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          <dc:title>Code and data for "Two competing ageing channels of lithium iron phosphate cathodesntitled Item</dc:title>
          <dc:creator>Wei Ning (24863974)</dc:creator>
          <dc:subject>Energy generation, conversion and storage (excl. chemical and electrical)</dc:subject>
          <dc:subject>lithium iron phosphate</dc:subject>
          <dc:subject>battery ageing</dc:subject>
          <dc:subject>graph neural network</dc:subject>
          <dc:subject>percolation</dc:subject>
          <dc:subject>lifetime prediction</dc:subject>
          <dc:description>&lt;p dir="ltr"&gt;Supplementary code and data for the manuscript "Two competing ageing&lt;/p&gt;&lt;p dir="ltr"&gt;channels of lithium iron phosphate cathodes" (submitted to Nature&lt;/p&gt;&lt;p dir="ltr"&gt;Communications). The code implements the electrode microstructure&lt;/p&gt;&lt;p dir="ltr"&gt;reconstruction, the coupled two-channel degradation simulator (interphase&lt;/p&gt;&lt;p dir="ltr"&gt;growth + contact-fatigue percolation), the physics-guided graph-transformer&lt;/p&gt;&lt;p dir="ltr"&gt;network, and the Severson et al. external-validation pipeline. The data&lt;/p&gt;&lt;p dir="ltr"&gt;archive contains the numeric values of the scaling relations, the per-model&lt;/p&gt;&lt;p dir="ltr"&gt;metrics and distribution-shift results, the Severson validation results, and&lt;/p&gt;&lt;p dir="ltr"&gt;the per-figure source data (CSV) that reproduce Figures 1-7 and Supplementary&lt;/p&gt;&lt;p dir="ltr"&gt;Fig. 1. Random seeds are fixed throughout for reproducibility.&lt;/p&gt;</dc:description>
          <dc:date>2026-09-13T18:07:00Z</dc:date>
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