Kinetic-matching between electrodes and electrolyte enabling solid-state sodium-ion capacitors with improved voltage output and ultra-long cyclability
文献类型：期刊论文
| 作者 | Li, Bosen1,3; Xing, Chunxian1; Zhang, Haitao1,3; Hu, Lei2; Zhang, Jiahe1; Jiang, Danfeng1; Su, Peipei1,3; Zhang, Suojiang1,3 |
| 刊名 | Chemical Engineering Journal
 |
| 出版日期 | 2021-10-01 |
| 卷号 | 421 |
| ISSN号 | 13858947 |
| 关键词 | Supercapacitor - Interface states - Textures - Solid electrolytes - Metal ions - Sodium - Sodium compounds - Titanium dioxide - Kinetics |
| DOI | 10.1016/j.cej.2020.127832 |
| 英文摘要 | Sodium-ion capacitors (SICs) are attracting extensive attentions owing to their high energy density and the availability of abundant sodium element. However, kinetic imbalance between cathodes and anodes or between electrodes and electrolytes at interfaces originating from different ions storage mechanisms need to be well minimized. Thus, it is significant to design specific ion-matching enabled electrodes and electrolytes. Here, an ultra-high kinetic TiO2(A)/TiO2(B)@C/CNT nanohybrid electrode with rich textured interfaces and a capacity of 251 mAh g鈭? was fabricated via a 'Phase Engineering' route. In particular, the effects induced by cubic and monoclinic phases were distinguished by an In-situ XRD technique. Moreover, a bi-layered ternary ionogel electrolyte was constructed to achieve optimal kinetic balance and ion matching. Impressively, the optimized bilayer solid electrolyte exhibited an ionic conductivity of 5.22 脳 10-3 S cm鈭? and a high Na+ transference number of ~ 0.611, resulting to a weakened concentration gradient of 0.3 M at 5 A g鈭? and enhanced intercalation/deintercalation of Na+ at the anode/electrolyte interface. The enhanced kinetic matching was verified by a COMSOL Multiphysics simulation. Significantly, the double-kinetic-matching design on both electrodes and electrolyte rendered a sodium-ion capacitor (SIC) with an energy density of 94.8 Wh kg鈭? at 1925.0 W kg鈭? and an ultra-long cyclability of 10,000 cycles at an effective operating potential of 4.0 V. This work demonstrates an effective strategy to high performance solid-state sodium-ion capacitors via the synergistic optimization of electrodes and electrolyte and highlights the importance of understanding the kinetic matching. 漏 2020 Elsevier B.V. |
| 学科主题 | Anodes |
| 项目编号 | This work was financially supported by the National Key Research and Development Program of China (No. 2019YFA0705601), the National Natural Science Foundation of China (No. 21878308), the Major Program of National Natural Science Foundation of China (No. 21890762), and the Science Fund for Creative Research Groups of the National Natural Science Foundation of China (No. 21921005), K. C. Wong Education Foundation. In addition, thanks for the assistance of Center for High Performance Computing. NPU on COMSOL Multiphysics. |
| 出版者 | Elsevier B.V. |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/60312]  |
| 作者单位 | 1.Beijing Key Laboratory of Ionic Liquids Clean Process, Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing; 100190, China 2.School of Energy Materials and Chemical Engineering, Hefei University, Hefei; 230601, China 3.School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing; 100039, China |
| 推荐引用方式 GB/T 7714 | Li, Bosen,Xing, Chunxian,Zhang, Haitao,et al. Kinetic-matching between electrodes and electrolyte enabling solid-state sodium-ion capacitors with improved voltage output and ultra-long cyclability[J]. Chemical Engineering Journal,2021,421. |
| APA | Li, Bosen.,Xing, Chunxian.,Zhang, Haitao.,Hu, Lei.,Zhang, Jiahe.,...&Zhang, Suojiang.(2021).Kinetic-matching between electrodes and electrolyte enabling solid-state sodium-ion capacitors with improved voltage output and ultra-long cyclability.Chemical Engineering Journal,421. |
| MLA | Li, Bosen,et al."Kinetic-matching between electrodes and electrolyte enabling solid-state sodium-ion capacitors with improved voltage output and ultra-long cyclability".Chemical Engineering Journal 421(2021). |
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来源：过程工程研究所
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