High performance solid polymer electrolyte with graphene oxide nanosheets

RSC Advances ◽  
2014 ◽  
Vol 4 (103) ◽  
pp. 59637-59642 ◽  
Author(s):  
Mengying Yuan ◽  
Jeremy Erdman ◽  
Changyu Tang ◽  
Haleh Ardebili
Keyword(s):  
Graphene Oxide ◽  
Polyethylene Oxide ◽  
High Performance ◽  
Solid Polymer Electrolyte ◽  
Lithium Salt ◽  
High Surface ◽  
High Surface Area ◽  
Solid Polymer ◽  
Two Dimensional ◽  
Graphene Oxide Nanosheets

Two dimensional graphene oxide (GO) sheets with high surface area and excellent mechanical properties are introduced into a solid polyethylene oxide/lithium salt electrolyte.

Flexible thin-film battery based on graphene-oxide embedded in solid polymer electrolyte

Nanoscale ◽  
2015 ◽  
Vol 7 (41) ◽  
pp. 17516-17522 ◽  
Author(s):  
M. Kammoun ◽  
S. Berg ◽  
H. Ardebili
Keyword(s):  
Thin Film ◽  
Graphene Oxide ◽  
Lithium Ion Battery ◽  
Polymer Electrolyte ◽  
Polyethylene Oxide ◽  
Solid Polymer Electrolyte ◽  
High Capacity ◽  
Lithium Ion ◽  
Solid Polymer ◽  
Thin Film Battery

A novel flexible thin-film lithium ion battery containing polyethylene oxide (PEO) with 1% graphene oxide (GO) nanosheets is fabricated that offers enhanced safety, flexibility, stability and high capacity.

scholarly journals Comparative Electrocatalytic Oxygen Evolution Reaction Studies of Spinel NiFe2O4 and Its Nanocarbon Hybrids

2021 ◽  
Author(s):  
Pratik V. Shinde ◽  
Rutuparna Samal ◽  
Chandra Sekhar Rout
Keyword(s):  
Graphene Oxide ◽  
Oxygen Evolution ◽  
Current Density ◽  
Transition Metal Oxides ◽  
Oxygen Evolution Reaction ◽  
Active Sites ◽  
High Performance ◽  
High Surface ◽  
High Surface Area ◽  
A Current

AbstractElectrocatalytic oxygen evolution reaction (OER) is one of the crucial reactions for converting renewable electricity into chemical fuel in the form of hydrogen. To date, there is still a challenge in designing ideal cost-effective OER catalysts with excellent activity and robust durability. The hybridization of transition metal oxides and carbonaceous materials is one of the most effective and promising strategies to develop high-performance electrocatalysts. Herein, this work synthesized hybrids of NiFe2O4 spinel materials with two-dimensional (2D) graphene oxide and one-dimensional (1D) carbon nanotubes using a facile solvothermal approach. Electrocatalytic activities of NiFe2O4 with 2D graphene oxide toward OER were realized to be superior even to the 1D carbon nanotube-based electrocatalyst in terms of overpotential to reach a current density of 10 mA/cm2 as well as Tafel slopes. The NiFe2O4 with 2D graphene oxide hybrid exhibits good stability with an overpotential of 327 mV at a current density of 10 mA/cm2 and a Tafel slope of 103 mV/dec. The high performance of NiFe2O4 with 2D graphene oxide is mainly attributed to its unique morphology, more exposed active sites, and a porous structure with a high surface area. Thus, an approach of hybridizing a metal oxide with a carbonaceous material offers an attractive platform for developing an efficient electrocatalyst for water electrochemistry applications.

