Coracle Research https://www.coracleresearch.com/research/ Technical notes on hard problems in industrial R&D, paired with patent-application-grade disclosures filed as §102 defensive prior art. en-US Coracle Research, CC-BY-4.0 Tue, 21 Apr 2026 12:00:00 +0000 hand-written Chromium poisoning and the 4.9-year Bloom stack https://www.coracleresearch.com/research/01-bloom-cathode/ https://www.coracleresearch.com/research/01-bloom-cathode/ Tue, 21 Apr 2026 12:00:00 +0000 Coracle Research The first deployed cohort of Bloom's solid-oxide stacks fell well short of the ten-year service-life expectation. Three mechanisms on the cathode side degrade the cell at once, and industry mitigation addresses only the most visible. This note works each mechanism from first principles and specifies a graded-microstructure cathode architecture that suppresses all three with minimal changes to the existing co-fire process flow.

Paired with a 32-page technical disclosure under 35 U.S.C. §102 defensive publication. Zenodo DOI: 10.5281/zenodo.19683758.

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