| Maximization of Spatial Charge Density: An Approach to Ultrahigh Energy Density of Capacitive Charge Storage | |
Ma HY1; Chen HW1; Wu MM1; Chi FY1; Liu F(刘峰)2 ; Bai JX3,4; Cheng HH3,4; Li C1; Qu LT1,3,4
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| Source Publication | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
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| 2020-07-07 | |
| Pages | 10 |
| ISSN | 1433-7851 |
| Abstract | Capacitive energy storage has advantages of high power density, long lifespan, and good safety, but is restricted by low energy density. Inspired by the charge storage mechanism of batteries, a spatial charge density (SCD) maximization strategy is developed to compensate this shortage by densely and neatly packing ionic charges in capacitive materials. A record high SCD (ca. 550 C cm(-3)) was achieved by balancing the valance and size of charge-carrier ions and matching the ion sizes with the pore structure of electrode materials, nearly five times higher than those of conventional ones (ca. 120 C cm(-3)). The maximization of SCD was confirmed by Monte Carlo calculations, molecular dynamics simulations, and in situ electrochemical Raman spectroscopy. A full-cell supercapacitor was further constructed; it delivers an ultrahigh energy density of 165 Wh L(-1)at a power density of 150 WL(-1)and retains 120 Wh L(-1)even at 36 kW L-1, opening a pathway towards high-energy-density capacitive energy storage. |
| Keyword | capacitive energy storage in situ Raman spectroscopy ion sieving effect spatial charge density zinc ion hybrid capacitor |
| DOI | 10.1002/anie.202005270 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000546158900001 |
| WOS Keyword | RAMAN-SPECTROSCOPY ; DOPED GRAPHENE ; SUPERCAPACITORS ; PERFORMANCE ; ELECTROLYTES ; DESOLVATION ; RANGE ; OXIDE ; IONS |
| WOS Research Area | Chemistry |
| WOS Subject | Chemistry, Multidisciplinary |
| Funding Organization | National Key R&D Program of China[2016YFA0200200] ; National Key R&D Program of China[2017YFB1104300] ; NSFC[51673026] ; NSFC[51433005] ; NSFC[21674056] ; NSFC-MAECI[51861135202] |
| Classification | 一类 |
| Ranking | 5 |
| Contributor | Liu, Feng ; Qu, Liangti |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/84750 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China; 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 3.Tsinghua Univ, Dept Mech Engn, Minist Educ China, Key Lab Adv Mat Proc Technol, Beijing 100084, Peoples R China; 4.Tsinghua Univ, Dept Mech Engn, State Key Lab Tribol, Beijing 100084, Peoples R China |
| Recommended Citation GB/T 7714 | Ma HY,Chen HW,Wu MM,et al. Maximization of Spatial Charge Density: An Approach to Ultrahigh Energy Density of Capacitive Charge Storage[J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,2020:10.Rp_Au:Liu, Feng, Qu, Liangti |
| APA | Ma HY.,Chen HW.,Wu MM.,Chi FY.,刘峰.,...&Qu LT.(2020).Maximization of Spatial Charge Density: An Approach to Ultrahigh Energy Density of Capacitive Charge Storage.ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,10. |
| MLA | Ma HY,et al."Maximization of Spatial Charge Density: An Approach to Ultrahigh Energy Density of Capacitive Charge Storage".ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020):10. |
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| File Name/Size | DocType | Version | Access | License | ||
| Jp2020194.pdf（6845KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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