Back to Search
Start Over
High Capacity Lithium Ion Battery Anodes Using Sn Nanowires Encapsulated Al2O3 Tubes in Carbon Matrix.
- Source :
- Advanced Materials Interfaces; Mar2016, Vol. 3 Issue 5, pn/a-n/a, 8p
- Publication Year :
- 2016
-
Abstract
- Tin (Sn) is one of the promising anode candidates for next generation applications in lithium ion batteries with high energy densities, but it suffers from drastic volume change (about 260%) upon lithiation. To address this issue, herein an efficient method is reported for coating Sn nanowires with an amorphous Al<subscript>2</subscript>O<subscript>3</subscript> layer (Sn-Al<subscript>2</subscript>O<subscript>3</subscript>) based on a combination of mechanical pressure injection technique and partial dissolution of the anodic aluminum oxide template. Further, the Sn nanowires coated with Al<subscript>2</subscript>O<subscript>3</subscript> are dispersed into carbon matrix (Sn-Al<subscript>2</subscript>O<subscript>3</subscript>-C) by ball milling. In this structure, Al<subscript>2</subscript>O<subscript>3</subscript> helps to maintain structural integrity during charge-discharge process, and the introduced carbon matrix enhances electronic conductivity of the overall electrode. As a result, the Sn-Al<subscript>2</subscript>O<subscript>3</subscript>-C nanocomposite exhibits an enhanced cyclic and rate performance, namely, retaining the capacities of 1308.8 mAh g<superscript>−1</superscript> at the current density of 30 mA g<superscript>−1</superscript> after 20 cycles, 1063.3 mAh g<superscript>−1</superscript> at the current density of 200 mA g<superscript>−1</superscript>, and 834.2 mAh g<superscript>−1</superscript> at the current density of 500 mA g<superscript>−1</superscript> after 100 cycles. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 21967350
- Volume :
- 3
- Issue :
- 5
- Database :
- Complementary Index
- Journal :
- Advanced Materials Interfaces
- Publication Type :
- Academic Journal
- Accession number :
- 115275330
- Full Text :
- https://doi.org/10.1002/admi.201500491