II-VI enters lithium sulfur market for solid state battery cells

II-VI enters lithium sulfur market for solid state battery cells

Business news |
By Nick Flaherty

II-VI has been working on lithium-sulfur/selenium materials for cathodes for seven years as they are compatible with high-capacity anodes and emerging solid-state electrolyte chemistries for Li-ion batteries but don’t require cobalt.

The proprietary cathode technology has the potential to significantly enhance the performance of lithium-ion batteries for ground, sea, and air transportation infrastructures; the deployment of energy storage at scale; and consumer electronics. II-VI’s cathode technology is free of cobalt, a designated conflict mineral.

“We are excited about the high performance of our cathode technology in battery cell testing, and we look forward to sharing the results at the workshop with major battery end users and technology experts,” said Dr. Chris Koeppen, Chief Technology Officer. “II-VI’s cathode technology can be tailored to the application by adjusting the mix of sulfur and selenium: Greater sulfur content maximizes energy storage while greater selenium content maximizes power delivery and reduces charging time.”

The technology is being announced at the Battery 500 Consortium led by Pacific Northwest National Laboratory (PNNL) of the US Department of Energy.


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