Top-down synthesis of interconnected two-dimensional carbon/antimony hybrids as advanced anodes for sodium storage
| Autor: | Chao Wu, Laifa Shen, Peter Kopold, Yan Yu, Joachim Maier, Yu Jiang, Shuangqiang Chen, Peter A. van Aken |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Nanostructure Renewable Energy Sustainability and the Environment Contact resistance Energy Engineering and Power Technology chemistry.chemical_element Nanoparticle Nanotechnology 02 engineering and technology Electrolyte 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Anode chemistry Electrode General Materials Science Nanodot 0210 nano-technology Carbon |
| Zdroj: | Energy Storage Materials. 10:122-129 |
| ISSN: | 2405-8297 |
| DOI: | 10.1016/j.ensm.2017.08.011 |
| Popis: | Nanoparticle-based electrode materials have sparked enormous excitement in the sodium-ion battery community because of potentially fast transport kinetics. However, they may suffer from many challenging static and dynamic problems, such as agglomeration of nanoparticles, high contact resistance, volume change, and instability of solid electrolyte interphase. Herein, we develop inter-connected 2D carbon nanosheets in which ultrasmall 0D Sb nanodots are embedded homogenously through a previously unexplored “top-down” strategy. Starting from the laminar structure K3Sb3P2O14, H3Sb3P2O14 nanosheets are exfoliated by ion exchange and then serve as templates for the synthesis of carbon sheets and Sb nanodots. Such combination of multi-dimensional and multi-scale nanostructures in the electrode materials lead to excellent electron/ion transport kinetics and pronounced integrity of the electrode structure on cycling, providing a promising pathway for developing advanced electrode materials in terms of reversibility, rate capability and cycle life. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect