N/S co-doped coal-based porous carbon spheres as electrode materials for high performance supercapacitors

被引：24

作者：

Lv, Yan ^{[1
]}

Chen, Jingjing ^{[1
]}

Jia, Wei ^{[1
]}

Wu, Xueyan ^{[1
]}

Guo, Jixi ^{[1
]}

Ding, Lili ^{[1
]}

Jia, Dianzeng ^{[1
]}

Tong, Fenglian ^{[1
]}

机构：

[1] Xinjiang Univ Urumqi, Key Lab Energy Mat Chem, Key Lab Adv Funct Mat, Inst Appl Chem,Minist Educ, Urumqi, Autonomous Regi, Peoples R China

来源：

RSC ADVANCES | 2020年 / 10卷 / 19期

基金：

中国国家自然科学基金;

关键词：

ORDERED MESOPOROUS CARBON; NITROGEN; SULFUR; CAPACITANCE; GRAPHENE; PHOSPHORUS; NANOTUBES;

D O I：

10.1039/d0ra00458h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

N/S co-doped porous carbon spheres (NSPCSs) were prepared by a simple ultrasonic spray pyrolysis (USP) using the mixed solution of coal oxide and l-cysteine, and without a subsequent activation process. The surface properties of carbon materials have been successfully modified by the concurrent incorporation of N and S. So the capacitive performance of NSPCSs was greatly enhanced. It is used as a supercapacitor electrode to achieve a high specific capacitance of 308 F g(-1) at a current density of 1 A g(-1) and 90.2% capacitance retention even after 10 000 cycles at 5 A g(-1). These numerical results show that the supercapacitors based on coal-based carbon materials have great potential in high performance electrochemical energy storage.

引用

页码：11033 / 11038

页数：6

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