High energy density supercapacitor based on N/B co-doped graphene nanoarchitectures and ionic liquid electrolyte

doi:10.1007/s11581-019-02987-6

	High energy density supercapacitor based on N/B co-doped graphene nanoarchitectures and ionic liquid electrolyte
	Yu, Zhongliang 1,2; Zhang, Jiahe 2; Xing, Chunxian 2; Hu, Lei 2,3; Wang, Lili 2,3; Ding, Ming 3; Zhang, Haitao 2
刊名	IONICS
	2019-09-01
卷号	25 期号:9 页码:4351-4360
关键词	Doping effect Graphene Supercapacitor Ionic liquid
ISSN号	0947-7047
DOI	10.1007/s11581-019-02987-6
英文摘要	Boron-nitrogen co-doped graphene nanoarchitectures were synthesized by annealing a freeze-dried precursor containing exfoliated graphene oxide (GO) nanosheets, ammonium borate, and polyvinyl alcohol (PVA). The microstructures and composition of nanocomposites were optimized and characterized systemically. Effects of a doping element on the electrochemical performances and interface compatibility were evaluated. The restacking of exfoliated graphene nanosheets was hindered effectively by the ultra-fine carbon clusters formed via the thermal decomposition of PVA. Such a three-dimensional structure favors the fast mobility of electrolyte ions. In addition, the co-doping of N and B elements not only increases interface compatibility between ionic liquid electrolyte and graphene but also supplies extra pseudocapacitance. Benefiting from the integrated merits, the optimized nanocomposites could deliver a specific capacitance of 35.4 F g(-1) at 1 A g(-1) and present a maximum energy density of 78.7 Wh kg(-1) with a power density of 2043 W kg(-1). Due to the formation of more decoupled ions in ionic liquid electrolyte at elevated temperature, the symmetric supercapacitors based on the as-formed nanocomposite exhibit a maximum energy density of 134.6 Wh kg(-1) at 60 degrees C.
资助项目	National Key Research and Development Program of China[2016YFB0100303] ; Key Research Program of Frontier Sciences[QYZDY-SSW-JSC011] ; National Natural Science Foundation of China[21878308]
WOS关键词	ASYMMETRIC SUPERCAPACITORS ; 3-DIMENSIONAL NITROGEN ; MESOPOROUS CARBON ; POROUS CARBON ; BORON ; OXIDE ; CAPACITANCE ; NANOSHEETS ; REDUCTION ; CATHODE
WOS研究方向	Chemistry ; Electrochemistry ; Physics
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000481943500033
资助机构	National Key Research and Development Program of China ; Key Research Program of Frontier Sciences ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/30614]
专题	中国科学院过程工程研究所
通讯作者	Zhang, Haitao
作者单位	1.Hefei Univ, Dept Biol & Environm Engn, Hefei 230601, Anhui, Peoples R China 2.Chinese Acad Sci, Key Lab Green Proc & Engn, Beijing Key Lab Ion Liquids Clean Proc, Inst Proc Engn, Beijing 100190, Peoples R China 3.Hefei Univ, Dept Chem & Mat Engn, Hefei 230601, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Yu, Zhongliang,Zhang, Jiahe,Xing, Chunxian,et al. High energy density supercapacitor based on N/B co-doped graphene nanoarchitectures and ionic liquid electrolyte[J]. IONICS,2019,25(9):4351-4360.
APA	Yu, Zhongliang.,Zhang, Jiahe.,Xing, Chunxian.,Hu, Lei.,Wang, Lili.,...&Zhang, Haitao.(2019).High energy density supercapacitor based on N/B co-doped graphene nanoarchitectures and ionic liquid electrolyte.IONICS,25(9),4351-4360.
MLA	Yu, Zhongliang,et al."High energy density supercapacitor based on N/B co-doped graphene nanoarchitectures and ionic liquid electrolyte".IONICS 25.9(2019):4351-4360.