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Table · dataset · 2026

FP-DeErr DFT-NEB reference: 154 Li- and Na-ion migration pathways

Listed in HKU DataHub and figshare and Loughborough Research Repository — shown once because both records carry DOI 10.6084/m9.figshare.33332610.v2

<pre>Density-functional-theory nudged-elastic-band (DFT-NEB) reference calculations for 154 Li- and Na-ion migration pathways, used as the ion-migration benchmark in FP-DeErr.

Description

The pathways span 106 structurally distinct materials and a range of chemistries including oxides (32.1%), sulfides (20.8%), halides and multi-anion compounds.<br><br>Each pathway carries seven finalized DFT-NEB images (1,078 images in total), with the total energy and per-atom forces for every image, plus the unrelaxed source endpoint structures used as the starting geometry for foundation-potential NEB calculations.<br><br>Structurally distinct materials were identified by matching the DFT-NEB endpoint structures with pymatgen's StructureMatcher at its default tolerances (ltol = 0.2, stol = 0.3, angle_tol = 5), with primitive-cell reduction and volume scaling enabled.

Two source entries are treated as the same material when any of their endpoint structures match, which requires no choice of representative structure; the count is unchanged whether the DFT-relaxed initial, DFT-relaxed final, or unrelaxed source endpoints are used.<br><br>Note on sum_formula: this field preserves the nominal composition reported for the source entry and may contain partially occupied or minor dopant species that are absent from the modeled DFT structure.

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Nine pathways are affected. The deposited structure fields define the actual compositions used in the calculations and should be used for any composition-based analysis.<br><br>The migration pathways were selected from the high-throughput ion-migration dataset of Saravanan et al., available at doi.org/10.6084/m9.figshare.32221506 and licensed CC BY 4.0. The DFT-NEB reference calculations were performed in this work and are released in this record.<br><br>DFT was performed with VASP using the PAW approach and the PBE functional, largely following the Materials Project input set: an energy cutoff of 520 eV, Gaussian smearing with a width of 0.05 eV, and spin polarization, with Hubbard U corrections applied where applicable using the Materials

Project

U values and the Dudarev scheme. Endpoints were relaxed at fixed cell shape and volume, five images were interpolated between them, and the NEB used a force convergence criterion of 0.05 eV/Å. These settings are also recorded in the file's dft_calculation_metadata block.<br><br>SHA-256 of the gzip file: 7f73b8d3b1f8167c67393f35bf1eebeb5dce87f831a2377cfc1af74f1ce3012e<br>SHA-256 after decompression: 7d48d1b75033dedc013ec7b31bd9cc94604f7bbf3eb5528a8a87b6ebadac7a2c<br>The accompanying README documents the full JSON schema.

Analysis and generation code: github.com/mogroupumd/FP-DeErr . Leaderboard: mogroupumd.github.io/FP-DeErr/<br></pre><p></p>

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Provenance · 3 source records, 42 field assertions
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HKU DataHuboai:figshare.com:article/333326105 d agoJSON v1
figshareoai:figshare.com:article/333326105 d agoJSON v1
Loughborough Research Repositoryoai:figshare.com:article/333326104 d agoJSON v1
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