Effects of oxygen-containing functional groups on the supercapacitor performance of incompletely reduced graphene oxides
Effects of oxygen-containing functional groups on the supercapacitor performance of incompletely reduced graphene oxides
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DOI：
10.1016/j.ijhydene.2016.08.054
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发表时间：
2017-03-09
影响因子：
7.2
通讯作者：
Zhang, Haiyan
中科院分区：
文献类型：
--
作者：
Chen, Yiming;Zhang, Zhiping;Zhang, Haiyan
在微波功率分别为800W和1200W的条件下，用石墨氧化物还原制备了不完全还原的石墨烯。傅里叶变换红外光谱和X-射线光电子能谱分析表明，RG中含有丰富的含氧官能团，如羧基、苯酚、羰基和苯醌。用X射线衍射仪、扫描电子显微镜和透射电子显微镜对RG样品的结构、形貌进行了研究。分别在5M NaOH、1M H_2SO_4和1M Na_2SO_4电解液中测试了RG电极的电化学性能。研究了含氧官能团行为对超级电容器性能的影响。通过恒电流充放电测量(C)2016氢能出版物有限责任公司获得了在1M硫酸中羧基或苯酚基团和在5M氢氧化钠中羰基和苯醌基团的单位原子百分比的比假电容。爱思唯尔有限公司出版。保留所有权利。
Incompletely reduced graphene (RG) was prepared by reduction of graphite oxides via microwave irradiation at the power of 800 W and 1200 W, respectively. Fourier transform infrared spectra and X-ray photoelectron spectroscopy analyses showed that the RG contains flourish oxygen functional groups such as carboxyl, phenol, carbonyl, and quinone groups. X-ray diffraction, scanning electron microscopy and transmission electron microscopy were employed to investigate the structure, morphology of the RG samples. The electrochemical performance of the RG electrodes were measured in 5 M NaOH, 1 M H2SO4 and 1 M Na2SO4 electrolytes respectively. The supercapacitor performance of oxygen containing functional group behavior was investigated. The specific pseudocapacitance per unit atomic percentage for either carboxyl or phenol group in 1 M H2SO4 and either carbonyl and quinone group in 5 M NaOH were obtained by galvano-statically charge/discharge measurements (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.