气候变化领域集成服务门户(CCPortal): Cationic intermediates assisted self-assembly two-dimensional Ti3C2Tx/rGO hybrid nanoflakes for advanced lithium-ion capacitors

CCPortal

DOI	10.1016/j.scib.2020.12.026
	Cationic intermediates assisted self-assembly two-dimensional Ti3C2Tx/rGO hybrid nanoflakes for advanced lithium-ion capacitors
	Yi S.; Wang L.; Zhang X.; Li C.; Liu W.; Wang K.; Sun X.; Xu Y.; Yang Z.; Cao Y.; Sun J.; Ma Y.
发表日期	2021
ISSN	20959273
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
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
语种	英语
来源期刊	Science Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207647
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
推荐引用方式 GB/T 7714	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],2021.
APA	Yi S..,Wang L..,Zhang X..,Li C..,Liu W..,...&Ma Y..(2021).Cationic intermediates assisted self-assembly two-dimensional Ti3C2Tx/rGO hybrid nanoflakes for advanced lithium-ion capacitors.Science Bulletin.
MLA	Yi S.,et al."Cationic intermediates assisted self-assembly two-dimensional Ti3C2Tx/rGO hybrid nanoflakes for advanced lithium-ion capacitors".Science Bulletin (2021).