Structure and electrochemical performance of highly porous carbons by single-step potassium humate carbonization for application in supercapacitors

doi:10.1007/s10800-015-0894-0

IR > 石油化工学院

	Structure and electrochemical performance of highly porous carbons by single-step potassium humate carbonization for application in supercapacitors
	Luo, HeMing; Yang, YanFei; Chen, YanZheng; Zhang, JianQiang; Zhao, Xia
	2016-01
发表期刊	JOURNAL OF APPLIED ELECTROCHEMISTRY
ISSN	0021-891X
卷号	46 期号:1 页码:113-121
摘要	This paper presents the direct synthesis of highly porous carbons via the carbonization of potassium humate in inert atmosphere without any activation. Carbonization temperature is important for carbon structures and their electrochemical performance in electric double-layer capacitors. The CK800 material derived from potassium humate has a high-specific surface area of 890 m(2) g(-1) and an ideal average pore size of 2.56 nm. The CK800 material can also deliver a high-specific capacitance of 232 F g(-1) (26.1 A mu F cm(-2)) at a constant charge/discharge current of 0.5 A g(-1). This capacitance is maintained at a value of 114 F g(-1) (12.8 A mu F cm(-2)) at 30 A g(-1). This material also has good cycle stability with over 93.5 % capacitance retention after 5000 cycles when measured in a three-electrode system using 6 M KOH as electrolyte. In this study, the CK800 material is tested in a three-electrode system using 1 M NaHCO3 as electrolyte. Operational voltage in 1 M NaHCO3 aqueous solution could be extended up to 1.3 V.
关键词	Direct carbonization Supercapacitors High capacitance Mesoporous carbons Potassium humate
DOI	10.1007/s10800-015-0894-0
收录类别	SCI ; SCIE
语种	英语
资助项目	National Natural Science Foundation of China (NSFC)[21364004][51462020]
WOS研究方向	Electrochemistry
WOS类目	Electrochemistry
WOS记录号	WOS:000367612100012
出版者	SPRINGER
EI入藏号	20154301437952
EI主题词	Capacitance
EI分类号	549.1 Alkali Metals - 701.1 Electricity: Basic Concepts and Phenomena - 802.2 Chemical Reactions - 804 Chemical Products Generally - 804.2 Inorganic Compounds - 951 Materials Science
引用统计	被引频次：14[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/33826
专题	石油化工学院工会
通讯作者	Luo, HeMing
作者单位	Lanzhou Univ Technol, Coll Petrochem Technol, Lanzhou 730050, Peoples R China
第一作者单位	石油化工学院
通讯作者单位	石油化工学院
第一作者的第一单位	石油化工学院
推荐引用方式 GB/T 7714	Luo, HeMing,Yang, YanFei,Chen, YanZheng,et al. Structure and electrochemical performance of highly porous carbons by single-step potassium humate carbonization for application in supercapacitors[J]. JOURNAL OF APPLIED ELECTROCHEMISTRY,2016,46(1):113-121.
APA	Luo, HeMing,Yang, YanFei,Chen, YanZheng,Zhang, JianQiang,&Zhao, Xia.(2016).Structure and electrochemical performance of highly porous carbons by single-step potassium humate carbonization for application in supercapacitors.JOURNAL OF APPLIED ELECTROCHEMISTRY,46(1),113-121.
MLA	Luo, HeMing,et al."Structure and electrochemical performance of highly porous carbons by single-step potassium humate carbonization for application in supercapacitors".JOURNAL OF APPLIED ELECTROCHEMISTRY 46.1(2016):113-121.