Hierarchical Cobalt Hydroxide and B/N Co-Doped Graphene Nanohybrids   Derived from Metal-Organic Frameworks for High Energy Density Asymmetric   Supercapacitors

doi:10.1038/srep43084

CORC > 北京大学 > 工学院

	Hierarchical Cobalt Hydroxide and B/N Co-Doped Graphene Nanohybrids Derived from Metal-Organic Frameworks for High Energy Density Asymmetric Supercapacitors
	Tabassum, Hassina ; Mahmood, Asif ; Wang, Qingfei ; Xia, Wei ; Liang, Zibin ; Qiu, Bin ; Zhao, Ruo ; Zou, Ruqiang
刊名	SCIENTIFIC REPORTS
	2017
关键词	DOUBLE-LAYER CAPACITORS CATALYST-FREE SYNTHESIS POROUS CARBON OXYGEN REDUCTION PSEUDOCAPACITIVE PERFORMANCE NANOPOROUS CARBONS FACILE SYNTHESIS NANOWIRE ARRAYS THIN-FILM BORON
DOI	10.1038/srep43084
英文摘要	To cater for the demands of electrochemical energy storage system, the development of cost effective, durable and highly efficient electrode materials is desired. Here, a novel electrode material based on redox active beta-Co(OH)(2) and B, N co-doped graphene nanohybrid is presented for electrochemical supercapacitor by employing a facile metal-organic frameworks (MOFs) route through pyrolysis and hydrothermal treatment. The Co(OH)(2) could be firmly stabilized by dual protection of N-doped carbon polyhedron (CP) and B/N co-doped graphene (BCN) nanosheets. Interestingly, the porous carbon and BCN nanosheets greatly improve the charge storage, wettability, and redox activity of electrodes. Thus the hybrid delivers specific capacitance of 1263 F g(-1) at a current density of 1A g(-1) with 90% capacitance retention over 5000 cycles. Furthermore, the new aqueous asymmetric supercapacitor (ASC) was also designed by using Co(OH)(2)@CP@BCN nanohybrid and BCN nanosheets as positive and negative electrodes respectively, which leads to high energy density of 20.25 Whkg(-1). This device also exhibits excellent rate capability with energy density of 15.55 Whkg(-1) at power density of 9331 Wkg(-1) coupled long termed stability up to 6000 cycles.; National Natural Science Foundation of China [51322205, 21371014]; National Program for Support of Top-notch Young Professionals; Beijing Municipal Science & Technology Commission Program [Z151100000915074]; SCI(E); ARTICLE; 7
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/475034]
专题	工学院
推荐引用方式 GB/T 7714	Tabassum, Hassina,Mahmood, Asif,Wang, Qingfei,et al. Hierarchical Cobalt Hydroxide and B/N Co-Doped Graphene Nanohybrids Derived from Metal-Organic Frameworks for High Energy Density Asymmetric Supercapacitors[J]. SCIENTIFIC REPORTS,2017.
APA	Tabassum, Hassina.,Mahmood, Asif.,Wang, Qingfei.,Xia, Wei.,Liang, Zibin.,...&Zou, Ruqiang.(2017).Hierarchical Cobalt Hydroxide and B/N Co-Doped Graphene Nanohybrids Derived from Metal-Organic Frameworks for High Energy Density Asymmetric Supercapacitors.SCIENTIFIC REPORTS.
MLA	Tabassum, Hassina,et al."Hierarchical Cobalt Hydroxide and B/N Co-Doped Graphene Nanohybrids Derived from Metal-Organic Frameworks for High Energy Density Asymmetric Supercapacitors".SCIENTIFIC REPORTS (2017).