Rare earth oxide based electrocatalysts: synthesis, properties and applications

Jiang, Yong; Fu, Hao; Liang, Zhong; Zhang, Qian; Du, Yaping

doi:10.1039/d3cs00708a

Cited by 14 publications

(3 citation statements)

References 356 publications

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“…3,9 Therefore, to establish cost-effective electrolysis systems, developing highly active electrocatalysts with reduced noble metal loadings is imperative, such as the alloy structure strategy recently reported in studies. 10,11 In the realm of water splitting, optimizing the interplay between electrocatalysts and electrolytes remains pivotal to enhancing overall catalytic activity. 12,13 While significant breakthroughs have propelled innovations in acidic and alkaline electrolytes, understanding of the water-splitting in neutral to near-neutral electrolytes remains comparatively nascent.…”

Section: Introductionmentioning

confidence: 99%

Universal pH electrocatalytic hydrogen evolution with Au-based high entropy alloys

Jeong,

Branco,

Bollen

et al. 2024

Nanoscale

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Section: Introductionmentioning

confidence: 99%

Universal pH electrocatalytic hydrogen evolution with Au-based high entropy alloys

Jeong,

Branco,

Bollen

et al. 2024

Nanoscale

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“…The results confirm that the introduction of RE enriches the electron distribution near the Fermi level (E F ) and provides a fast d-f electron ladder for the electron transfer of adsorbed species, which indicates that the constructed RE 4f orbital ladder can regulate the adsorption of reaction intermediates. 35 Gong and co-authors promoted the formation of CH 4 from electrochemical CO 2 RR over an oxophilic La 5 Cu 95 alloy by electrostatically depositing in a gas diffusion layer. The introduction of La not only reduces the energy barrier of hydrogenation of *CO to *CH x O by strengthening the M−O bond but also achieves high selectivity for CO 2 RR.…”

Section: Introductionmentioning

confidence: 99%

“…Du et al realized the regulation and utilization of 4f electrons of RE elements by constructing the electron/ion transport interface of copper/ultrathin cerium oxide/iron chromium nickel hydroxide (Cu@CeO 2 @NFC). The results confirm that the introduction of RE enriches the electron distribution near the Fermi level ( E F ) and provides a fast d-f electron ladder for the electron transfer of adsorbed species, which indicates that the constructed RE 4f orbital ladder can regulate the adsorption of reaction intermediates . Gong and co-authors promoted the formation of CH 4 from electrochemical CO 2 RR over an oxophilic La 5 Cu 95 alloy by electrostatically depositing in a gas diffusion layer.…”

Section: Introductionmentioning

confidence: 99%

Stimulating Electron Delocalization of Lanthanide Elements through High-Entropy Confinement to Promote Electrocatalytic Water Splitting

Jiang,

Liang,

Liu

et al. 2024

ACS Nano

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High-entropy alloys (HEAs) have aroused extensive attention in the field of catalysis. However, due to the integration of multiple active sites in HEA, it exhibits excessive adsorption behavior resulting in difficult desorption of active species from the catalyst surfaces, which hinders the catalytic efficiency. Therefore, adjusting the adsorption strength of the active site in HEA to enhance the catalytic activity is of great importance. By introducing rareearth (RE) elements into the high-entropy alloy, the delocalization of 4f electrons can be achieved through the interaction between the multimetal active site and RE, which benefits to regulate the adsorption strength of the HEA surface. Herein, the RE Ce-modified hexagonal-close-packed PtRuFeCoNiZn-Ce/C HEAs are synthesized and showed an excellent electrocatalytic activity for hydrogen evolution reaction and oxygen evolution reaction with ultralow overpotentials of 4, 7 and 156, 132 mV, respectively, to reach 10 mA cm −2 in 0.5 M H 2 SO 4 and 1.0 M KOH solutions, and the assembled water electrolysis cell only requires a voltage of 1.43 V to reach 10 mA cm −2 , which is much better than the performance of PtRuFeCoNiZn/C. Combined with the results of in situ attenuated total reflection infrared spectroscopy and density functional theory (DFT), the fundamental reasons for the improvement of catalyst activity come from two aspects: (i) local lattice distortion of HEA caused by the introduction of RE with large atomic radius induces 4f orbital electron delocalization of RE elements and enhances electron exchange between RE and active sites. (ii) The electronegativity difference between the RE element and the active site forms a surface dipole in HEA, which optimizes the adsorption of the active intermediate by the HEA surface site. This study provides an insightful idea for the rational design of high-performance HEA-and RE-based electrocatalysts.

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Rare Earth‐Induced CoO₆ Octahedral Distortion in Perovskite: An Efficient Catalytic Platform for RuO₂‐Catalyzed Water Oxidation

Jiang,

Liang

et al. 2024

Adv Funct Materials

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Rare earth (RE)‐based perovskites are considered as promising platform for oxygen evolution reaction (OER) due to their low cost and tunable structures. However, the systematic synthesis of perovskite catalysts with satisfactory performance has rarely been reported. Herein, a general synthetic protocol for RE‐substituted LaCoO3 (RE‐LCO) perovskites is demonstrated. Particularly, after loaded with RuO2, the as‐prepared RuO2:0.2Ce‐LCO hybrid structures exhibit OER performance with a low overpotential of 135 mV at 10 mA cm−2 in 1.0 m KOH, together with remarkable long‐term operation, representing one of the most efficient and robust Ru‐based catalysts. Comprehensive experimental results indicate that the enhanced OER mechanism is attributed to the Ce‐substitution, which alters the geometric configuration of CoO6 octahedra and generates more oxygen vacancies. Furthermore, the robust interaction between Ce‐LCO and RuO2 stabilizes the valence state of Ru site. Theoretical calculations corroborate that Co 3d orbitals overlap with Ce 4f orbitals near the Fermi level, greatly improving the electron transfer between Co and Ce atoms.

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Rare earth oxide based electrocatalysts: synthesis, properties and applications

Abstract: The synthesis, properties and applications of rare earth oxide based electrocatalysts in electrocatalysis reactions.

Cited by 14 publications

References 356 publications

Universal pH electrocatalytic hydrogen evolution with Au-based high entropy alloys

Universal pH electrocatalytic hydrogen evolution with Au-based high entropy alloys

Stimulating Electron Delocalization of Lanthanide Elements through High-Entropy Confinement to Promote Electrocatalytic Water Splitting

Rare Earth‐Induced CoO₆ Octahedral Distortion in Perovskite: An Efficient Catalytic Platform for RuO₂‐Catalyzed Water Oxidation

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Rare earth oxide based electrocatalysts: synthesis, properties and applications

Abstract: The synthesis, properties and applications of rare earth oxide based electrocatalysts in electrocatalysis reactions.

Cited by 14 publications

References 356 publications

Universal pH electrocatalytic hydrogen evolution with Au-based high entropy alloys

Universal pH electrocatalytic hydrogen evolution with Au-based high entropy alloys

Stimulating Electron Delocalization of Lanthanide Elements through High-Entropy Confinement to Promote Electrocatalytic Water Splitting

Rare Earth‐Induced CoO6 Octahedral Distortion in Perovskite: An Efficient Catalytic Platform for RuO2‐Catalyzed Water Oxidation

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Rare Earth‐Induced CoO₆ Octahedral Distortion in Perovskite: An Efficient Catalytic Platform for RuO₂‐Catalyzed Water Oxidation