomposites for ESD/EMI applications

RSC Advances ◽  
2017 ◽  
Vol 7 (73) ◽  
pp. 45902-45910 ◽  
Author(s):  
Sang-Hwa Yoon ◽  
Hee-Tae Jung
Keyword(s):  
Electrical Properties ◽  
High Performance ◽  
Graphene Nanosheets ◽  
Synthesis And Characterization ◽  
Graphene Nanocomposites ◽  
Mechanical And Electrical Properties

High performance polycarbonate–graphene nanocomposites were synthesized by grafting polycarbonate onto graphene nanosheets with outstanding mechanical and electrical properties.

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