Manganese helps aluminium foil electrodes retain their structure
マンガン添加でアルミ箔電極の構造維持へ科学・技術
- Country:
- 🇯🇵 Japan
- Voice:
- 🇺🇸 Katy
英語本文
A research group in Japan has reported progress on aluminium-foil negative electrodes for rechargeable lithium batteries. The group, including Tohoku University's Institute for Materials Research and aluminium company UACJ, announced the results on October 26. Adding a small amount of manganese allowed lithium to move into and out of deep parts of the foil while maintaining a dense electrode structure.
Earlier foil electrodes faced a trade-off. Pores forming early could damage the structure and shorten its life, while keeping the structure intact could trap lithium and reduce usable capacity. The researchers report overcoming this problem, with many pathways for lithium forming spontaneously during battery operation. The team includes Yuki Nakata, Hongyi Li and Tetsu Ichitsubo.
The proposed electrode uses a single foil sheet, avoiding the complex coating process required for conventional graphite negative electrodes. The work appeared online in Communications Materials on October 23. Lower manufacturing costs and reduced environmental impact remain potential future benefits.