文献类型：期刊文献

英文题名：Layer-opened graphene paper with carbon nanotubes as support in a flexible electrode material for supercapacitors

作者：Ma, Zhihua[1,2];Yang, Jie[1];Zhang, Jingwei[2];Chen, Gairong[1];Miao, Changqing[1];Shi, Lu[1];Wang, Liujie[1];Zhang, Zhijun[2]

第一作者：Ma, Zhihua;马志华

通讯作者：Chen, GR[1];Zhang, JW[2]

机构：[1]Xinxiang Univ, Coll Chem & Chem Engn, Xinxiang 453003, Peoples R China;[2]Henan Univ, Natl & Local Joint Engn Res Ctr Appl Technol Hybr, Kaifeng 475004, Peoples R China

第一机构：新乡学院化学化工学院

通讯机构：[1]corresponding author), Xinxiang Univ, Coll Chem & Chem Engn, Xinxiang 453003, Peoples R China;[2]corresponding author), Henan Univ, Natl & Local Joint Engn Res Ctr Appl Technol Hybr, Kaifeng 475004, Peoples R China.|[110713]新乡学院化学化工学院;[11071]新乡学院;

年份：2019

卷号：775

起止页码：982-989

外文期刊名：JOURNAL OF ALLOYS AND COMPOUNDS

收录：;EI(收录号：20184305979972);Scopus(收录号：2-s2.0-85055105385);WOS:【SCI-EXPANDED(收录号:WOS:000450981100114)】；

基金：This work is financially supported by the National Natural Science Foundation of China (NSFC, Grant Nos. 21271063, 21671057, 51701173), the Program for Innovative Research Team in University of HenanProvince (16IRTSTHN015), and the Key Research Project of Chinese Universities (18A530004).

语种：英文

外文关键词：Graphene paper; Carbon nanotubes; Three-dimensional layered structure; Electrochemical performance

摘要：Graphene paper is a promising electrode material for use in flexible supercapacitors due to its good electronic conductivity and excellent mechanical characteristics. However, layers of graphene paper have a strong tendency to restack, resulting in a seriously reduced specific surface area and limited electrochemical performance. In this paper, restacked layers of graphene paper are reopened by a vacuumassisted method, and carbon nanotubes (CNTs) are directly deposited on the enlarged space between the opened graphene layers. Consequently, an ordered carbon composite structure with alternately arranged graphene sheets and CNTs is constructed and exhibits increased specific surface area and a 3D conductive network. The structure and morphology of the samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman spectroscopy and N-2 adsorption/desorption measurements. The electrochemical performance was tested by galvanostatic chargedischarge test (GDC), electrochemical impedance spectroscopy (EIS) and cyclic voltammograms (CV). The obtained graphene/CNT paper exhibits a remarkably improved capacity of 170.8 F g(-1) , which is nearly two times higher than that obtained for a regular graphene paper. (C) 2018 Elsevier B.V. All rights reserved.