Solid-state lithium batteries could offer a lightweight, compact, and safe alternative to current lithium batteries. MIT researchers have made a new discovery that could pave the way for solid-state Lithium Battery Development (LSB) development, and it could lead to a prototype battery.
New study explains how dendrites form and how to divert them
- Dendrites are projections of metal that can build up on the lithium surface and penetrate into the solid electrolyte, eventually crossing from one electrode to the other and shorting out the battery cell
- Researchers haven't been able to agree on what gives rise to these metal filaments, nor has there been much progress on how to prevent them and thus make lightweight solid-state batteries a practical option
- New research by MIT Professor Yet-Ming Chiang, graduate student Cole Fincher, and five others at MIT and Brown University seems to resolve the question of what causes dendrite formation
- The solution to the problem appears to be more stress, applied in just the right direction and with the right amount of force
Key Ideas
- The team's next step will be to try to apply these principles to the creation of a functional prototype battery.
- They don't plan to commercialize the system themselves, but rather learn from other companies working on the development of solid-state batteries.
The research team included Christos Athanasiou and Brian Sheldon at Brown University, and Colin Gilgenbach, Michael Wang, and W. Craig Carter at MIT.
- The work was supported by the National Science Foundation, the U.S. Department of Defense, the Defense Advanced Research Projects Agency, and the US Department of Energy.
The Future
- Solid state lithium metal batteries are just a matter of innovation, insight, and creativity away from the market.
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