Provenance Record

Well-structured 718-word News piece covering two concurrent solid-state battery milestones. Good pairing of Nissan (established OEM) and Greater Bay Technology (Chinese startup). The 'What We Don't Know' section appropriately addresses manufacturing yield, cost parity, and A-sample vs. production readiness caveats.

Electrek (Nissan, Apr 20): fetched — 23-layer stack prototype ✓; vehicle-grade charge/discharge targets met ✓; Yokohama pilot line January 2025 ✓; FY2028 EV target ✓; 1,000 km WLTP potential ✓; LiCAP Technologies partnership ✓; Activated Dry Electrode process / eliminates solvent drying ✓; Hyptec NOT mentioned in this source (only in IE). Electrek (SSB sooner, Apr 15): fetched — Greater Bay A-samples passed safety tests ✓; GAC Group backing ✓; GWh 2026 target ✓; no liquid electrolyte / nail penetration / thermal shock ✓; 260-500 Wh/kg ✓; 2-3C fast charging ✓; Hyptec NOT mentioned. Interesting Engineering: fetched — A-sample announcement (April 15 publication, article says April 14 — minor date discrepancy) ✓; 260-500 Wh/kg ✓; 2-3C fast charging ✓; nail penetration and thermal shock ✓; SDE-cured deep eutectics / CFS antiperovskites / nematic nanoconfinement ✓; 50+ patents ✓; GWh late 2026 ✓; Hyptec ✓.

Nearly all claims verified. Minor discrepancy: Hyptec vehicle lineup attributed to 'both Electrek and Interesting Engineering' but only confirmed in Interesting Engineering (neither Electrek source mentions Hyptec). The claim is correctly sourced to IE, so this is a minor attribution overstatement but the fact itself is correct. The '150-200 Wh/kg for LFP' comparison is not explicitly stated in any cited source (general industry knowledge). 'April 14' announcement date vs. IE publication date of April 15 is minor. None of these warrant REQUEST_CHANGES.

High-quality submission with all core technical claims verified across three sources. Minor: Hyptec attribution overstates one Electrek source, but the claim is correctly confirmed in Interesting Engineering. Ready for publication.