globalchange  > 气候变化与战略
DOI: 10.1016/j.scib.2020.12.026
论文题名:
Cationic intermediates assisted self-assembly two-dimensional Ti3C2Tx/rGO hybrid nanoflakes for advanced lithium-ion capacitors
作者: Yi S.; Wang L.; Zhang X.; Li C.; Liu W.; Wang K.; Sun X.; Xu Y.; Yang Z.; Cao Y.; Sun J.; Ma Y.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2021
语种: 英语
中文关键词: Energy density ; Lithium-ion capacitor ; MXenes ; Reduced graphene oxide (rGO) ; Two-dimensional (2D) material
英文关键词: Anodes ; Electrolytes ; Energy storage ; Graphene ; Lithium ; Reduced Graphene Oxide ; Self assembly ; Supercapacitor ; Cationic intermediates ; Electroactive sites ; Electrochemical performance ; Electrostatic self assembly ; High reversible capacities ; Lithium-ion capacitors ; Two Dimensional (2 D) ; Ultra-high energies ; Ions
英文摘要: Two-dimensional (2D) material MXenes have been intensively concerned in energy-storage field due to these unique properties of metallic-like conductivity, good hydrophilicity and high volumetric capacity. However, the self-restocking of ultra-thin 2D materials seriously hinders these performances, which significantly inhibits the full exploitation of MXenes in the field of energy storage. To solve this issue, a strategy to prepare delaminated Ti3C2Tx (MXene) nanoflakes/reduced graphene oxide (rGO) composites is proposed using the electrostatic self-assembly between positively charged Ti3C2Tx with tetrabutylammonium ion (TBA+) modification and negatively charged graphene. The nanoflakes of Ti3C2Tx/rGO are well dispersed and arranged in a face-to-face structure to effectively alleviate the self-restacking and provide more electroactive sites for accessible of electrolyte ions. The prepared delaminated Ti3C2Tx/rGO anode shows a high reversible capacity up to 1394 mAh g−1 at a current density of 50 mA g−1. Moreover, a lithium-ion capacitor (LIC) was assembled with delaminated Ti3C2Tx/rGO anode and activated carbon (AC) cathode which can exhibit a specific capacity of 70.7 F g−1 at a current density of 0.1 A g−1 and deliver an ultrahigh energy density of 114 Wh kg−1 at a relatively high power density of 3125 W kg−1. These good electrochemical performances demonstrate the potential of delaminated Ti3C2Tx/rGO as an anode material for lithium-ion capacitors. © 2020 Science China Press
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170481
Appears in Collections:气候变化与战略

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作者单位: Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, 100190, China; School of Engineering Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China; Dalian National Laboratory for Clean Energy, Chinese Academy of Sciences, Dalian, 116023, China; School of Petrochemical Engineering, Liaoning Shihua University, Fushun, 113001, China; Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China; School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, China

Recommended Citation:
Yi S.,Wang L.,Zhang X.,et al. Cationic intermediates assisted self-assembly two-dimensional Ti3C2Tx/rGO hybrid nanoflakes for advanced lithium-ion capacitors[J]. Science Bulletin,2021-01-01
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