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. 2024 Aug 27;15:7387. doi: 10.1038/s41467-024-51479-3

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Fig. 6 — Binding energies for hydrogen in superconducting layered nickelates, where a positive (negative) binding energy indicates favoring (disfavoring) H-intercalation. Crystal structures indicate the positions of topotatic-H used for (top) (La,Nd)NiO₂, (bottom) (La,Nd)_0.75(Sr,Ca)_0.25NiO₂, and (right) Nd₆Ni₅O₁₂. Solid lines are guides to the eye connecting related materials with the same parent phase e.g., LaNiO₂ and the associated doped compounds.