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In this study, we present an explicitly analytical theory of the ignition delay times (IDTs) for an ammonia\/hydrogen binary fuel. Different from the fitted formulas of IDTs, the current theory adopts the eigenvalue analysis of the Jacobian matrix with a detailed ammonia\u2013hydrogen kinetic model, which retains the essential species and elementary reactions. Comparison with experimental data and computational results from detailed kinetics shows that the theory gives accurate predictions of IDTs over wide ranges of temperatures, pressures, and compositions. The current approach provides a new methodology for fast evaluation of ammonia\u2013hydrogen binary fuel IDTs while maintaining the underlying kinetic information.<\/jats:p>","DOI":"10.1021\/acs.jpca.6c03732","type":"journal-article","created":{"date-parts":[[2026,10,13]],"date-time":"2026-10-13T16:02:08Z","timestamp":1791907328000},"page":"8444-8449","source":"Crossref","is-referenced-by-count":0,"title":["An Explicit Analytical\nTheory for Ignition Delay Time\nPrediction of Ammonia\/Hydrogen Binary Carbon-Neutral Fuel"],"prefix":"10.1021","volume":"130","author":[{"given":"Jingqi","family":"Hu","sequence":"first","affiliation":[{"name":"Tsinghua University , , ,","place":["Beijing, China, 100084"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8086-1155","authenticated-orcid":true,"given":"Wenkai","family":"Liang","sequence":"additional","affiliation":[{"name":"Tsinghua University , , ,","place":["Beijing, China, 100084"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2026,10,13]]},"reference":[{"key":"2026102208063851900_cit1","doi-asserted-by":"publisher","first-page":"1906","DOI":"10.1016\/j.rser.2017.06.001","article-title":"Carbon emission\nof global construction sector","volume":"81","author":"Huang","year":"2018","journal-title":"Renewable Sustainable\nEnergy Rev."},{"issue":"7565","key":"2026102208063851900_cit2","doi-asserted-by":"publisher","first-page":"335","DOI":"10.1038\/nature14677","article-title":"Reduced carbon\nemission estimates from fossil fuel combustion and cement production\nin China","volume":"524","author":"Liu","year":"2015","journal-title":"Nature"},{"issue":"4","key":"2026102208063851900_cit3","doi-asserted-by":"publisher","first-page":"217","DOI":"10.1038\/s43017-022-00285-w","article-title":"Monitoring\nglobal carbon emissions in 2021","volume":"3","author":"Liu","year":"2022","journal-title":"Nat. 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