IMR OpenIR
Understanding the Lithium Storage Mechanism of Ti3C2TX MXene
Cheng, Renfei; Hu, Tao; Zhang, Hui; Wang, Chunmei; Hu, Minmin; Yang, Jinxing; Cui, Cong; Guang, Tianjia; Li, Changji; Shi, Chao; Hou, Pengxiang; Wang, Xiaohui
2019-01-17
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY C
ISSN1932-7447
Volume123Issue:2Pages:1099-1109
AbstractMXenes, as an emerging family of conductive two-dimensional materials, hold promise for late-model electrode materials in Li-ion batteries. A primary challenge hindering the development of MXenes as electrode materials is that a complete understanding of the intrinsic storage mechanism underlying the charge/discharge behavior remains elusive. This article presents two key discoveries: first, the characteristics of the Ti3C2TX structure can be modified systematically by calcination in various atmospheres, and second, these structural changes greatly affect Li-ion storage behavior, which reveals the mechanism for lithium storage in Ti3C2TX MXene. Specifically, via ammonization, the interlayer spacing gets dilated and uniform, giving rise to only one redox couple. In stark contrast, there are two well-recognized redox couples corresponding to two interlayer spacings in pristine Ti3C2TX MXene, in which Li-ion (de)intercalation occurs between interlayers in a sequential manner as evidenced by ex situ X-ray diffraction (XRD). Notably, the XRD diffraction peaks shift hardly in the whole range of charge/discharge voltage, indicating a zero-strain feature upon Li-ion (de)intercalation. Moreover, the diffusion-controlled contribution percentage to capacity inversely depends on the scan rate. The understanding suggests a new design principle of the MXene anode: reduced lateral size to shorten the diffusion path and dilated interlayer spacing.
Indexed BySCI
Language英语
WOS IDWOS:000456350600013
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81443
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Cheng, Renfei,Hu, Tao,Zhang, Hui,et al. Understanding the Lithium Storage Mechanism of Ti3C2TX MXene[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2019,123(2):1099-1109.
APA Cheng, Renfei.,Hu, Tao.,Zhang, Hui.,Wang, Chunmei.,Hu, Minmin.,...&Wang, Xiaohui.(2019).Understanding the Lithium Storage Mechanism of Ti3C2TX MXene.JOURNAL OF PHYSICAL CHEMISTRY C,123(2),1099-1109.
MLA Cheng, Renfei,et al."Understanding the Lithium Storage Mechanism of Ti3C2TX MXene".JOURNAL OF PHYSICAL CHEMISTRY C 123.2(2019):1099-1109.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Cheng, Renfei]'s Articles
[Hu, Tao]'s Articles
[Zhang, Hui]'s Articles
Baidu academic
Similar articles in Baidu academic
[Cheng, Renfei]'s Articles
[Hu, Tao]'s Articles
[Zhang, Hui]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Cheng, Renfei]'s Articles
[Hu, Tao]'s Articles
[Zhang, Hui]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.