US battery developer QuantumScape has started delivering B1 samples of its QSE-5 solid-state battery to partners. The cells contain separators manufactured using the companyʼs proprietary Cobra process. This method is intended to enable more efficient production and prepare for the transition to industrial manufacturing.
Increased energy density, reduced charging time
The QSE-5 cell is QuantumScapeʼs first commercial product. Based on an anode-free architecture, it uses a ceramic solid separator instead of the polymer separator commonly found in conventional lithium-ion batteries. Eliminating anode materials, such as graphite or silicon, increases energy density and reduces charging time. QuantumScape claims its batteries can charge from ten to 80 percent in less than 15 minutes. The energy density is specified as 301 watt-hours per kilogram or 844 watt-hours per liter.
Testing in real-world vehicle applications
The company stresses that the ceramic separator both ensures stability with lithium metal and prevents dendrite formation. Furthermore, the material is nonflammable, offering a higher level of safety than conventional battery cells. The technology is reportedly compatible with various cathode chemistries, including nickel-manganese-cobalt and lithium iron phosphate. QuantumScape is collaborating with automakers, including Volkswagen Group, to test the technology in real-world vehicle applications. Initial deployments are being carried out in the electric Ducati V21L. Meanwhile, QuantumScape is building an automated “Eagle Line” pilot production facility in San Jose to increase production and test reliability at automotive level.
Sources:
https://www.quantumscape.com/quantumscape-announces-shipment-of-b1-samples-achieving-a-key-annual-goal/
https://www.quantumscape.com/technology/#qse-5
