Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/154701
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dc.contributor.authorSun, Lanen_US
dc.contributor.authorDai, Zhengfeien_US
dc.contributor.authorZhong, Lixiangen_US
dc.contributor.authorZhao, Yiweien_US
dc.contributor.authorCheng, Yanen_US
dc.contributor.authorChong, Shaokunen_US
dc.contributor.authorChen, Guanjunen_US
dc.contributor.authorYan, Chunshuangen_US
dc.contributor.authorZhang, Xiaoyuen_US
dc.contributor.authorTan, Huitengen_US
dc.contributor.authorZhang, Longen_US
dc.contributor.authorDinh, Khang Ngocen_US
dc.contributor.authorLi, Shuzhouen_US
dc.contributor.authorMa, Feien_US
dc.contributor.authorYan, Qingyuen_US
dc.date.accessioned2022-01-05T07:53:31Z-
dc.date.available2022-01-05T07:53:31Z-
dc.date.issued2021-
dc.identifier.citationSun, L., Dai, Z., Zhong, L., Zhao, Y., Cheng, Y., Chong, S., Chen, G., Yan, C., Zhang, X., Tan, H., Zhang, L., Dinh, K. N., Li, S., Ma, F. & Yan, Q. (2021). Lattice strain and atomic replacement of CoO₆ octahedra in layered sodium cobalt oxide for boosted water oxidation electrocatalysis. Applied Catalysis B: Environmental, 297, 120477-. https://dx.doi.org/10.1016/j.apcatb.2021.120477en_US
dc.identifier.issn0926-3373en_US
dc.identifier.urihttps://hdl.handle.net/10356/154701-
dc.description.abstractLayered alkali metal oxides have been emerged as an alternative group with low-cost and promising electrocatalysts in water oxidation. The distinct layered configuration may offer some interesting possibilities to tune the intrinsic activity by regulating the intralayer edge-shared CoO6 octahedra and the CoO2 interlayer spacing/strain. In this work, electrochemical desodiation tuning method is explored on intralayer Ag, Cu, Ce-doped Na0.7CoO2 for highly active OER catalysts. It is demonstrated that the ΔGOH* value in the volcano plot is optimized by proper desodiation. Meanwhile, the lattice strain introduced along with the desodiated process modulates the ΔGOH*, according to first principle calculations. It shows that ~0.157% compressive strain in the CoO2 layers and ~1% tensile strain between CoO2 layers are introduced in the desodiated Ag doped Na0.7CoO2. Among these catalysts, the desodiated Ag-Na0.7CoO2 sample exhibits an optimal RuO2-beyond water oxidation (OER) activity with the lowest overpotential of 236 mV@10 mA/cm2, the smallest Tafel slope of 48 mV/dec and the highest mass current density of 227.8 A/g. This work provides an interesting avenues to optimize existing layered materials with inter/intralayer modifications for highly efficient water oxidation electrolysis.en_US
dc.description.sponsorshipMinistry of Education (MOE)en_US
dc.description.sponsorshipNational Research Foundation (NRF)en_US
dc.language.isoenen_US
dc.relation2017-T2-2-069en_US
dc.relation2018-T2-01-010en_US
dc.relationNRF2016NRF-NRFI001-22en_US
dc.relation.ispartofApplied Catalysis B: Environmentalen_US
dc.rights© 2021 Elsevier B.V. All rights reserved. This paper was published in Applied Catalysis B: Environmental and is made available with permission of Elsevier B.V.en_US
dc.subjectEngineering::Materials::Energy materialsen_US
dc.titleLattice strain and atomic replacement of CoO₆ octahedra in layered sodium cobalt oxide for boosted water oxidation electrocatalysisen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Materials Science and Engineeringen_US
dc.identifier.doi10.1016/j.apcatb.2021.120477-
dc.description.versionAccepted versionen_US
dc.identifier.volume297en_US
dc.identifier.spage120477en_US
dc.subject.keywordsDesodiation Processen_US
dc.subject.keywordsCoO₆ Octahedraen_US
dc.description.acknowledgementThis work was supported by National Natural Science Foundation of China (Grant No. 51771144 and 51802252), Singapore MOE AcRF Tier 2 Grant (Nos. 2017-T2-2-069 and 2018-T2-01-010), and National Research Foundation of Singapore (NRF) Investigatorship (NRF2016NRF-NRFI001-22), the Natural Science Foundation of Shaanxi Province (Nos. 2019TD-020, 2020JM-032, 2020JQ-386, 2019JLM-30 and 2017JZ015), Outstanding Youth Project of Shaanxi Province (No. 2021JC-06) and Natural Science Foundation of Jiangsu Province (BK20180237). This research used the resources of the HPCC platform in Xi’an Jiaotong University.en_US
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