Loading...
Please wait, while we are loading the content...
Similar Documents
Highly stable GeOx@C core–shell fibrous anodes for improved capacity in lithium-ion batteries
| Content Provider | Semantic Scholar |
|---|---|
| Author | Li, Meng Zhou, Dan Feng Song, Wei-Li Li, Xiaogang Fan, Li-Zhen |
| Copyright Year | 2015 |
| Abstract | As a promising high capacity electrode material for lithium-ion batteries, germanium anodes are still to date restricted by the large volume change (>300%) during repeated cycling, which leads to a short cycle life and poor cycle stability in practical application. To overcome these challenges, herein a facile fabrication is reported to encapsulate GeOx nanoparticles into hollow carbon shells using co-axial electrospinning. This core–shell structure has shown remarkable improvements in alleviating the volume change of GeOx during cycling, minimizing the contact area between electrolyte and GeOx to form a stable solid electrolyte interface film, and providing enhanced electrical conductivity. In addition, Ge nanoparticles in the GeOx composite can promote the reversible capacity for the reversible utilization of Li2O. As a result, such a GeOx@C composite electrode exhibits excellent cycling ability with a reversible specific capacity of 875 mA h g−1 at 160 mA g−1 after 400 cycles, along with an improved rate capacity of 513 mA h g−1 at a high current density of 1600 mA g−1 upon 500 cycles. |
| Starting Page | 19907 |
| Ending Page | 19912 |
| Page Count | 6 |
| File Format | PDF HTM / HTML |
| DOI | 10.1039/C5TA05400A |
| Volume Number | 3 |
| Alternate Webpage(s) | http://www.rsc.org/suppdata/c5/ta/c5ta05400a/c5ta05400a1.pdf |
| Alternate Webpage(s) | https://doi.org/10.1039/C5TA05400A |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
