| 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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| 发表期刊 | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
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| 2020-07-07 | |
| 页码 | 10 |
| ISSN | 1433-7851 |
| 摘要 | 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. |
| 关键词 | capacitive energy storage in situ Raman spectroscopy ion sieving effect spatial charge density zinc ion hybrid capacitor |
| DOI | 10.1002/anie.202005270 |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000546158900001 |
| 关键词[WOS] | RAMAN-SPECTROSCOPY ; DOPED GRAPHENE ; SUPERCAPACITORS ; PERFORMANCE ; ELECTROLYTES ; DESOLVATION ; RANGE ; OXIDE ; IONS |
| WOS研究方向 | Chemistry |
| WOS类目 | Chemistry, Multidisciplinary |
| 项目资助者 | 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] |
| 论文分区 | 一类 |
| 力学所作者排名 | 5 |
| RpAuthor | Liu, Feng ; Qu, Liangti |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/84750 |
| 专题 | 非线性力学国家重点实验室 |
| 作者单位 | 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 |
| 推荐引用方式 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. |
| 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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| Jp2020194.pdf（6845KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 下载 | |
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