Ultra-thick graphene bulk supercapacitor electrodes for compact energy storage

doi:10.1039/c6ee00941g

IMR OpenIR

	Ultra-thick graphene bulk supercapacitor electrodes for compact energy storage
	Li, Huan 1,2; Tao, Ying 1,2; Zheng, Xiaoyu 1,2; Luo, Jiayan 1,2; Kang, Feiyu 3; Cheng, Hui-Ming 4; Yang, Quan-Hong 1,2,3
通讯作者	Luo, Jiayan(jluo@tju.edu.cn) ; Yang, Quan-Hong(qhyangcn@tju.edu.cn)
	2016
发表期刊	ENERGY & ENVIRONMENTAL SCIENCE
ISSN	1754-5692
卷号	9 期号:10 页码:3135-3142
摘要	Compact energy storage with high volumetric performance is highly important. However, the state-of-the-art electrodes and devices remain far from the requirements due to the lack of consideration from a device perspective, which not only demands a high specific gravimetric capacity, but also needs to take into account operation voltage, material density and electrode thickness. We develop a novel approach to fabricate a monolithic ultra-thick and dense carbon electrode for symmetric supercapacitors, starting with graphene assembly and taking all the above factors into consideration. We found that zinc chloride is an ideal sacrificial pore former, and taken together with capillary drying can tune the specific surface area of the monolithic graphene from 370 to over 1000 m(2) g(-1) while the monoliths maintain a high density from 1.6 to 0.6 g cm(-3). Having a good balance of porosity and density, the directly sliced graphene pellet electrode with a thickness up to 400 mm delivers a capacitance of 150 F cm(-3) in an ionic liquid electrolyte, corresponding to a volumetric energy density of similar to 65 W h L-1 for a symmetrical supercapacitor device, the highest value reported to date for supercapacitors. This study presents a design principle for electrode materials towards next-generation energy storage devices, not limited to supercapacitors, which are becoming smaller, lighter but more energetic.
资助者	National Science Fund for Distinguished Young Scholars, China ; National Key Basic Research Program of China ; Shenzhen Basic Research Project ; National Natural Science Foundation of China
DOI	10.1039/c6ee00941g
收录类别	SCI
语种	英语
资助项目	National Science Fund for Distinguished Young Scholars, China[51525204] ; National Key Basic Research Program of China[2014CB932400] ; Shenzhen Basic Research Project[ZDSYS20140509172959981] ; National Natural Science Foundation of China[U1401243] ; National Natural Science Foundation of China[51372167] ; National Natural Science Foundation of China[51502197]
WOS研究方向	Chemistry ; Energy & Fuels ; Engineering ; Environmental Sciences & Ecology
WOS类目	Chemistry, Multidisciplinary ; Energy & Fuels ; Engineering, Chemical ; Environmental Sciences
WOS记录号	WOS:000386336200017
出版者	ROYAL SOC CHEMISTRY
引用统计	被引频次：376[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/123020
专题	中国科学院金属研究所
通讯作者	Luo, Jiayan; Yang, Quan-Hong
作者单位	1.Tianjin Univ, Sch Chem Engn & Technol, Minist Educ, Key Lab Green Chem Technol, Tianjin 300072, Peoples R China 2.Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300072, Peoples R China 3.Tsinghua Univ, Grad Sch Shenzhen, Lab Functionalized Carbon Mat, Shenzhen Key Lab Graphene Based Mat & Engn, Shenzhen 518055, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 100016, Peoples R China
推荐引用方式 GB/T 7714	Li, Huan,Tao, Ying,Zheng, Xiaoyu,et al. Ultra-thick graphene bulk supercapacitor electrodes for compact energy storage[J]. ENERGY & ENVIRONMENTAL SCIENCE,2016,9(10):3135-3142.
APA	Li, Huan.,Tao, Ying.,Zheng, Xiaoyu.,Luo, Jiayan.,Kang, Feiyu.,...&Yang, Quan-Hong.(2016).Ultra-thick graphene bulk supercapacitor electrodes for compact energy storage.ENERGY & ENVIRONMENTAL SCIENCE,9(10),3135-3142.
MLA	Li, Huan,et al."Ultra-thick graphene bulk supercapacitor electrodes for compact energy storage".ENERGY & ENVIRONMENTAL SCIENCE 9.10(2016):3135-3142.