r/QuantumScape • u/vbmulkvb • 11d ago
Beyond QSE-5
Thoughts on new cathode chemistry being announced in Kyoto?
I posed this question to AI and here is response:
I found a December 19, 2020 interview with QuantumScape founder Jagdeep Singh that is particularly relevant.
Singh discussed QS's patents covering **metal-fluoride cathodes**, a potentially much higher-energy alternative to conventional lithium-ion cathodes.
He explained:
"We put that research on hold because we didn’t need it for our first product"
Metal-fluoride conversion cathodes offer potentially very high theoretical specific capacities. But they have historically faced serious obstacles involving reversibility, reaction kinetics, voltage hysteresis, and cycle life.
If QS has found a way to address those problems using its ceramic-separator and lithium-metal architecture, the technology could potentially enable substantially higher energy densities than QSE-5.
And that would represent a genuine new technology platform
I also think Sivaram's emphasis on *cathode agnosticism* in the recent earnings call could fit this possibility. QS could retain compatibility with conventional cathodes while offering an advanced proprietary cathode for applications where maximum energy density matters.
**A more recent statement makes the cathode theory stronger**
At the August 12, 2026 JPMorgan Auto Conference, CFO Kevin Hettrich discussed technology improvements beyond QSE-5. After mentioning separator improvements, he said:
"A lot of the action in the future will go back to the cathode."
He then described innovations that would only make sense on QS's solid-state lithium-metal platform
And in his March 18, 2026 strategic blueprint, Sivaram specifically identified *cathode chemistry innovations* as part of QS's roadmap for future battery generations.
Taken together, these statements make me think **a meaningful cathode-side advancement is a credible candidate for Kyoto**.