Human hair-derived carbon flakes for electrochemical supercapacitors

被引：895

作者：

Qian, Wenjing ^{[1
]}

Sun, Fengxia ^{[2
]}

Xu, Yanhui ^{[2
]}

Qiu, Lihua ^{[1
]}

Liu, Changhai ^{[3
]}

Wang, Suidong ^{[3
]}

Yan, Feng ^{[1
]}

机构：

[1] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Dept Polymer Sci & Engn, Jiangsu Key Lab Adv Funct Polymer Design & Applic, Suzhou 215123, Peoples R China

[2] Soochow Univ, Inst Chem Power Sources, Suzhou 215006, Peoples R China

[3] Soochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Suzhou 215123, Peoples R China

来源：

ENERGY & ENVIRONMENTAL SCIENCE | 2014年 / 7卷 / 01期

关键词：

HIGH-PERFORMANCE SUPERCAPACITOR; CO-DOPED CARBONS; ELECTRODE MATERIALS; ENERGY-STORAGE; GRAPHENE; FILMS; CAPACITORS; NETWORK; FIBERS; PAPER;

D O I：

10.1039/c3ee43111h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Heteroatom doped porous carbon flakes were prepared via carbonization of Chinese human hair fibers and employed for high-performance supercapacitor electrode materials. The morphology and chemical composition of the resultant carbon materials were characterized by electron microscopy (EM), energydispersive X-ray spectroscopy (EDX), and X-ray photoelectron spectroscopy (XPS) measurements. Human hair carbonized at 800 degrees C exhibited high charge storage capacity with a specific capacitance of 340 F g(-1) in 6 M KOH at a current density of 1 A g(-1). and good stability over 20 000 cycles. The specific capacitance of 126 F g(-1) is also verified in a 1 M LiPF6 ethylene carbonate/diethyl carbonate (EC/DEC) organic electrolyte at a current density of 1 A g(-1). The high supercapacitor performance could be due to the micro/mesoporosity combined with high effective surface area and heteroatom doping effects, combining double layer and Faradaic contributions.

引用

页码：379 / 386

页数：8

共 52 条

[41] Supercapacitors Based on Flexible Graphene/Polyaniline Nanofiber Composite Films [J].