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. 2021 Apr 20;12:2348. doi: 10.1038/s41467-021-22527-z

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© The Author(s) 2021

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 6 — a XRD patterns based on Ni²⁺/Ru⁵⁺ combination, showing layered-rocksalt intergrown structure. The designed layered-rocksalt samples Li_7/6Ni_4/9Ru_7/18O₂, Li_5/4Ni_1/3Ru_5/12O₂, and Li_4/3Ni_2/9Ru_4/9O₂ are labeled as LR1, LR2, and LR3, respectively. b XRD patterns based on varied oxidation states of Ni/Ru, where Ni²⁺/Ru⁴⁺ in Li_1.2Ni_0.2Ru_0.6O₂ and Ni³⁺/Ru⁵⁺ in Li_1.2Ni_0.6Ru_0.2O₂ lead to layered structure vs. layered-rocksalt intergrown structure for Ni²⁺/Ru⁵⁺ in Li_1.2Ni_0.4Ru_0.4O₂. Critical reflections are indexed as (hkl)_L and (hkl)_R for R $\bar{3}$ m and Fm $\bar{3}$ m, respectively.