Abstract
A three-dimensional cellular silicon-based anode was prepared by casting milled silicon powders into the "valley-ridge" copper architecture, then its electrochemical property and failure mechanism were studied by means of charging-discharging (C-D) test, cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). In comparison with common 2D anode fabricated by "slurry-coating" technology on flat copper foil, the 3D copper framework has shown a great structure advantage in restricting severe volume changes of silicon particles. This "stress-alleviated" action can effectively impede strain-induced loosening happened inside electrodes during charging and discharging, and consequently improve cycle-life and coulombic efficiency of silicon-based anode.
| Original language | English |
|---|---|
| Pages (from-to) | 930-934 |
| Number of pages | 5 |
| Journal | Electrochemistry Communications |
| Volume | 9 |
| Issue number | 5 |
| DOIs | |
| State | Published - May 2007 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
Keywords
- Anode
- Current collector
- Lithium ion battery
- Silicon
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