Synthesis of graphene via ultra-sonic exfoliation of graphite oxide and its electrochemical characterization

被引：35

作者：

Asgar, Hassnain ^{[1
]}

Deen, K. M. ^{[2
]}

Riaz, Usman ^{[1
]}

Rahman, Zia Ur ^{[3
]}

Shah, Umair Hussain ^{[1
]}

Haider, Waseem ^{[1
,3
]}

机构：

[1] Cent Michigan Univ, Sch Engn & Technol, Mt Pleasant, MI 48859 USA

[2] Univ British Columbia, Dept Mat Engn, Vancouver, BC V6T 1Z4, Canada

[3] Cent Michigan Univ, Sci Adv Mat, Mt Pleasant, MI 48859 USA

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2018年 / 206卷

关键词：

SUPERCAPACITOR; ELECTRODES; CONVERSION; PLATFORM;

D O I：

10.1016/j.matchemphys.2017.11.062

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A direct method of producing graphene from graphite oxide (GO) via ultra-sonication is presented in this work. The synthesis of graphene was validated through IR, XRD, Raman, and XPS analyses. Moreover, the diffraction pattern obtained from TEM also validated the formation of graphene with characteristics (002) plane. The electrochemical behavior of GO and graphene was evaluated by electrochemical impedance spectroscopy and linear sweep voltammetry in 0.5M KOH solution. The relatively larger effective pseudocapacitance and broad current peak exhibited by GO in the LSV plots was related with the dominant adsorption of 'H-ads' during reduction of water. It has been considered that large over potential and relatively higher current response exhibited by GO compared to graphene was associated with the preferential adsorption of H-ads in the presence of surface functional groups. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：7 / 11

页数：5

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