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QuantumScape testing 24-layer prototype Solid-state EV battery cells

Image for representation purposes only. Source: QuantumScape

Solid-state battery developer QuantumScape has recently shipped its first 24-layer prototype solid-state lithium-metal battery cells to EV automakers for testing. The company claims this as a key milestone for the year, and a step towards the commercialization of this technology. 

With 24 layers, each comprising a solid-state separator, a cathode, and an in-situ-formed lithium-metal anode, these prototype cells have capacities in the multi-amp-hour range, an important aspect hat the company believes is relevant for a variety of applications, including automotive and consumer electronics.

With these cells, the OEMs can start the testing process at their facilities and provide feedback on the performance of the cells. QuantumScape still has substantial work ahead to bring this technology to market. 

This includes improvements to the quality, consistency, and throughput of its production processes, and additional enhancements on the product side, such as increased cathode capacity loading and improved packaging efficiency. The company expects to deliver improvements on these fronts in subsequent generations of A, B, and C samples over the coming years.

"I'm proud of our team for all the effort and determination that went into achieving this milestone, especially in light of the challenges we encountered this year," said Jagdeep Singh, CEO and Co-Founder of QuantumScape. "While this milestone brings us closer to our ultimate goal, there's still a lot to do before this technology becomes a commercial product, and we now turn our attention to this important work."

The prototype 'A0' cells were built in QuantumScape's new cell architecture - a hybrid between prismatic and pouch cells - designed to support the uniaxial expansion and contraction of the lithium metal during charge and discharge. 

The California-based company is backed by The Volkswagen Group and Bill Gates among a host of investors.  

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Author : Dhiyanesh Ravichandran
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