Architecting Amorphous Vanadium Oxide/MXene Nanohybrid via Tunable Anodic Oxidation for High-Performance Sodium-Ion Batteries

doi:10.1002/aenm.202100757

IHEP OpenIR > 北京同步辐射装置

	Architecting Amorphous Vanadium Oxide/MXene Nanohybrid via Tunable Anodic Oxidation for High-Performance Sodium-Ion Batteries
	BSRF用户
	2021
发表期刊	ADVANCED ENERGY MATERIALS (IF:16.721[JCR-2016],16.457[5-Year])
ISSN	1614-6832
EISSN	1614-6840
卷号	11 期号:22 页码:2100757
条目编号	BSRF00325
文章类型	Article
摘要	Structural engineering and creating atomic disorder in electrodes are promising strategies for highly efficient and rapid charge storage in advanced batteries. Herein, a nanohybrid architecture is presented with amorphous vanadium oxide conformally coated on layered V2C MXene (a-VOx/V2C) via tunable anodic oxidation, which exhibits a high reversible capacity of 307 mAh g(-1) at 50 mA g(-1), decent rate capability with capacity up to 96 mAh g(-1) at 2000 mA g(-1), and good cycling stability as a cathode for sodium-ion batteries. The a-VOx layer enables reversible and fast Na+ insertion/extraction by providing sufficient vacancies and open pathways in the amorphous framework, unlike the irreversible phase transition in its crystalline counterpart, while layered V2C MXene offers abundant electron/ion transfer channels, which are joined together to boost the electrochemical performance. Notably the improved reversibility and structural superiority of the a-VOx/V2C nanohybrid are clearly revealed by in situ Raman, in situ transmission electron microscopy, in situ synchrotron X-ray absorption spectroscopy, and density functional theory calculations, demonstrating a reversible V-O vibration and valence oscillation between V4+ and V5+ in the disordered framework, with robust structural stability and unobstructed Na+ diffusion. This work provides a meaningful reference for the elaborate design of MXene-based nanostructured electrodes toward advanced rechargeable batteries.
DOI	10.1002/aenm.202100757
收录类别	SCI ; ADS
语种	英语
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science ; Physics
WOS类目	Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:000643156200001
ADS Bibcode	2021AdEnM..1100757Z
ADS URL	https://ui.adsabs.harvard.edu/abs/2021AdEnM..1100757Z
ADS引文	https://ui.adsabs.harvard.edu/abs/2021AdEnM..1100757Z/citations
线站	1W1B
引用统计	正在获取... 被引频次：30 [ADS]
文献类型	期刊论文
条目标识符	https://ir.ihep.ac.cn/handle/311005/293093
专题	北京同步辐射装置
推荐引用方式 GB/T 7714	BSRF用户. Architecting Amorphous Vanadium Oxide/MXene Nanohybrid via Tunable Anodic Oxidation for High-Performance Sodium-Ion Batteries[J]. ADVANCED ENERGY MATERIALS,2021,11(22):2100757.
APA	BSRF用户.(2021).Architecting Amorphous Vanadium Oxide/MXene Nanohybrid via Tunable Anodic Oxidation for High-Performance Sodium-Ion Batteries.ADVANCED ENERGY MATERIALS,11(22),2100757.
MLA	BSRF用户."Architecting Amorphous Vanadium Oxide/MXene Nanohybrid via Tunable Anodic Oxidation for High-Performance Sodium-Ion Batteries".ADVANCED ENERGY MATERIALS 11.22(2021):2100757.