期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 542, 期 -, 页码 392-399出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2019.02.037
关键词
Carbon dots; Nickel hydroxide; Two-dimensional nanostructures; Synthesis; Supercapacitor
资金
- National Natural Science Foundation of China [51602129, 21875091]
- Natural Science Foundation of Jiangsu Province [BK20161343, BK20171295]
- Joint Open Fund of Jiangsu Collaborative Innovation Center for Ecological Building Material and Environmental Protection Equipments and Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province [JH201804]
- Youth Talent Cultivation Plan of Jiangsu University
Owing to their unique electronic properties and capability to host diverse functional groups on the surface, carbon dots (CDs) have attracted increasing attention in energy storage field. Herein, ultrathin nitrogen-doped carbon dots (NCDs) decorated nickel hydroxide (Ni(OH)(2)) nanosheets were fabricated by a facile hydrothermal approach, where NCDs play an important role as a structure-directing agent in tuning the size and thickness of the Ni(OH)(2). With the merits of the battery-type faradaic behavior of Ni(OH)(2) and high electronic properties of NCDs, the achieved Ni(OH)(2)/NCDs ultrathin nanosheets show a specific capacitance of about 1711.2 F g(-1) at a current density of 1 A g(-1), which is twice more than that of pristine Ni(OH)(2). A hybrid supercapacitor device was constructed using Ni(OH)(2)/NCDs ultrathin nanosheets as the positive electrode and three-dimensional graphene (3DGE) as the negative electrode, respectively, which presents high energy density of 23.8-34.6 Wh kg(-1) at power density of 700-7000 W kg(-1). The enhanced electrochemical properties of Ni(OH)(2)/NCDs nanocomposite hold potential for future high-performance energy storage applications. (C) 2019 Elsevier Inc. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据