An all-in-one material with excellent electrical double-layer capacitance and pseudocapacitance performances for supercapacitor

doi:10.1016/j.apsusc.2018.05.088

CORC > 兰州理工大学 > 兰州理工大学 > 石油化工学院

	An all-in-one material with excellent electrical double-layer capacitance and pseudocapacitance performances for supercapacitor
	Li, Shengcai 2,3; Zhang, Ningshuang 1,2,3; Zhou, Haihui 2,3; Li, Jiawen 2,3; Gao, Na 2,3; Huang, Zhongyuan 2,3; Jiang, Lanlan 2,3; Kuang, Yafei 2,3
刊名	APPLIED SURFACE SCIENCE
	2018-09-30
卷号	453 页码:63-72
关键词	One-step method Materials characterisation 3D porous N-doped graphene Supercapacitor High energy density
ISSN号	0169-4332
DOI	10.1016/j.apsusc.2018.05.088
英文摘要	3D porous nitrogen-doped graphene nanosheets (PNGs) are facilely prepared via a simple one-step segmented thermal annealing method, using graphene oxide (GO) as carbon source, urea as nitrogen source and pore generator. During the pyrolysis process at 300 degrees C, urea and oxygenous groups on GO sheets can release large amounts of gas such as NH3, HCNO and H2O, which act as pore generators to tear and strike GO nanosheets to form 3D porous nanostructured material. When the temperature is increased up to 800 degrees C, a large amount of nitrogen-containing gas can react with the functional groups on GO. Consequently, the pore forming and nitrogen doping processes of GO are successfully realized and 3D PNGs are prepared. The research results show that the PNGs with an optimal N-doping content of 6.9% display a high surface area of 490.2 m(2) g(-1) and excellent electrochemical capacitive performance. The outstanding electrical double-layer capacitance and the increasing pseudocapacitance are attributed to the large specific surface area and the high nitrogen content, respectively. In 1 M H2SO4 electrolyte, the PNGs exhibit a specific capacitance of 337.0 F g(-1) and a low capacitance loss of 2.4% after 5000 cycles. Moreover, a symmetric supercapacitor with a cell voltage of 1.3 V is assembled, which displays both high energy density and high power density of 19.9 W h kg(-1) and 650 W kg(-1), respectively. The all-in-one material with excellent electrical double-layer capacitance and pseudocapacitance is promising in supercapacitor.
资助项目	National Natural Science Foundation of China[51672075][21271069][J1210040][51238002] ; Science and Technology Program of Hunan Province[2015JC3049]
WOS研究方向	Chemistry ; Materials Science ; Physics
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000436940800008
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/32445]
专题	石油化工学院
通讯作者	Zhou, Haihui; Kuang, Yafei
作者单位	1.Lanzhou Univ Technol, Coll Petrochem Technol, Lanzhou, Gansu, Peoples R China 2.Hunan Univ, State Key Lab Chemobiosensing & Chemometr, Changsha, Hunan, Peoples R China 3.Hunan Univ, Coll Chem & Chem Engn, Changsha, Hunan, Peoples R China
推荐引用方式 GB/T 7714	Li, Shengcai,Zhang, Ningshuang,Zhou, Haihui,et al. An all-in-one material with excellent electrical double-layer capacitance and pseudocapacitance performances for supercapacitor[J]. APPLIED SURFACE SCIENCE,2018,453:63-72.
APA	Li, Shengcai.,Zhang, Ningshuang.,Zhou, Haihui.,Li, Jiawen.,Gao, Na.,...&Kuang, Yafei.(2018).An all-in-one material with excellent electrical double-layer capacitance and pseudocapacitance performances for supercapacitor.APPLIED SURFACE SCIENCE,453,63-72.
MLA	Li, Shengcai,et al."An all-in-one material with excellent electrical double-layer capacitance and pseudocapacitance performances for supercapacitor".APPLIED SURFACE SCIENCE 453(2018):63-72.