Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8032764 | Thin Solid Films | 2018 | 24 Pages |
Abstract
A multi-layered graphene oxide-carbon/Si-island thin film/graphene oxide-carbon electrode is prepared as a very promising anode material for rechargeable Li-ion batteries. In this approach, graphene oxide-carbon layers are introduced to improve the adhesion (between the Si-island and copper current collector) and conductivity. The Si-island (diameter: 700 μm; array distance: 480 μm) is sputtered using a metal shadow mask. The strain during the insertion and extraction of the Li ions is adequately suppressed by the space among the neighboring Si-islands. This results in a superior cycle retention of 86.3% with a reversible discharge capacity of 940 mAh gâ 1 after 105 cycles.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Sun-Young Lee, Jung-Ha Kim, Wan Sik Hwang, Seungdu Kim, Jong-Seong Bae, Jong Pil Kim, Euh Duck Jeong,