| Understanding the Lithium Storage Mechanism of Ti3C2TX MXene | |
| Cheng, Renfei1,2; Hu, Tao1,3,4; Zhang, Hui5; Wang, Chunmei1,2; Hu, Minmin1,2; Yang, Jinxing1,2; Cui, Cong1,2; Guang, Tianjia1,2; Li, Changji1; Shi, Chao1; Hou, Pengxiang1; Wang, Xiaohui1 | |
| Corresponding Author | Wang, Xiaohui(wang@imr.ac.cn) |
| 2019-01-17 | |
| Source Publication | JOURNAL OF PHYSICAL CHEMISTRY C
 |
| ISSN | 1932-7447 |
| Volume | 123Issue:2Pages:1099-1109 |
| Abstract | MXenes, 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. |
| Funding Organization | Youth Innovation Promotion Association, Chinese Academy of Sciences (CAS) ; Shenyang National Laboratory for Materials Science, Institute of Metal Research, CAS ; Special Program for Applied Research on Super Computation of the NSFC-Guangdong Joint Fund (second phase) |
| DOI | 10.1021/acs.jpcc.8b10790 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Youth Innovation Promotion Association, Chinese Academy of Sciences (CAS)[2011152] ; Shenyang National Laboratory for Materials Science, Institute of Metal Research, CAS[2017RP06] ; Special Program for Applied Research on Super Computation of the NSFC-Guangdong Joint Fund (second phase)[U1501501] |
| WOS Research Area | Chemistry ; Science & Technology - Other Topics ; Materials Science |
| WOS Subject | Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
| WOS ID | WOS:000456350600013 |
| Publisher | AMER CHEMICAL SOC |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/131243 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Wang, Xiaohui |
| Affiliation | 1.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Suzhou Univ Sci & Technol, Inst Mat Sci & Devices, Suzhou 215009, Peoples R China 5.Monash Univ, Dept Mat Sci & Engn, Clayton, Vic 3800, Australia |
| 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. |
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