Flower-like MnO2 on layered carbon derived from sisal hemp for asymmetric supercapacitor with enhanced energy density

doi:10.1016/j.jallcom.2020.154133

	Flower-like MnO2 on layered carbon derived from sisal hemp for asymmetric supercapacitor with enhanced energy density
	Tan, Yanli 1; Yang, Chunxiao 2; Qian, Weiwei 3; Teng, Chao 4
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2020-06-15
卷号	826 页码:9
关键词	MnO2 Layered carbon Enhanced energy Asymmetric supercapacitor
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2020.154133
英文摘要	MnO2 has been considered as a very promising positive electrode candidate for high energy density asymmetric supercapacitors (ASCs) because of high theoretical capacitance. However, the electro-chemical performance of pure MnO2 for ASCs has still been severely limited by poor electronic conductivity, volume expansion and dissolution problem. Herein, we report flower-like MnO2-carbon composite (MnO2/SHAC) as positive electrode and layered Sisal Hemp Active Carbon (SHAC) as negative electrode for high-energy ASCs. The flower-like MnO2/SHAC positive electrode comprised a number of interconnected thin nano-flakes with a length of about 50-100 nm and a thickness of about 10 nm and exhibited a large specific surface area of 189.6 m(2) g(-1) and good conductivity. The SHAC negative electrode showed multi-layered graphene-like structure and a high BET surface area of 1303.5 m(2) g(-1). Moreover, the assembled MnO2/SHAC//SHAC ASC exhibits a maximum energy density of 46.2 Wh kg(-1) at 0.1 A g(-1) and a maximum power density of 3679.5 W kg(-1) at 6 A g(-1), suggesting that MnO2/SHAC composite has promising potential for practical supercapacitors with enhanced energy. (C) 2020 Elsevier B.V. All rights reserved.
资助项目	Natural Science Foundation of Shandong[ZR2019PB016] ; Postdoctoral Applied Research Project of Qingdao ; National Natural Science Foundation of China[21808228]
WOS关键词	HIGH-PERFORMANCE ; HIGH-POWER ; NANOSHEETS ; GRAPHENE ; COMPOSITES ; ELECTRODES ; MICROSPHERES ; NANOTUBES ; BEHAVIOR ; BATTERY
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000519269300028
资助机构	Natural Science Foundation of Shandong ; Postdoctoral Applied Research Project of Qingdao ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/39766]
专题	中国科学院过程工程研究所
通讯作者	Tan, Yanli
作者单位	1.Qingdao Univ, Sch Chem & Chem Engn, Qingdao 266071, Peoples R China 2.CITIC Guaon Mengguli Power Sci & Technol CO LTD, Beijing 102200, Peoples R China 3.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 4.Qingdao Univ Sci & Technol, Coll Mat Sci & Engn, Qingdao 266042, Peoples R China
推荐引用方式 GB/T 7714	Tan, Yanli,Yang, Chunxiao,Qian, Weiwei,et al. Flower-like MnO2 on layered carbon derived from sisal hemp for asymmetric supercapacitor with enhanced energy density[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2020,826:9.
APA	Tan, Yanli,Yang, Chunxiao,Qian, Weiwei,&Teng, Chao.(2020).Flower-like MnO2 on layered carbon derived from sisal hemp for asymmetric supercapacitor with enhanced energy density.JOURNAL OF ALLOYS AND COMPOUNDS,826,9.
MLA	Tan, Yanli,et al."Flower-like MnO2 on layered carbon derived from sisal hemp for asymmetric supercapacitor with enhanced energy density".JOURNAL OF ALLOYS AND COMPOUNDS 826(2020):9.