GM XFC Cell
Category: Mechanical/Materials
Developers: General Motors
Product Description:General Motors invented an Extreme Fast Charging (XFC) cell technology, which is featured with dual-layer capacitor-assisted cathode and rapid-alloying low-expansion anode. The XFC cells incorporate several components, including dual-layer capacitor-assisted thick LFP (CAL) cathode, unique rapid-alloying low-expansion anode architecture utilizing Chemical Vapor Deposition (CVD) Silicon Carbon (SiC), multi-functional separator and customized electrolyte formulation. XFC cell demonstrates superior charging capability (refilling 70% driving range in 5.6-min) with excellent XFC lifespan durability (360,000 miles), which is adaptable for multiple GM electric vehicles. The GM world-first XFC cell has numerous applications, both within automotive markets and beyond. This technology is supported by a patent portfolio consisting of multiple applications filed worldwide and has been validated at both GM’s internal lab-scale cell fabrication line and license’s existing manufacturing lines, in both pouch and prismatic cell formats. It reduces cell resistance and maintains an ultra-stable resistance trend throughout its lifecycle, which is crucial for controlling temperature rise during XFC, thereby enabling a simplified cooling solution. The embedded capacitor within the cathode eliminates the need for a pre-charger, improves the pack's overall UBE and maximizes AC heating power for warming the cells while preventing lithium plating in low temperatures. This cell technology is poised to be a cost-effective and ultra-fast charging solution for GM’s next-generation EV.
Developers: General Motors
Product Description:General Motors invented an Extreme Fast Charging (XFC) cell technology, which is featured with dual-layer capacitor-assisted cathode and rapid-alloying low-expansion anode. The XFC cells incorporate several components, including dual-layer capacitor-assisted thick LFP (CAL) cathode, unique rapid-alloying low-expansion anode architecture utilizing Chemical Vapor Deposition (CVD) Silicon Carbon (SiC), multi-functional separator and customized electrolyte formulation. XFC cell demonstrates superior charging capability (refilling 70% driving range in 5.6-min) with excellent XFC lifespan durability (360,000 miles), which is adaptable for multiple GM electric vehicles. The GM world-first XFC cell has numerous applications, both within automotive markets and beyond. This technology is supported by a patent portfolio consisting of multiple applications filed worldwide and has been validated at both GM’s internal lab-scale cell fabrication line and license’s existing manufacturing lines, in both pouch and prismatic cell formats. It reduces cell resistance and maintains an ultra-stable resistance trend throughout its lifecycle, which is crucial for controlling temperature rise during XFC, thereby enabling a simplified cooling solution. The embedded capacitor within the cathode eliminates the need for a pre-charger, improves the pack's overall UBE and maximizes AC heating power for warming the cells while preventing lithium plating in low temperatures. This cell technology is poised to be a cost-effective and ultra-fast charging solution for GM’s next-generation EV.
