| Title |
A high-performance Li-ion anode from direct deposition of Si nanoparticles |
| ID_Doc |
64552 |
| Authors |
Xu, YL; Swaans, E; Chen, SB; Basak, S; Harks, PPRML; Peng, B; Zandbergen, HW; Borsa, DM; Mulder, FM |
| Title |
A high-performance Li-ion anode from direct deposition of Si nanoparticles |
| Year |
2017 |
| Published |
|
| Abstract |
Nanostructured silicon has been intensively investigated as a high capacity Li-ion battery anode. However, the commercial introduction still requires advances in the scalable synthesis of sophisticated Si nanomaterials and electrodes. Moreover, the electrode degradation due to volume changes upon de-/lithiation, low areal electrode capacity, and application of large amounts of advanced conductive additives are some of the challenging aspects. Here we report a Si electrode, prepared from direct deposition of Si nanoparticles on a current collector without any binder or conducting additives, that addresses all of the above issues. It exhibits an excellent cycling stability and a high capacity retention taking advantages of what appears to be a locally protective, yolk-shell reminiscent, solid electrolyte interphase (SEI) formation. Cycling an electrode with a Si nanoparticle loading of 2.2 mg cm(-2) achieved an unrivalled areal capacity retention, specifically, up to 4.2 mAh cm(-2) and similar to 1.5 mAh cm(-2) at 0.8 mA cm(-2) and 1.6 mA cm(-2), respectively. |
| PDF |
https://doi.org/10.1016/j.nanoen.2017.06.011
|
