Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/133864
Citations | ||
Scopus | Web of Science® | Altmetric |
---|---|---|
?
|
?
|
Type: | Journal article |
Title: | Unique Urchin-like Ca₂Ge₇O₁₆ Hierarchical Hollow Microspheres as Anode Material for the Lithium Ion Battery |
Other Titles: | Unique Urchin-like Ca(2)Ge(7)O(16) Hierarchical Hollow Microspheres as Anode Material for the Lithium Ion Battery |
Author: | Li, D. Feng, C. Liu, H.K. Guo, Z. |
Citation: | Scientific Reports, 2015; 5(1):11326-1-11326-8 |
Publisher: | Springer Nature |
Issue Date: | 2015 |
ISSN: | 2045-2322 2045-2322 |
Statement of Responsibility: | Dan Li, Chuanqi Feng, Hua Kun Liu, Zaiping Guo |
Abstract: | Germanium is an outstanding anode material in terms of electrochemical performance, especially rate capability, but its developments are hindered by its high price because it is rare in the crust of earth, and its huge volume variation during the lithium insertion and extraction. Introducing other cheaper elements into the germanium-based material is an efficient way to dilute the high price, but normally sacrifice its electrochemical performance. By the combination of nanostructure design and cheap element (calcium) introduction, urchin-like Ca2Ge7O16 hierarchical hollow microspheres have been successfully developed in order to reduce the price and maintain the good electrochemical properties of germanium-based material. The electrochemical test results in different electrolytes show that ethylene carbonate/dimethyl carbonate/diethyl carbonate (3/4/3 by volume) with 5wt% fluoroethylene carbonate additive is the most suitable solvent for the electrolyte. From the electrochemical evaluation, the as-synthesized Ca2Ge7O16 hollow microspheres exhibit high reversible specific capacity of up to 804.6mAhg−1 at a current density of 100mAg−1 after 100 cycles and remarkable rate capability of 341.3mAhg−1 at a current density of 4Ag−1 . The growth mechanism is proposed based on our experimental results on the growth process. |
Rights: | © 2015, The Author(s) This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
DOI: | 10.1038/srep11326 |
Grant ID: | http://purl.org/au-research/grants/arc/DP1094261 |
Published version: | http://dx.doi.org/10.1038/srep11326 |
Appears in Collections: | Chemical Engineering publications |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
hdl_133864.pdf | Published version | 1.18 MB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.