Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10624264 | Ceramics International | 2016 | 9 Pages |
Abstract
Due to the characteristics of an electronic insulator, Na2Li2Ti6O14 always suffers from low electronic conductivity as anode material for lithium storage. Via Ag coating, Na2Li2Ti6O14@Ag is fabricated, which has higher electronic conductivity than bare Na2Li2Ti6O14. Enhancing the Ag coating content from 0.0 to 10.0 wt%, the surface of Na2Li2Ti6O14 is gradually deposited by Ag nanoparticles. At 6.0 wt%, a continuous Ag conductive layer is formed on Na2Li2Ti6O14. While, particle growth and aggregation take place when the Ag coating content reaches 10.0 wt%. As a result, Na2Li2Ti6O14@6.0 wt% Ag displays better cycle and rate properties than other samples. It can deliver a lithium storage capacity of 131.4 mAh gâ1 at 100 mA gâ1, 124.9 mAh gâ1 at 150 mA gâ1, 119.1 mAh gâ1 at 200 mA gâ1, 115.8 mAh gâ1 at 250 mA gâ1, 111.9 mAh gâ1 at 300 mA gâ1 and 109.4 mAh gâ1 at 350 mA gâ1, respectively.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Shangshu Qian, Haoxiang Yu, Lei Yan, Peng Li, Xiaoting Lin, Ying Bai, Songjing Wang, Nengbing Long, Miao Shui, Jie Shu,