Tech Talks Daily

3378: Inside QuantumScape’s Mission to Deliver Safer, Faster-Charging EV Batteries

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Aug 10, 2025
Tim Holme, co-founder and CTO of QuantumScape, dives into the innovative world of solid-state lithium-metal batteries aimed at revolutionizing electric vehicles. He reveals how replacing traditional graphite anodes with lithium metal can unlock faster charging, longer ranges, and enhanced safety. Tim discusses QuantumScape's breakthrough in manufacturing speed and how it plans to collaborate with partners like Volkswagen. He also envisions solid-state batteries powering grid-scale storage and charging stations, shaping the future of energy storage.
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ANECDOTE

Stanford Spin-Out And Long-Term Goal

  • Tim co-founded QuantumScape as a Stanford spin-out about 15 years ago from materials research.
  • He says the goal was to enable longer-range, faster-charging, safer batteries for EVs.
INSIGHT

Why Replace Graphite Anodes

  • QuantumScape removed graphite anodes and replaced them with lithium metal to unlock step-change performance.
  • Tim says graphite production is carbon-intensive and geopolitically concentrated in China.
INSIGHT

Dendrites Solved By Ceramic Separator

  • Lithium metal forms dendrites that short batteries unless constrained by separators.
  • QuantumScape uses a dense ceramic separator to prevent dendrites and improve safety.
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