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  "notes": "Includes a direct critique of a specific slide (#18) from a QuantumScape presentation.",
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      "text": "A second expert – Prof. Jeff Dahn, a world-respected solid state researcher – states that symmetric cells have zero average voltage and are “useless from a practical point of view,” although they can provide other significant information.",
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      "text": "Dendrites data slide from QS December 8th “Battery Showcase” – slide #18",
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      "text": "Quantumscape’s dendrite breakthrough claim rests on a single test shown at their Dec 8th Battery Showcase event: “solid-state separator resists dendrites even at very high current density.” The presentation is already troubling as it cherry-picks different lab prototypes for each slide. However, the dendrites data takes the mixing and matching to an even more audacious level, using what’s called a “Li/Li symmetric cell” – which is not even a real-world solid-state battery. The other slides used 30/x30mm or 70x70mm lab samples – which are at least battery cells, albeit single-layer and commercially irrelevant.",
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      "kind": "quote",
      "text": "“This is lithium/lithium. It’s not a battery. You just have a thick lithium foil on both sides, and you’ve got your fancy solid-state separator between the two pieces of lithium foil, probably just some pressure on it, and you’ve warmed it up to 45°C and then you’re driving a small amount of current.” - Solid state battery expert, with extensive experience with ceramic separators",
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      "text": "“This is lithium/lithium. It’s not a battery. You just have a thick lithium foil on both sides, and you’ve got your fancy solid-state separator between the two pieces of lithium foil, probably just some pressure on it, and you’ve warmed it up to 45°C and then you’re driving a small amount of current.” — Solid state battery expert, with extensive experience with ceramic separators",
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      "text": "Source: https://s26.q4cdn.com/263384136/files/doc_presentation/2021/1/Data-Launch-Updated-Post-Presentation-20210107-2.pd; Jeff Dahn Research Group https://www.dal.ca/diff/dahn/research/adv_diagnostics/symm_cells.html#:~:text=Symmetric%20Dion%20cells%20have,the%20other%20wouldn't).",
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      "text": "Red flag 1: Lab test used to prove “dendrite resistance” doesn’t even use a real battery cell. Leading solid state experts: “It’s not a battery”; practically “useless”",
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      "text": "3) Phony claim A: Solid-state material resists dendrites",
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