Functionalized Nano-graphene Oxide as Multi-modal Clinic for Effective Drug Delivery

2017 ◽  
Vol 10 (4) ◽  
pp. 3768-3771
Author(s):  
Soumitra Satapathi ◽  
Rutusmita Mishra ◽  
Manisha Chatterjee ◽  
Partha Roy ◽  
Somesh Mohapatra
Keyword(s):  
Drug Delivery ◽  
Graphene Oxide ◽  
Cancer Cell ◽  
High Surface ◽  
High Surface Area ◽  
Cancer Cell Line ◽  
Xrd Analysis ◽  
Graphene Derivatives ◽  
Nano Graphene

Nano-materials based drug delivery modalities to specific organs and tissues has become one of the critical endeavors in pharmaceutical research. Recently, two-dimensional graphene has elicited considerable research interest because of its potential application in drug delivery systems. Here we report, the drug delivery applications of PEGylated nano-graphene oxide (nGO-PEG), complexed with a multiphoton active and anti-cancerous diarylheptanoid drug curcumin. Specifically, graphene-derivatives were used as nanovectors for the delivery of the hydrophobic anticancer drug curcumin due to its high surface area and easy surface functionalization. nGO was synthesized by modified Hummer’s method and confirmed by XRD analysis. The formation of nGO, nGO-PEG and nGO-PEG-Curcumin complex were monitored through UV-vis, IR spectroscopy. MTT assay and AO/EB staining found that nGO-PEG-Curcumin complex afforded highly potent cancer cell killing in vitro with a human breast cancer cell line MCF7.

Hybrid two-dimensional nickel oxide-reduced graphene oxide nanosheets for supercapacitor electrodes

2021 ◽  
Vol 164 ◽  
pp. 105979
Author(s):  
Xin Gao ◽  
Hengwei Zhang ◽  
Erjun Guo ◽  
Fei Yao ◽  
Zengze Wang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Nickel Oxide ◽  
Reduced Graphene Oxide ◽  
Two Dimensional ◽  
Graphene Oxide Nanosheets ◽  
Reduced Graphene

scholarly journals Synthesis of catalysts with fine platinum particles supported by high-surface-area activated carbons and optimization of their catalytic activities for polymer electrolyte fuel cells

RSC Advances ◽  
2021 ◽  
Vol 11 (33) ◽  
pp. 20601-20611
Author(s):  
Md. Mijanur Rahman ◽  
Kenta Inaba ◽  
Garavdorj Batnyagt ◽  
Masato Saikawa ◽  
Yoshiki Kato ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Polymer Electrolyte ◽  
High Performance ◽  
Activated Carbons ◽  
Low Cost ◽  
High Surface ◽  
High Surface Area ◽  
Polymer Electrolyte Fuel Cells ◽  
Supported Platinum ◽  
Platinum Particles

Herein, we demonstrated that carbon-supported platinum (Pt/C) is a low-cost and high-performance electrocatalyst for polymer electrolyte fuel cells (PEFCs).

Versatile Graphene Oxide Nanosheets via Covalent Functionalization and Their Applications

2021 ◽  
Author(s):  
Minju Park ◽  
Namhee Kim ◽  
Jiyoung Lee ◽  
Minsu Gu ◽  
Byeong-Su Kim
Keyword(s):  
Graphene Oxide ◽  
Two Dimensional ◽  
Graphene Oxide Nanosheets ◽  
Covalent Functionalization ◽  
Graphene Derivatives

Even though many graphene derivatives that are atomically thin two-dimensional structures, such as graphene oxide (GO), have triggered enormous interest in the scientific and industrial communities owing to their easy...

scholarly journals Attached β-cyclodextrin/γ-(2,3-epoxypropoxy) propyl trimethoxysilane to graphene oxide and its application in copper removal

2017 ◽  
Vol 75 (10) ◽  
pp. 2403-2411 ◽  
Author(s):  
Zongxue Yu ◽  
Qi Chen ◽  
Liang Lv ◽  
Yang Pan ◽  
Guangyong Zeng ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
High Surface ◽  
High Surface Area ◽  
Esterification Reaction ◽  
X Ray Diffraction ◽  
X Ray ◽  
Cavity Structure ◽  
Optimum Ph ◽  
Exchange Adsorption ◽  
Langmuir Isotherm Model

