Ultrafine nickel-cobalt alloy nanoparticles incorporated into three-dimensional porous graphitic carbon as an electrode material for supercapacitors

doi:10.1039/c6ta06022f

CORC > 合肥物质科学研究院 > 中国科学院合肥物质科学研究院 > 中科院固体物理研究所

	Ultrafine nickel-cobalt alloy nanoparticles incorporated into three-dimensional porous graphitic carbon as an electrode material for supercapacitors
	Liu, Shengwen 1; Zhao, Qian 1,2; Tong, Mingyu 1,2; Zhu, Xiaoguang 1; Wang, Guozhong 1; Cai, Weiping 1; Zhang, Haimin 1; Zhao, Huijun 1,3
刊名	JOURNAL OF MATERIALS CHEMISTRY A
	2016
卷号	4 期号:43 页码:17080-17086
DOI	10.1039/c6ta06022f
文献子类	Article
英文摘要	Metal oxides are a class of promising electrode materials for supercapacitors because of their high theoretical energy density; however, the low electrical conductivity and instability of metal oxides limit their large-scale practical applications. Here we report a facile and scalable method to synthesize ultrafine nickel-cobalt alloy nanoparticles (5-10 nm) embedded into three-dimensional porous graphitic carbon (3D Ni-Co@PGC) using NaCl as the template to create a porous structure and glucose as the carbon source by pyrolysis treatment at 800 degrees C under N-2 atmosphere. As an electrode material for supercapacitors, the ultrafine Ni-Co alloy nanoparticles of 3D Ni-Co@PGC not only serve as current collectors, but also their surfaces convert to corresponding metal oxides when exposed to an alkaline electrolyte, responsible for redox reactions in pseudocapacitors, exhibiting high supercapacitor performance. The results demonstrate that the supercapacitor assembled with 3D Ni-Co@PGC electrodes shows high energy density (1091, 1064 and 1041 F g(-1) at 1, 2 and 4 A g(-1), respectively), long cycling life and excellent rate capability at a high charge/discharge current. Furthermore, an asymmetric supercapacitor assembled by using 3D Ni-Co@PGC as the positive electrode and active carbon as the negative electrode shows a high energy density of 33.7 W h kg(-1) and remarkable cycling stability (98% capacitance retention over 4000 cycles). The superior performance of the 3D Ni-Co@PGC constructed supercapacitor can be ascribed to its high surface area (265 m(2) g(-1)), porous structure and excellent electrical conductivity, favourable for the exposure of reaction active sites, redox-related mass transport and electron transfer, respectively.
WOS关键词	HIGH-PERFORMANCE SUPERCAPACITORS ; ASYMMETRIC SUPERCAPACITORS ; ULTRAHIGH CAPACITANCE ; ORGANIC FRAMEWORK ; NANOSHEETS ; ARRAYS ; GRAPHENE ; ELECTROCATALYSTS ; CORE ; FOAM
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science
语种	英语
WOS记录号	WOS:000387878700039
资助机构	CAS Pioneer Hundred Talents Program ; CAS Pioneer Hundred Talents Program ; CAS Pioneer Hundred Talents Program ; CAS Pioneer Hundred Talents Program ; Users with Potential Program (Hefei Science Center, CAS)(2015HSC-UP006) ; Users with Potential Program (Hefei Science Center, CAS)(2015HSC-UP006) ; Users with Potential Program (Hefei Science Center, CAS)(2015HSC-UP006) ; Users with Potential Program (Hefei Science Center, CAS)(2015HSC-UP006) ; National Natural Science Foundation of China(51372248 ; National Natural Science Foundation of China(51372248 ; National Natural Science Foundation of China(51372248 ; National Natural Science Foundation of China(51372248 ; CAS/SAFEA International Partnership Program for Creative Research Teams of Chinese Academy of Sciences, China ; CAS/SAFEA International Partnership Program for Creative Research Teams of Chinese Academy of Sciences, China ; CAS/SAFEA International Partnership Program for Creative Research Teams of Chinese Academy of Sciences, China ; CAS/SAFEA International Partnership Program for Creative Research Teams of Chinese Academy of Sciences, China ; 51432009) ; 51432009) ; 51432009) ; 51432009) ; CAS Pioneer Hundred Talents Program ; CAS Pioneer Hundred Talents Program ; CAS Pioneer Hundred Talents Program ; CAS Pioneer Hundred Talents Program ; Users with Potential Program (Hefei Science Center, CAS)(2015HSC-UP006) ; Users with Potential Program (Hefei Science Center, CAS)(2015HSC-UP006) ; Users with Potential Program (Hefei Science Center, CAS)(2015HSC-UP006) ; Users with Potential Program (Hefei Science Center, CAS)(2015HSC-UP006) ; National Natural Science Foundation of China(51372248 ; National Natural Science Foundation of China(51372248 ; National Natural Science Foundation of China(51372248 ; National Natural Science Foundation of China(51372248 ; CAS/SAFEA International Partnership Program for Creative Research Teams of Chinese Academy of Sciences, China ; CAS/SAFEA International Partnership Program for Creative Research Teams of Chinese Academy of Sciences, China ; CAS/SAFEA International Partnership Program for Creative Research Teams of Chinese Academy of Sciences, China ; CAS/SAFEA International Partnership Program for Creative Research Teams of Chinese Academy of Sciences, China ; 51432009) ; 51432009) ; 51432009) ; 51432009)
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/30193]
专题	合肥物质科学研究院_中科院固体物理研究所
作者单位	1.Chinese Acad Sci, Key Lab Mat Phys, Anhui Key Lab Nanomat & Nanotechnol, Ctr Environm & Energy Nanomat,Inst Solid State Ph, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Peoples R China 3.Griffith Univ, Ctr Clean Environm & Energy, Gold Coast Campus, Nathan, Qld 4222, Australia
推荐引用方式 GB/T 7714	Liu, Shengwen,Zhao, Qian,Tong, Mingyu,et al. Ultrafine nickel-cobalt alloy nanoparticles incorporated into three-dimensional porous graphitic carbon as an electrode material for supercapacitors[J]. JOURNAL OF MATERIALS CHEMISTRY A,2016,4(43):17080-17086.
APA	Liu, Shengwen.,Zhao, Qian.,Tong, Mingyu.,Zhu, Xiaoguang.,Wang, Guozhong.,...&Zhao, Huijun.(2016).Ultrafine nickel-cobalt alloy nanoparticles incorporated into three-dimensional porous graphitic carbon as an electrode material for supercapacitors.JOURNAL OF MATERIALS CHEMISTRY A,4(43),17080-17086.
MLA	Liu, Shengwen,et al."Ultrafine nickel-cobalt alloy nanoparticles incorporated into three-dimensional porous graphitic carbon as an electrode material for supercapacitors".JOURNAL OF MATERIALS CHEMISTRY A 4.43(2016):17080-17086.