S, N Dual-Doped Graphene Fibers: A High-Performance Electrode Material for Supercapacitors

被引：8

作者：

Kan, Yanfang ^{[1
]}

Ma, Xinlong ^{[1
]}

Ning, Guoqing ^{[1
]}

Li, Yongfeng ^{[1
]}

Zhou, Yasong ^{[1
]}

机构：

[1] China Univ Petr, State Key Lab Heavy Oil Proc, Beijing Fuxue Rd 18th, Beijing 102249, Peoples R China

来源：

CHEMELECTROCHEM | 2017年 / 4卷 / 10期

关键词：

sulfur; nitrogen; doping; raphene fibers; supercapacitors; LITHIUM-ION BATTERIES; ENERGY-STORAGE; CARBON NANOTUBES; POROUS GRAPHENE; SULFUR; PHOSPHORUS; CAPACITANCE; NETWORKS; FILMS;

D O I：

10.1002/celc.201700406

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Sulfur and nitrogen dual-doped graphene fibers (SNGFs) were prepared through an optimized chemical vapor deposition. The SNGFs exhibit a stable 3D fibrous structure, high surface area, abundant mesopores, uniform distribution of S and N atoms and more defects. As electrodes for supercapacitors, the specific capacitance of SNGFs reaches 311 Fg(-1). The SNGF//SNGF symmetric supercapacitor delivers maximum energy and power densities of 37.7 Whkg(-1) and 14 kWkg(-1), with excellent cycling stability (92.2% capacitance remained after 5000 cycles). The result indicates that the SNGFs are a promising candidate as a high-quality electrode material for supercapacitors.

引用

页码：2677 / 2682

页数：6

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