Abstract
The prevention of Li dendrite growth in Li-metal secondary cells is investigated using high-Li-content electrodes. Li powder is formed using droplet emulsions, and the powder is then used to fabricate porous Li-powder electrodes that are tested against Li-foil electrodes. Scanning electron microscopy results show that dendrites form in a Li-foil cell when the cell is charged and discharged to 25% of the theoretical Li capacity (965 mAhg-1) at 1/3 C-rate (5mAcm-2). This dendrite formation causes cell failure after 10 cycles. No dendrites are observed in the Li-powder cell tested for 250 cycles. Li-powder anodes can be used directly in high-capacity cells such as Li-air or Li-S cells.
| Original language | English |
|---|---|
| Pages (from-to) | A1551-A1553 |
| Journal | Journal of the Electrochemical Society |
| Volume | 159 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 2012 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Renewable Energy, Sustainability and the Environment
- Surfaces, Coatings and Films
- Electrochemistry
- Materials Chemistry
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