Synthesis and Electrochemical Properties of Two-Dimensional Hafnium Carbide
文献类型：期刊论文
| 作者 | Zhou, J; Zha, X; Zhou, X ; Chen, F; Gao, G; Wang, S; Shen, C; Chen, T; Zhi, C; Eklund, P
|
| 刊名 | ACS NANO
 |
| 出版日期 | 2017 |
| 卷号 | 11期号:4页码:3841-3850 |
| 关键词 | MXenes selective etching 2D materials DFT calculations electrochemical properties |
| ISSN号 | 1936-0851 |
| DOI | 10.1021/acsnano.7b00030 |
| 文献子类 | Article |
| 英文摘要 | We demonstrate fabrication of a two-dimensional Hf-containing MXene, Hf3C2Tz, by selective etching of a layered parent Hf-3[Al(Si)](4)C-6 compound. A substitutional solution of Si on Al sites effectively weakened the interfacial adhesion between Hf-C and Al(Si)-C sublayers within the unit cell of the parent compound, facilitating the subsequent selective etching. The underlying mechanism of the Si-alloying-facilitated etching process is thoroughly studied by first-principles density functional calculations. The result showed that more valence electrons of Si than Al weaken the adhesive energy of the etching interface. The MXenes were determined to be flexible and conductive. Moreover, this 2D Hf-containing MXene material showed reversible volumetric capacities of 1567 and 504 mAh cm(-3) for lithium and sodium ions batteries, respectively, at a current density of 200 mAg(-1) after 200 cycles. Thus, Hf3C2Tz MXenes with a 2D structure are candidate anode materials for metal-ion intercalation, especially for applications where size matters. |
| 电子版国际标准刊号 | 1936-086X |
| WOS关键词 | TRANSITION-METAL CARBIDES ; HIGH VOLUMETRIC CAPACITANCE ; 2D TITANIUM CARBIDE ; LI-ION BATTERIES ; ENERGY-STORAGE ; MECHANICAL-PROPERTIES ; MOLYBDENUM CARBIDE ; SURFACE-STRUCTURE ; LAYERED CARBIDES ; MAX PHASE |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000400233200042 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/285136]  |
| 专题 | 高能物理研究所_多学科研究中心 高能物理研究所_粒子天体物理中心 高能物理研究所_核技术应用研究中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Zhou, J,Zha, X,Zhou, X,et al. Synthesis and Electrochemical Properties of Two-Dimensional Hafnium Carbide[J]. ACS NANO,2017,11(4):3841-3850. |
| APA | Zhou, J.,Zha, X.,Zhou, X.,Chen, F.,Gao, G.,...&柴之芳.(2017).Synthesis and Electrochemical Properties of Two-Dimensional Hafnium Carbide.ACS NANO,11(4),3841-3850. |
| MLA | Zhou, J,et al."Synthesis and Electrochemical Properties of Two-Dimensional Hafnium Carbide".ACS NANO 11.4(2017):3841-3850. |
入库方式： OAI收割
来源：高能物理研究所
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