Tuning the interlayer spacing of graphene laminate films for efficient pore utilization towards compact capacitive energy storage

doi:10.1038/s41560-020-0560-6

CORC > 金属研究所 > 中国科学院金属研究所

	Tuning the interlayer spacing of graphene laminate films for efficient pore utilization towards compact capacitive energy storage
	Li, Zhuangnan 2,3; Gadipelli, Srinivas 4,5; Li, Hucheng 3,6; Howard, Christopher A.7; Brett, Dan J. L.4; Shearing, Paul R.4; Guo, Zhengxiao 1,2,8,9; Parkin, Ivan P.2; Li, Feng 3,6
刊名	NATURE ENERGY
	2020-02-01
卷号	5 期号:2 页码:160-168
ISSN号	2058-7546
DOI	10.1038/s41560-020-0560-6
通讯作者	Guo, Zhengxiao(z.x.guo@ucl.ac.uk) ; Parkin, Ivan P.(i.p.parkin@ucl.ac.uk) ; Li, Feng(fli@imr.ac.cn)
英文摘要	The volumetric performance of supercapacitors needs to be improved, but the usual trade-off between porosity and density is a problem. Here the authors develop a graphene laminate film with tunable porosity that leads to a volumetric energy density of 88.1 Wh l(-1) at the device level. Supercapacitors have shown extraordinary promise for miniaturized electronics and electric vehicles, but are usually limited by electrodes with rather low volumetric performance, which is largely due to the inefficient utilization of pores in charge storage. Herein, we design a freestanding graphene laminate film electrode with highly efficient pore utilization for compact capacitive energy storage. The interlayer spacing of this film can be precisely adjusted, which enables a tunable porosity. By systematically tailoring the pore size for the electrolyte ions, pores are utilized optimally and thereby the volumetric capacitance is maximized. Consequently, the fabricated supercapacitor delivers a stack volumetric energy density of 88.1 Wh l(-1) in an ionic liquid electrolyte, representing a critical breakthrough for optimizing the porosity towards compact energy storage. Moreover, the optimized film electrode is assembled into an ionogel-based, all-solid-state, flexible smart device with multiple optional outputs and superior stability, demonstrating enormous potential as a portable power supply in practical applications.
资助项目	National Science Foundation of China[51525206] ; National Science Foundation of China[51521091] ; National Science Foundation of China[51372253] ; Ministry of Science and Technology of China[2016YFA0200100] ; Ministry of Science and Technology of China[2016YFB0100100] ; Strategic Priority Research Programme of Chinese Academy of Science[XDA22010602] ; Key Research Programme of the Chinese Academy of Sciences[KGZD-EW-T06] ; EPSRC[EP/R020973/1] ; EPSRC[EP/P009050/1] ; EPSRC[EP/L018330/1] ; EPSRC[EP/K002252/1] ; EPSRC[EP/M009394/1] ; Royal Academy of Engineering
WOS研究方向	Energy & Fuels ; Materials Science
语种	英语
出版者	NATURE PUBLISHING GROUP
WOS记录号	WOS:000514052800001
资助机构	National Science Foundation of China ; Ministry of Science and Technology of China ; Strategic Priority Research Programme of Chinese Academy of Science ; Key Research Programme of the Chinese Academy of Sciences ; EPSRC ; Royal Academy of Engineering
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/137324]
专题	金属研究所_中国科学院金属研究所
通讯作者	Guo, Zhengxiao; Parkin, Ivan P.; Li, Feng
作者单位	1.Univ Hong Kong, HKU Zhejiang Inst Res & Innovat, Hangzhou, Peoples R China 2.UCL, Dept Chem, London, England 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang, Peoples R China 4.UCL, Dept Chem Engn, London, England 5.Sichuan Univ, Coll Phys, Chengdu, Peoples R China 6.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang, Peoples R China 7.UCL, Dept Phys & Astron, London, England 8.Univ Hong Kong, Dept Chem, Hong Kong, Peoples R China 9.Univ Hong Kong, Dept Mech Engn, Hong Kong, Peoples R China
推荐引用方式 GB/T 7714	Li, Zhuangnan,Gadipelli, Srinivas,Li, Hucheng,et al. Tuning the interlayer spacing of graphene laminate films for efficient pore utilization towards compact capacitive energy storage[J]. NATURE ENERGY,2020,5(2):160-168.
APA	Li, Zhuangnan.,Gadipelli, Srinivas.,Li, Hucheng.,Howard, Christopher A..,Brett, Dan J. L..,...&Li, Feng.(2020).Tuning the interlayer spacing of graphene laminate films for efficient pore utilization towards compact capacitive energy storage.NATURE ENERGY,5(2),160-168.
MLA	Li, Zhuangnan,et al."Tuning the interlayer spacing of graphene laminate films for efficient pore utilization towards compact capacitive energy storage".NATURE ENERGY 5.2(2020):160-168.