Polyethylenimine mediated reduced graphene oxide based flexible paper for supercapacitor

被引：28
|
作者：
Boruah, Buddha Deka [1 ]
Misra, Abha [1 ]
机构：
[1] Indian Inst Sci, Dept Instrumentat & Appl Phys, Bangalore 560012, Karnataka, India
来源：
ENERGY STORAGE MATERIALS | 2016年 / 5卷
关键词：
Graphene; Polyethylenimine; Composite; Flexible paper; Supercapacitor;
D O I：
10.1016/j.ensm.2016.05.007
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：
Polyethylenimine (PEI) mediated reduced graphene oxide (rGO) based paper is presented as novel material for flexible supercapacitor. It is demonstrated that the pristine rGO sheets store energy by physical adsorption of charged species; whereas PEI mediated rGO enhances the electrochemical reactivity by increasing the number of adsorption edges for charge species that also induces the redox reaction during electrochemical performance. The presented symmetric supercapacitor rGO-PEI//rGO-PEI possesses high areal capacitance of 180 mF/cm(2) at the charge/discharge current density of 1 mA/cm(2). In addition, the supercapacitor demonstrates very good capacitive retention of 94.17% of its initial capacitance after 5000cycles.(C)2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：103 / 110
页数：8
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