The environmental applications of graphene oxide and β-cyclodextrin (β-CD) have attracted great attention since their first discovery. Novel nanocomposites were successfully prepared by using an esterification reaction between β-cyclodextrin/γ-(2,3-epoxypropoxy) propyl trimethoxysilane grafted graphene oxide (β-CD/GPTMS/GO). The β-CD/GPTMS/GO nanocomposites were used to remove the Cu2+ from aqueous solutions. The characteristics of β-CD/GPTMS/GO were detected by scanning electron microscopy (SEM), Fourier transform infrared, X-ray diffraction (XRD), thermogravimetric analysis (TG) and energy dispersive X-ray (EDX). The dispersibility of graphene oxide was excellent due to the addition of β-CD. The adsorption isotherms data obtained at the optimum pH 7 were fitted by Langmuir isotherm model. The excellent adsorption properties of β-CD/GPTMS/GO for Cu2+ ions could be attributed to the apolar cavity structure of β-CD, the high surface area and abundant functional groups on the surface of GO. The adsorption patterns of β-CD/GPTMS/GO were electrostatic attraction, formation of host-guest inclusion complexes and the ion exchange adsorption. The efficient adsorption of β-CD/GPTMS/GO for Cu2+ ions suggested that these novel nanocomposites may be ideal candidates for removing other cation pollutants from waste water.

Highly stable metal-organic framework UiO-66-NH2 for high-performance triboelectric nanogenerators

2021 ◽  
Author(s):  
Yong-Mei Wang ◽  
Xinxin Zhang ◽  
Dingyi Yang ◽  
Liting Wu ◽  
Jiaojiao Zhang ◽  
...  
Keyword(s):  
High Performance ◽  
Metal Organic Framework ◽  
High Surface ◽  
High Surface Area ◽  
Triboelectric Nanogenerator ◽  
High Porosity ◽  
Chemically Modified ◽  
Metal Organic ◽  
Triboelectric Nanogenerators ◽  
Organic Framework

Abstract The high porosity, controllable size, high surface area, and chemical versatility of a metal-organic framework (MOF) enable it a good material for a triboelectric nanogenerator (TENG), and some MOFs have been incorporated in the fabrication of TENGs. However, the understanding of effects of MOFs on the energy conversion of a TENG is still lacking, which inhibits the improvement of the performance of MOF-based TENGs. Here, UiO-66-NH2 MOFs were found to significantly increase the power of a TENG and the mechanism was carefully examined. The electron-withdrawing ability of Zr-based UiO-66-family MOFs was enhanced by designing the amino functionalized 1,4-terephthalic acid (1,4-BDC) as ligand. The chemically modified UiO-66-NH2 was found to increase the surface roughness and surface potential of a composite film with MOFs embedded in polydimethylsiloxane (PDMS) matrix. Thus the total charges due to the contact electrification increased significantly. The composite-based TENG was found to be very durable and its output voltage and current were 4 times and 60 times higher than that of a PDMS-based TENG. This work revealed an effective strategy to design MOFs with excellent electron-withdrawing abilities for high-performance TENGs.

scholarly journals Development of the PEO Based Solid Polymer Electrolytes for All-Solid State Lithium Ion Batteries

Polymers ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 1237 ◽  
Author(s):  
Yu Jiang ◽  
Xuemin Yan ◽  
Zhaofei Ma ◽  
Ping Mei ◽  
Wei Xiao ◽  
...  
Keyword(s):  
Solid State ◽  
Lithium Ion Batteries ◽  
Polymer Electrolytes ◽  
High Performance ◽  
Lithium Salt ◽  
Rapid Development ◽  
Lithium Ion ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Potential Candidate

Solid polymer electrolytes (SPEs) have attracted considerable attention due to the rapid development of the need for more safety and powerful lithium ion batteries. The prime requirements of solid polymer electrolytes are high ion conductivity, low glass transition temperature, excellent solubility to the conductive lithium salt, and good interface stability against Li anode, which makes PEO and its derivatives potential candidate polymer matrixes. This review mainly encompasses on the synthetic development of PEO-based SPEs (PSPEs), and the potential application of the resulting PSPEs for high performance, all-solid-state lithium ion batteries.

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