Cation Migration-Induced Lattice Oxygen Oxidation in Spinel Oxide for Superior Oxygen Evolution Reaction,Angewandte Chemie International Edition

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Cation Migration-Induced Lattice Oxygen Oxidation in Spinel Oxide for Superior Oxygen Evolution Reaction
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2024-11-10 , DOI: 10.1002/anie.202416757
Mahmoud G Ahmed ₁ , Ying Fan Tay ₂ , Xiao Chi ₃ , Ahmed S Razeen ₄ , Yanan Fang ₁ , Mengyuan Zhang ₁ , Anqi Sng ₅ , Sing Yang Chiam ₅ , Andrivo Rusydi ₃ , Lydia H Wong _{1,

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Affiliation

Spinel oxide, Fe_0.3Co_0.9Cr_1.8O₄ with active lattice oxygen is developed by high-throughput methods. The lattice oxygen activation is facilitated by Cr oxidation (Cr³⁺→Cr⁶⁺), accompanied by cation migration from octahedral to tetrahedral sites. This geometric conversion generates oxygen non-bonding states essential for lattice oxygen oxidation. Oxidized oxygen species are stabilized through dimerization with CrO₄ tetrahedra (d⁰ Cr⁶⁺). The oxide demonstrates high activity and stability at high current densities.

中文翻译：

尖晶石氧化物中阳离子迁移诱导的晶格氧氧化用于卓越的析氧反应

具有活性晶格氧的尖晶石氧化物，Fe_0.3Co_0.9Cr_1.8O₄ 是通过高通量方法开发的。晶格氧活化由 Cr 氧化（Cr³⁺→Cr⁶⁺）促进，并伴有阳离子从八面体到四面体位点的迁移。这种几何转换产生了晶格氧氧化所必需的氧非键合态。氧化氧通过与 CrO₄ 四面体（d⁰ Cr⁶⁺）的二聚化来稳定。氧化物在高电流密度下表现出高活性和稳定性。

更新日期：2024-11-10

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