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Stress-assisted design of stiffened graphene electrode structure toward compact energy storage
Wang, Yuzuo1,2,3,4; Chen, Jing2; Qin, Huasong5; Chen, Ke2; Li, Zhuangnan6; Chen, Yan5; Li, Juan2,7; Hu, Tianzhao2,8; Chen, Shaorui2; Qiao, Zhijun4; Ruan, Dianbo1,4; Yang, Quanhong3; Liu, Yilun5; Li, Feng2
Corresponding AuthorRuan, Dianbo(ruandianbo@nbu.edu.cn) ; Liu, Yilun(yilunliu@mail.xjtu.edu.cn) ; Li, Feng(fli@imr.ac.cn)
2022-08-01
Source PublicationJOURNAL OF ENERGY CHEMISTRY
ISSN2095-4956
Volume71Pages:478-487
AbstractThe low spatial charge-storage density of porous carbons greatly limits volumetric performance in electrochemical capacitors. An increase of charge-storage density requires structural refinements to balance the trade-offs between the porosity and density of materials, but the limited mechanical properties of carbons usually fail to withstand effective densifying processes and obtain an ideal pore structure. Herein, we design the stiffened graphene of superior bending rigidity, enabling the fine adjustments of pore structure to maximize the volumetric capacitance for the graphene-based electrodes. The in plane crumples on graphene sheets are found to contribute largely to the bending rigidity, which is useful to control the structural evolution and maintain sufficient ion-accessible surface area during the assembling process. This makes the capacitance of stiffening activated graphene keep 98% when the electrode density increases by 769% to reach 1.13 g.cm(-3) after mechanical pressure, an excellent volumetric energy density of 98.7 Wh.L-1 in an ionic-liquid electrolyte is achieved. Our results demonstrate the role of intrinsic material properties on the performance of carbon-based electrodes for capacitive energy storage. (c) 2022 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by ELSEVIER B.V. and Science Press. All rights reserved.
KeywordSupercapacitor Activated graphene Bending rigidity Volumetric capacitance Pore structure
Funding OrganizationNational Natural Science Foundation of China ; Major Special Projects of the Plan ? ; Science and Technology Innovation
DOI10.1016/j.jechem.2022.04.0282095-4956
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[22078164] ; National Natural Science Foundation of China[22079164] ; Major Special Projects of the Plan ?[2025?] ; Major Special Projects of the Plan ?[2019B10045] ; Science and Technology Innovation
WOS Research AreaChemistry ; Energy & Fuels ; Engineering
WOS SubjectChemistry, Applied ; Chemistry, Physical ; Energy & Fuels ; Engineering, Chemical
WOS IDWOS:000798209300001
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/174459
Collection中国科学院金属研究所
Corresponding AuthorRuan, Dianbo; Liu, Yilun; Li, Feng
Affiliation1.Ningbo Univ, Inst Adv Energy Storage Technol & Equipment, Ningbo 315211, Zhejiang, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China
3.Tianjin Univ, Sch Chem Engn & Technol, State Key Lab Chem Engn, Tianjin 300350, Peoples R China
4.Ningbo CRRC New Energy Technol Co Ltd, Ningbo 315112, Zhejiang, Peoples R China
5.Xi An Jiao Tong Univ, Sch Aerosp, Lab Multiscale Mech & Med Sci, Xian 710049, Shaanxi, Peoples R China
6.Univ Cambridge, Dept Mat Sci & Met, Cambridge CB3 0FS, England
7.Jilin Univ, Coll Phys, Key Lab Phys & Technol Adv Batteries, Minist Educ, Changchun 130012, Jilin, Peoples R China
8.Zhengzhou Univ, Sch Mat Sci & Engn, Zhengzhou 450001, Henan, Peoples R China
Recommended Citation
GB/T 7714
Wang, Yuzuo,Chen, Jing,Qin, Huasong,et al. Stress-assisted design of stiffened graphene electrode structure toward compact energy storage[J]. JOURNAL OF ENERGY CHEMISTRY,2022,71:478-487.
APA Wang, Yuzuo.,Chen, Jing.,Qin, Huasong.,Chen, Ke.,Li, Zhuangnan.,...&Li, Feng.(2022).Stress-assisted design of stiffened graphene electrode structure toward compact energy storage.JOURNAL OF ENERGY CHEMISTRY,71,478-487.
MLA Wang, Yuzuo,et al."Stress-assisted design of stiffened graphene electrode structure toward compact energy storage".JOURNAL OF ENERGY CHEMISTRY 71(2022):478-487.
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