Researchers created the ‘next generation of metal batteries‘ that last twice as long and charge faster than before.
Recently published in the journal Nature Energy, the new research by Penn State University, making significantly longer-lasting, faster-charging, and safer lithium batteries.
Scientists say these new batteries, using a three-dimensional, cross-linked polymer sponge, could be much safer than standard lithium batteries
Above, three-dimensional, cross-linked polymer sponge, which prevents dendritic growth. Image credit Donghai Wang, Penn State.
Donghai Wang, professor of mechanical engineering and the principal investigator of the project, explains:
“This project aims to develop the next generation of metal batteries. Lithium metal has been tried in batteries for decades, but there are some fundamental issues that inhibit their advancement.
Our approach was to use a polymer on the interface of Li metal. The material acts as a porous sponge that not only promotes ion transfer, but also inhibits deterioration.
This allowed the metal plating to be free of dendrites, even at low temperatures and fast charge conditions.”
Under additional strain, like in the fast-charging methods desired in electrical vehicles, lithium ion (Li) batteries are vulnerable to dendritic growth — needle-like formations that can reduce cycle life and potentially cause safety issues — including fires or explosions.
source Penn State University