Low-temperature fabrication of 3D drilled graphene sheets hydrogel for supercapacitors with ultralong cycle life

被引：2
|
作者：
Qiu, Zenghui [1 ]
He, Dawei [1 ]
Wang, Yongsheng [1 ]
Li, Jiayuan [1 ]
机构：
[1] Beijing Jiaotong Univ, Inst Optoelect Technol, Minist Educ, Key Lab Luminescence & Opt Informat, 3 Shang Yuan Cun, Beijing 100044, Peoples R China
来源：
CHEMICAL PHYSICS LETTERS | 2017年 / 684卷
关键词：
Graphene; Porous hydrogel structure; Catalyzed gasification strategy; Supercapacitors; MULTIWALLED CARBON NANOTUBES; NITROGEN-DOPED GRAPHENE; ELECTROCHEMICAL CAPACITORS; ELECTRODE MATERIALS; ACTIVATED CARBON; NANOSHEETS; OXIDE; GRAPHITE; FILMS; NANOCOMPOSITES;
D O I：
10.1016/j.cplett.2017.07.014
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A simple cobalt catalyzed gasification strategy to synthesize drilled graphene sheets (DGNs) is performed, and 3D DGNs hydrogel is prepared at a relatively low temperature. Due to mesopore hydrogel structure that increases the charge transfer efficiency by providing pathways for ionic into the overlaps of DGNs hydrogel and hole density displays controllably, the resulting DGNs hydrogel electrode provides excellent rate capability with an ultrahigh specific capacitance of 264.1 F g(-1) at 1 A g(-1), compared to a value of 187.8 F g(-1) for graphene sheets (GNs) pole. DGNs hydrogel expands the design space for developing high-performance energy storage devices. 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：290 / 297
页数：8
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