Ampcera Inc. International Battery Company and Xponential Battery Materials (XBM) have signed a MoU to collaborate on the production of a next-generation sustainable, high-energy density, low weight, and cost-effective Sulfur Solid-State Battery (S-SSB) for EVs.

The demand for affordable and sustainable, eMobility battery solutions presents a massive opportunity for new sulfur cathode and solid-state electrolyte technologies in the global EV/3C battery industries. This collaboration between Ampcera and XBM establishes a novel Li-S-SS and Na-S-SS battery development partnership that aims to leverage both company’s chemistries related Li-S/Na-S and Solid-State electrode manufacturing know-how to help OEMs accelerate commercial scale Li-S/Na-S-SS cell production in the US.

The battery chemistry in a Li-S/Na-S Solid-State battery system differs from NMC, LFP, or graphite-based EV Li-ion batteries (LIBs), in which the lithium ions intercalate into accessible space; instead, Li-S-SSB is a conversion system. The cathode active material, sulfur as S₈ covalently bonds with Li or Na ions through a series of reactions to create Li/Na₂S, two Li/Na ions for each sulfur atom, creating some very promising SS battery performance opportunities.

XBM takes abundant waste byproducts from petroleum (sulfur) and paper processing (lignin/tannin) industries to serve as a critical domestic EV battery material supply chain feedstock. According to Phil Roberts, XBM’s CEO, the company’s CarbonX Li-S cathode material is the most sustainable EV battery cathode material with nearly 2x the capacity compared to other LIB cathode materials, at roughly half the cost of competing EV LIB cathode materials.

Ampcera is a US-based company focused on solid-state battery technology. Ampcera’s technology centers around IP-protected sulfide-based solid electrolytes, which offer superior ionic conductivity, enabling fast charging and improved performance.