Abstract
A novel silicon nanowire film anode was successfully prepared by a combination of magnetron sputtering deposition and metal-catalyzed electroless etching technology. Scanning electron microscopy revealed the formation of a Si film composed of nanowires with a diameter of ~70 nm and lengths of ~3.5 μm. As-prepared Si nanowire film is directly grown on current collectors without binders and carbon additives, which provides a good contact and adhesion of them to current collector. Furthermore, the defined spacing of nanoscale Si nanowire allows Si to undergo large volume change during the alloying/dealloying process without loss of its integrity. These structural features of the resulting Si nanowire make it a promising anode for lithium-ion batteries with remarkably improved electrochemical performance compared with the Si film-based electrode prepared without metal-catalyzed electroless etching process.
Original language | English |
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Pages (from-to) | 1-6 |
Number of pages | 6 |
Journal | Ionics |
Volume | 24 |
Issue number | 2 |
DOIs | |
Publication status | Accepted/In press - Jul 16 2017 |
Externally published | Yes |
Keywords
- Anode
- Lithium-ion battery
- Magnetron sputtering deposition
- Metal-catalyzed electroless etching
- Si nanowire film
ASJC Scopus subject areas
- Chemical Engineering(all)
- Materials Science(all)
- Engineering(all)
- Physics and Astronomy(all)