| Microspheric Na(2)Ti(3)O(7) consisting of tiny nanotubes: an anode material for sodium-ion batteries with ultrafast charge-discharge rates. | |
| | |
MedLine Citation:
|
PMID: 23203161 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
Conventionally, rechargeable batteries with a fast charge-discharge rate, while being able to be implemented in large-scale applications with low prices, are critical for new energy storage systems. In this work, first-principles simulations were employed to theoretically investigate the insertion of sodium into the Na(2)Ti(3)O(7) structure. The result discovered that the theoretical capacity of Na(2)Ti(3)O(7) was 311 mA h g(-1). Furthermore, a microspheric Na(2)Ti(3)O(7) material consisting of tiny nanotubes of ca. 8 nm in outside diameter and a few hundred nanometers in length has been synthesized. The galvanostatic charge-discharge measurements, using the as-prepared Na(2)Ti(3)O(7) nanotubes as a working electrode with a voltage range of 0.01-2.5 V vs. Na(+)/Na, disclosed that a high capacity was maintained even under an ultrafast charge-discharge rate. At a current density of 354 mA g(-1), the discharge capacity was maintained at 108 mA h g(-1) over 100 cycles. Even at a very large current density of 3540 mA g(-1), the discharge capacity was still 85 mA h g(-1). HRTEM analysis and electrochemical tests proved that sodium ions could not only intercalate into the Na(2)Ti(3)O(7) crystal, but could also be stored in the intracavity of the nanotubes. All of the results disclose that the as-prepared Na(2)Ti(3)O(7) nanotubes are able to be used as anode materials in large-scale applications for rechargeable sodium-ion batteries at low cost while maintaining excellent performance. |
| | |
Authors:
|
Wei Wang; Chengjun Yu; Zheshuai Lin; Jungang Hou; Hongmin Zhu; Shuqiang Jiao |
Publication Detail:
|
Type: JOURNAL ARTICLE Date: 2012-12-3 |
Journal Detail:
|
Title: Nanoscale Volume: - ISSN: 2040-3372 ISO Abbreviation: Nanoscale Publication Date: 2012 Dec |
Date Detail:
|
Created Date: 2012-12-3 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 101525249 Medline TA: Nanoscale Country: - |
Other Details:
|
Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
|
School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China. sjiao@ustb.edu.cn. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Fingolimod compassionate use program : Case study on the concept of a therapy option for multiple sc...
Next Document: Potential Impact of Amyloid Imaging on Diagnosis and Intended Management in Patients With Progressiv...