Nb2O5 nanotubes on carbon cloth for high performance sodium-ion capacitors

作     者：Rui Jia Yuan Jiang Rui Li Ruiqing Chai Zheng Lou Guozhen Shen Di Chen 贾蕊;姜源;李蕊;柴瑞青;娄正;沈国震;陈娣

作者机构：School of Mathematics and PhysicsUniversity of Science and Technology BeijingBeijing 100083China State Key Laboratory for Superlattices and MicrostructuresInstitute of SemiconductorsChinese Academy of SciencesBeijing 100083China Robert Frederick Smith School of Chemical and Biomolecular EngineeringCornell UniversityIthacaNY 14853USA 

基　　金：supported by the National Natural Science Foundation of China(51672308 51972025 and 61888102) 

出 版 物：《Science China Materials》 (中国科学（材料科学（英文版）)

年 卷 期：2020年第63卷第7期

页      码：1171-1181页

摘      要：Hybrid sodium-ion capacitors(SICs)bridge the gap between the supercapacitors(SCs)and batteries and have huge potential applications in large-scale energy ***,designing appropriate anode materials with fast kinetics behavior as well as long cycle life to match with the cathode electrodes remains a crucial ***,Nb2O5 nanotubes and nanowire-to-nanotube homo-junctions were directly grown on the carbon cloth(CC)via a simple hydrothermal process through regulating the pH value of *** as-prepared Nb2O5@CC nanotubes displayed a high reversible capacity of 175 mA hg-1 at the current density of 1Ag-1 with the coulombic efficiency of 97%after 1500 ***,the SICs fabricated with Nb2O5@CC and activated carbon(AC)electrode materials showed a high energy density of 195 W h kg-1 at 120 W kg-1,a power density of 7328 W kg-1 at 28 W hkg-1and 80%of the capacitance retention after 5000 ***,the flexible SIC devices can operate normally at various bendable *** Nb2O5@CC nanotubes in this work can be promising electrode materials in flexible and wearable energy storage devices.

主 题 词：nanotubes homojunctions Nb2O5 sodium-ion capacitors 

学科分类：080801[080801] 0808[工学-自动化类] 07[理学] 070205[070205] 08[工学] 080501[080501] 0805[工学-能源动力学] 0702[理学-物理学类] 

核心收录：

D　O　I：10.1007/s40843-020-1278-9

馆 藏 号：203941919...